What Is the De Broglie Equation

In 1924, Louis de Broglie presented his research thesis, in which he proposed electrons have properties of both waves and particles, like light. He rearranged the terms of the Plank-Einstein relation to apply to all types of matter. de Broglie Equation Definition The de Broglie equation is an equation used to describe the wave properties of matter, specifically, the wave nature of the electron:​Î » h/mv,where ÃŽ » is wavelength, h is Plancks constant, m is the mass of a particle, moving at a velocity v.de Broglie suggested that particles can exhibit properties of waves. The de Broglie hypothesis was verified when matter waves were observed in George Paget Thomsons cathode ray diffraction experiment and the Davisson-Germer experiment, which specifically applied to electrons. Since then, the de Broglie equation has been shown to apply to elementary particles, neutral atoms, and molecules.

HIV TB Essay - 5081 Words

Human Immunodeficiency Virus (HIV) and Tuberculosis (TB) Instructions Meet the Client: Jeff Smith Thirty-two-year-old Jeff Smith is admitted from his healthcare providers office to the acute care facility. Jeff was diagnosed HIV positive 2 years ago. His history includes fatigue, a productive cough, and weight loss. A tuberculosis (TB) skin test was administered in the healthcare providers office. Admission prescriptions include isolation precautions for possible tuberculosis. Admission Procedure The nurse welcomes Jeff to a private room at the end of the hall. According to hospital protocol, the nurse puts on a mask before starting the admission process. Jeff tells the nurse that his partner is downstairs and that he would like his†¦show more content†¦A) A mask is required for healthcare workers entering the room of someone suspected of having active TB. CORRECT TB is spread by airborne transmission of droplet nuclei. A well fitting, high-efficiency particulate air (HEPA) mask is necessary to filter the mycobacterium tuberculosis bacillus. B) Wearing a mask, gown, and gloves is required for healthcare workers entering Jeff’s room for any reason. INCORRECT The only protective apparel required when entering the room is a HEPA mask. C) The UAP will only be in the room for a brief moment to deliver the tray, so no intervention is needed by the nurse. INCORRECT Since TB is spread by airborne transmission of droplet nuclei, a HEPA mask is necessary for the UAP to wear. The nurse needs to inform the UAP of this and ensure that appropriate PPE is worn in Jeff’s room. D) Non-sterile gloves are necessary to deliver the meal and prevent the spread of TB. INCORRECT Gloves do not prevent the transmission of an airborne organism. Specimen Collection An acid-fast bacilli (AFB) stain is part of the initial admission prescriptions. Early morning sputum specimens will be collected for 3 consecutive days and sent to the lab. 5. Which task(s) may the nurse delegate to the UAP? (Select all that apply.) A) Tell Jeff that the specimen must be collected in the early morning. CORRECT This task may be delegated. B) Provide Jeff with 3 sterile specimen cups at his bedside. CORRECT This task may be delegated. C) TeachShow MoreRelatedTuberculosis : Hiv And Tb1301 Words   |  6 Pageswith HIV. A report by CDC (2015) states that in 2014 a third of the world was infected by the disease, 9.6 million people around the world were diagnosed with TB disease with 1.5 million deaths worldwide. Definition TB is a contagious and often severe airborne disease caused by infection with  Mycobacterium tuberculosis  (Mtb) bacteria. TB typically affects the lungs, but it also can affect any other organ of the body, (tuberculosis,2015). Tb can be classified as either latent or active. 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Which learning style the teachers should use to teach language Free Essays

Knowing pupils manner is really of import. That because it helps pupils to be active scholars. This survey purpose is to hold a deep expression in pupils ‘ manner in ADU and which manner they prefer much. We will write a custom essay sample on Which learning style the teachers should use to teach language or any similar topic only for you Order Now Besides, which larning manner the instructors should utilize to learn linguistic communication and is at that place a different between the three manners of larning. Study was conducted in 20 respondents from Abu Dhabi University. The perusing of consequences indicated that pupils prefer to utilize ocular manner much more than others manner. Introduction Learners have different manners, attitudes, behaviours, ideas, and positions. Everyone acts harmonizing to his ain character. Besides, every scholar has his ain manner to stand for or derive information. There are three manners that scholars use to derive information ; they are ocular, audile and tactile. Learners have different ways to derive information, some scholars prefer to analyze entirely and others prefer to analyze in groups. Otherwise, instructors need to be familiar with pupils ‘ manners because cognizing pupils ‘ manners will do occupation of the instructor more comfy. Besides, it will raise the pupils ‘ public presentation inside the category room. Statement of job Which manner is the best 1 for ADU pupils? Statement of intent Determine pupils ‘ manners and happen suited ways to do pupils derive information easy and profit from their teachers. 2 Leaning manners definition Everyone has his ain manner to show or get informations. Learning manners can be defined as several attacks or ways of acquisition. Besides, it can be described as an single behaviour, activities and qualities that appear on the scholar character when procedure of acquisition is happening. Actually, it is a sort of techniques that enables the scholar to larn in a best manner. ( Wikipedia, 2009 ) Peoples have different manners of thought and different ways of stand foring information. The word manner is used in linguistic communication to depict differences between people. Style can be described as single qualities, activities and behaviour that appear on the scholar character during larning procedure. Style has a major influence in different parts on human character such as personality, behaviour, knowledge, perceptual experience, larning and motive. I think that the scholar himself can determine his ain manner. For illustration, if the scholar has a weak personality ; he will non pull off to show his thoughts and take part with the other scholars. However, if the scholar has a strong personality ; he will be successful in his acquisition trip. Students with strong personality show high attending to linguistic communication. ( Robert, 2000 ) When I move to the college, I see different sorts of pupils ; they are from India, Egypt, Sudan, Syria, Oman etc. Each one has his ain manners ; some of them like to analyze in groups and other like to analyze entirely. Otherwise ; larning manners can be different from individual to individual. Types of acquisition manners In this life, there are a batch of differences ; people have different attitudes, behaviour, intelligence and different manners. In larning, we have different types of acquisition manners. There are three types of acquisition manners, ocular, audile, and tactile or kinaesthetic. Ocular manner Learners who use this sort of manner ; they normally learn information or information through seeing things. They prefer teacher who uses the chalkboard or the projector to 3 present the chief points or the one who gives an lineation about the talk. Besides, they prefer to analyze entirely by themselves in a quite room. These scholars frequently see information in their heads when they are seeking to retrieve something. Besides, they need to see the organic structure linguistic communication of the instructor and follow facial looks. In add-on, they prefer to put at the forepart of the category and avoid obstructors ( e.g. pupils head ) . Al thought, these scholars tend to utilize images more and depend on ocular show such as diagrams, picture, chart, and press release. Besides, these scholars use their ain imaginativeness to show their feeling like picture and other humanistic disciplines. In add-on, to be able to get information ; they draw symbols and images on cards to remember information when they need it. Besides, they use colour pens to foreground chief thoughts. Furthermore, ocular scholars use diagrams and graphs to ease callback. ( Suzanne, 2000 ) Auditory manner Learners who use this type of manner ; they normally depend on hearing to get information. They learn best through listening to others, treatment, and verbal talks. Auditory scholars realize or gain significance of address through listening to tone of voice, pitch and velocity of the talker. Sometimes written information may hold small intending if they hear it. Besides, these scholars may get or profit from reading texts aloud and utilizing tape recording equipment. In add-on, audile scholars prefer to take part and interact with other scholars ; they normally pay more attending for the talker whether the instructor or a spouse. When analyzing, seek to happen for yourself an stray room where you wo n’t trouble oneselfing anyone and read your notes or text edition aloud. Besides, you can utilize tape recording equipment to enter your talks. Al though, holding talks on a tape record enable you to fix for tests in a nice and easy manner. ( Shannon, 2006-2010 ) Tactile or kinaesthetic manner Tactile scholars learn information or information if they are physically engaged. These scholars learn best by following the teacher motion inside the schoolroom. Tactile learners seem more active to follow the instructor organic structure linguistic communication. Besides, these scholars seem more active in they classroom, they set at the forepart seats and they take note 4 without taking attention to grammatical errors. When analyzing, set at the forepart seats and take notes without taking attention of grammatical errors or composing uncomplete sentences. Besides you can pull images or charts to assist you retrieve information. ( corina,1999-2010 ) Taxonomy of acquisition manners Learners use different ways to larn about any topic. Harmonizing to several psychologists, there are seven specific types of acquisition manners. In instruction, instructors should find type of scholars that they have and select the best manner which suite their scholars demands. Linguistic: in this type, the scholars prefer to read, compose and state narratives. They show a high degree of memorising topographic points, informations, and names, and are ever surprising you in their ways of happening the information. Besides, they have a strong ability to remember information you have told them, word by word. These pupils learn best through visual perception, stating and hearing. Otherwise teacher should courage them to be more originative by assisting them to compose down words, phrases and promoting them to portion their thoughts with other spouses. ( Stacy, 2001 ) Logical: scholars are obsessed of mathematical jobs. They like to work out jobs particularly if they are related to math. These pupils develop logical thought. Their chief issues are how things work, why things relate to one another and why things are here. This type of pupils learn best by analysing, differentiate and happening relationships between things. ( Stacy, 2001 ) Teacher should courage and assist them by demoing them how to happen relationships between things. For illustration, what is the consequence of pollution? Some pupils may happen that it has a negative consequence on human being wellness and other may state it has a negative consequence on animate beings etc. By demoing them how to happen relationships between things ; they will catch linguistic communication and they will be originative. Spatial: these are the imaginers. They spend their clip in woolgathering, watching others and remaining off from existent life. This type of pupils likes to work with colourss, images and usage head oculus. 5 If you feel that they are less motivated, you can inquire them to pull a image and so inquire them to speak about it. You will recognize that they are more take parting with you, because image for them is everything. Teacher should courage their artistic abilities and allows them to show their feels, ideas, and thoughts by demoing them how to make that. ( Stacy, 2001 ) Musical: if you notice that you have a pupil, who likes to sing all the clip, so this pupil is a musical scholar. This type of scholar love everything relates to music, they prefer to hear music while walking, analyzing and eating etc†¦ Besides, this type of scholars is good in detecting pitches, beat, and inside informations. ( Stacy, 2001 ) As I said before, they like to larn best through beat so teacher should accommodate his method of learning with their manner. For illustration, while reading any transition, he can set a vocal for them. This type of pupils needs the instructor to utilize techniques which are related to music. For illustration, to trip their memories, he can inquire them to compose a vocal about the lesson. However, music should non be devouring clip talk or that will convey bad effects. Bodily: this type of scholars depends on organic structure to catch the linguistic communication. They like to walk around the category, analyze everything and they use body linguistic communication to show their thoughts, ideas and feelings. They prefer to play any sort of athletics instead than sit down and read a book. ( Stacy, 2001 ) Teacher should maintain them active all the clip by playing with them word games, have spelling lesson during football. Besides, he can take them to nature to larn about geographics. Interpersonal: we can depict these scholars as a group of custodies that work together to finish a given undertaking. These scholars have ability to run in any societal state of affairs. They are more tended to hold a batch of friends and conveying them place. Besides, they prefer to work in group inside the category room and have unlimited patient for the others. ( Stacy, 2001 ) Teachers should courage their love for people and assist them to be with different types of people. However, parents should follow them carefully because they may 6 face people that have different civilizations, attitudes, behaviours and thoughts. And conflict civilizations may do some jobs for these scholars. Intrapersonal: are those pupils who prefer to work entirely and like rather topographic points to analyze in. They prefer to work on their ain involvement and normally they have a deeper apprehension for themselves. Besides, intrapersonal scholars tend to remain a manner from groups and wish do their best entirely. Teachers should follow them and support because they may perpetrate errors in any clip. ( Stacy, 2001 ) Kolb acquisition manner Kolb divided procedure of tilting into four stairss ; the first procedure is cyclical procedure. It begins with concrete experience ; the whole procedure is based on experience. The 2nd measure is brooding observation, seeing experience from different positions. The 3rd measure is abstract conceptualisation, planing generalisations that submergence observations into sound theories. The concluding 1 is active experimentation where scholar uses these generalisations as theories to prove new state of affairss. Kolb believes that larning procedure is based through experiment. He says that the whole acquisition procedure consist of four phases: experiencing, reflecting, believing and moving. The scholar receives information and attempts to prove every individual portion. Then, think about the information and eventually seek to move on the information. ( scott,2000 ) Literature reappraisal Several surveies have been conducted on groups of kids. These kids groups include Native American, Alaskan Eskimo and Mexican- American kids. Surveies showed that certain groups have strong ocular perceptual experience in comparing to auditory, tactile or kinaesthetic manners. ( Swanson, 1995 ) Another survey was conducted on kids from different civilizations to find their acquisition manners ; these kids are from African- American, Mexican- American and Greek- American. Study showed that Grecian American kids like to utilize audile manner and both African American and Mexican- American kids like to utilize haptic manner. ( Swanson, 1995 ) 7 Methodology: In this undertaking I made questionnaire, in order to cognize sentiments ‘ of pupils and about my inquiries or jobs. Then, I distributed those inquiries on 20 pupils from Abu Dhabi University ; they are taking different classs such as Muslim civilization, professional moralss and others. Their ages are from 18 to twenty six. After that, I collected them and started to analyse them. Finally, I compare between informations which I found in articles and informations in inquiries. Finding consequences As you know my research negotiations about the three types of acquisition manners which are ocular, audile and haptic. I am certain that now you are known about these three types and what are the significances of these types. Some pupils have their ain manners to larn. They may concentrate on ocular instead than auditory which I observed on my study. Other pupils have abilities to larn by audile manner instead than ocular manner when they learn. Some pupils get these types and they use ocular, audile and haptic to larn better. They normally like to alter their manners of larning. They use all these three types to larn better and do learning procedure more utile and apprehensible. I distributed study for 15 male and 5 female pupils in ADU. This study includes 15 inquiries that let me cognize their acquisition manners. These inquiries have four picks and each pupils select one or two. Before I collected their replies to analysis, I noticed that most of pupils in ADU use ocular manners of acquisition. This chart clarifies the consequence that I collected from my study 8 From this chart, you can see that larning manners of pupils at ADU divide into three types of larning manners as followers: Ocular manner: Auditory manner: Haptic manner: First, most of pupils at ADU use ocular manners of larning. I collected 181 points that 16 pupils selected from the different picks. In ocular manner, when pupils spell the word, they try to see it. When they talk, they dislike listening for long clip because they feel board. So they like to see images, waies, postings, diagrams etc to cognize thoughts, topographic points, etc. Besides, when they meet person once more, they merely retrieve faces instead than names. I found most of pupils at ADU like to larn through visual perception, pulling, utilizing graphs, and reading written direction that came with the plan. In add-on, they like to larn from books that has real-life narratives, experiences and illustrations. Besides, these pupils like to seek in web sites that have interesting written descriptions, lists, accounts, design and ocular characteristics. When they do something new at work, they like to see presentations, slides, or postings. Second, some pupils use audile manner to larn at ADU. I collected 86 points that 4 pupils selected. These pupils like to hold feedback from person who talks it through with them if they have finished a competition or trial and would wish some feedback. Besides, they would speak about, or set up a talk for them about for illustration, 9 Parkss or wildlife militias, when a group of tourers want to larn about the Parkss in their countries. In add-on, if the pupils want to larn a new plan, accomplishment or game on a computing machine, they would speak with people who know about the plan. These pupils prefer a instructor or a presenter who uses inquiry and reply, talk, group treatment, or guest talkers. Besides, if they are utilizing a book, Cadmium or web site to larn how to take exposures with your new digital camera, they would wish to hold a opportunity to inquire inquiries and speak about the camera and its characteristics. In add-on, they like web sites that have audio channels where I can hear music, wireless plans or interviews. When pupils do something new, they prefer verbal instructions or speaking about it with person else. Third, the survey shows that most pupils do non utilize haptic manner to larn at ADU. I did non roll up any point for this manner ; this shows that pupils do non like to seek or touch things that would assist them to larn. These pupils do non like to utilize the controls or keyboard when they want to larn a new plan, accomplishment or game on a computing machine. Besides, if they find person who want to travel to airport, town centre or railroad station ; they do non wish to travel with him. In add-on, if they have a job with their articulatio genus ; they would non prefer that the physician usage a fictile theoretical account of a articulatio genus to demo what was incorrect. In add-on, the ground of disfavor tactile manner is non known. There are several grounds that show why pupils do non like haptic manner in ADU ; one of the chief grounds is their ages. Adults do non like to play or touch things because they show a polite character. Besides, clip can deter pupils to utilize tactile ; as we know grownups do non hold clip for these little issues. Table of the consequences: Types of acquisition manners. ocular Auditory Tactile Number of pupils 16 4 0 Percentage 84.2 % 15.8 % 0 % 10 Discussion The pervious surveies showed that pupils prefer to utilize ocular manner. Otherwise, do we hold to concentrate on ocular manner more? Each manner has its ain features ; we can non divide the three manners. Other surveies showed that larning manners are different from one civilization to another. Otherwise, these differences are natural but we can give some tips to raise pupils ‘ public presentation. I think we have to do a balance between the three manners. We should do the pupils love to utilize the other two manners by demoing them tips and bids. Decision Learning manner is the manner of thought of a individual to derive information from environing. Each scholar has its ain manner to derive information. There are three types of larning manner ocular, audile and haptic. In ocular acquisition manner a scholar learns through sing the graph, notes, diagram, and image to derive information. In audile learning manner a scholar learns through listening to other people. Last in haptic larning manner a scholar learns through touching things. The survey shows that most of the scholars use ocular acquisition manner to derive information, nevertheless we can non divide the other two acquisition manners because the three acquisition manners are related to each other. In decision, I would wish to state that all the three acquisition manner are of import for larning procedure, instructor or teacher should cognize every single scholar manner. Recommendations Teachers Provide online study for the pupils, in order to cognize pupils larning manners Design activities to promote the usage of auditory and tactile manners Supply one talk at least in every class for pupils to give them tips for analyzing 11 Course of study interior decorators Design course of studies with more focal point to images, graphs, diagrams etc†¦ Design course of studies that focus on ocular, audile and haptic manners Students Design box suggestions Design postings which show the importance of larning manners. Corporate with teachers to find acquisition manners 12 How to cite Which learning style the teachers should use to teach language, Essay examples

International students consume alcohol Essay Example

International students consume alcohol Essay Restatement of the research objective The research focuses on drawing a comparative analysis between Australian and the international students drinking habits. Overall, the data shows that overseas and Australian students consumption of alcohol is quite different. As this research shows, on average both international male and female students consume alcohol at least once a month. On the other hand, the Australian students drink alcohol mainly two days a week. In addition, beer is the conceivably the most common drink among the international students while brand choice is evidently differentiated among the Australian students. The majority of Australian female students consume bottled wine while their colleague males predominantly drink beer irrespective of their alcoholic strengths. We will write a custom essay sample on International students consume alcohol specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on International students consume alcohol specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on International students consume alcohol specifically for you FOR ONLY $16.38 $13.9/page Hire Writer Research findings From the data obtained in this study, the first finding is that that alcohol is definitely the highest indulgence drug among both Australian and the international students. Beers and spirits account for the highest proportion of alcohol used by the international students while higher incidences of bottled spirit use and beer drinking is reported among Australian female and male students respectively. Most male international students drink at least twice a week while international female students only drink occasionally. Conversely, a greater proportion of the Australian students drink mainly two days a week. One probable reason for higher incidences of alcohol use among male than female students is the contemporary youth mentality that associates drug use with masculinity. Moreover, the society assigns females the role of caregivers hence they embrace sobriety early enough in their life. The second finding of this research is that taste of drink highly influences the brand relished by the international students than it is the case with Australian students. While both the male and female the international students exhibit an almost equal liking for beer, the Australian male students are common drinkers of wine while females relish bottled wine. Therefore, it .means that beer has the most favorable taste than all the other drinks that the international students choose from. On the other hand, there is a marked difference between the drinking of alcohol among international and the Australian students. The probability that psychological attunement of the females towards details such as taste and brands is higher than that of the males. Therefore, males would only consider a few factors before settling on a brand of choice as opposed to the females. While disposable income among the Australian students is the most important determinant of their respective drinking habits, taste is the most significant determinant of the brand choices among the international students. Due to the differential prices of various types of wine, its use among the Australian students is the most segmented with lower income students less predisposed to drinking cask wine than the medium to high income ones. Price only has an overreaching influence on the brand choices of the international female students. The most plausible reason for the influence of pricing in the Australian students choice of alcohol brand is their limited income. However, overseas students mainly come from affluent backgrounds thus are able tis sustain their alcoholic lifestyles devoid of price limitations. This research determines that a larger proportion of female international student drinkers consume alcohol at least once a week, at least once a month and less than once a month as compared with their male counterparts whose drinking habit is not dependent on time factors. The international male students drink alcohol at least twice a week is higher than female. These findings indicate the high levels of caution that female international students employ to prevent binge drinking or becoming alcohol addicts. Drinking of beer among the Australian male drinkers is differentiated into cohorts with decipherable differences in brand choices between baby boomers, generation X and generation Y. While age is not a determinant in the international students brand choices, it is significant among Australian drinkers with baby boomers males drinking more spirits that beer. Among the international male and female students, beer is universally extensively drunk than any other brand irrespective if the drinkers age. The choice to drink only occasionally reflects the resilience of both the international and Australian female students to the effects of group pressure compared to their male counterparts. In addition, the higher rates of drinking among both overseas and Australian male students can be attributed to the fact that males are more susceptible to group influence, especially with respect to drug use than the females are. Limitations and recommendation of the study The research does not provide personalized information that influence differential alcohol use among the international male and female students respectively as it does for the Australian. Factors such as societal expectations and resistance to peer pressure among female students would be rather compelling assertions of the research. Therefore, future research should focus on the social factors that influence the differentiated drinking trends between Australian and overseas students.

15 Rain Quotes to Drench Your Heart in Pure Joy

15 Rain Quotes to Drench Your Heart in Pure Joy Rain makes the whole landscape look fresh, green, and glistening. While people huddle under their umbrellas, trying to get to work, the child inside wants to throw away their rain gear and enjoy the pinpricks of raindrops on their face and the puddles that follow. Water is the elixir of life, and those of us lucky enough to enjoy regular rain may not recognize how remarkable it really is. Rain is the source of our food, the only liquid we use to stay clean and healthy, and very possibly the reason life evolved on Earth. Its also the source of wonderful songs such as  Singing in the Rain, Umbrella, Raindrops Keep Falling on My Head  and so many others. Next time the drops start to fall, soak yourself in the pure, unadulterated drizzle and let your worries wash away. Hum a tune as you walk in the rain, and feel your spirit soar. Share these rain quotes with your friends and help the rain god cast a spell of magic. Rain Quotes From Famous People Henry Wadsworth Longfellow A feeling of sadness and longing that is not akin to pain, and resembles sorrow only as the mist resembles the rain. Bill Rodgers I ran my fastest marathon in the rain. Saint Basil Many a man curses the rain that falls upon his head, and knows not that it brings abundance to drive away the hunger.   Halle Berry Id like to be able to use Storms powers for good, like have it rain more in Southern California. We could do with it. David Copperfield Im just waiting for people to start asking me to make the rain disappear. Clint Eastwood If you think its going to rain, it will. Langston Hughes Let the rain kiss you. Let the rain beat upon your head with silver liquid drops. Let the rain sing you a lullaby. Dave Barry It always rains on tents. Rainstorms will travel thousands of miles, against prevailing winds for the opportunity to rain on a tent. William Shakespeare For the rain it raineth every day. Satchel Paige Dont pray when it rains if you dont pray when the sun shines. Roger Miller Some people walk in the rain, others just get wet. Henry Ward Beecher Rain! whose soft architectural hands have power to cut stones, and chisel to shapes of grandeur the very mountains. Rachel Carson A rainy day is the perfect time for a walk in the woods. Mark Twain It is best to read the weather forecast before praying for rain. Rabindranath Tagore Clouds come floating into my life, no longer to carry rain or usher storm, but to add color to my sunset sky. John Updike Rain is grace; rain is the sky descending to the earth; without rain, there would be no life. Munshi Premchand Trees bear fruits only to be eaten by others; the fields grow  grains, but they are consumed by the world. Cows give milk, but she doesnt drink it herself - that is left to others. Clouds send rain only to quench the parched earth. In such giving, there is little space for selfishness.

Biography of Carl Sagan, Astronomer of the People

Biography of Carl Sagan, Astronomer of the People Astronomer and author Carl Sagan (November 9, 1934 - December 20, 1996) burst into public consciousness as the star and producer of the TV series Cosmos. He was a prolific researcher in astronomy  as well as a science popularizer who sought to educate the public about the universe and the value of the scientific method.   Early Years Born in Brooklyn, New York, Sagan grew up with a strong interest in the planets, stars, and science fiction. His father, Samuel Sagan, immigrated from what is now Ukraine and worked as a garment worker. His mother, Rachel Molly Gruber, encouraged his great interest in science. Sagan often cited his parents influence on his career, saying that his father influenced his imagination and his mother urged him to go to the library to find books about stars. Professional Life After graduating from high school in 1951, the young Sagan headed the University of Chicago for a degree in physics. At the University of Chicago, he took part in chemistry research about the building blocks of life. He went on to earn a Ph.D. in astronomy and astrophysics in 1960. Sagan left Illinois and began working at University of California - Berkeley, where he worked with a team to  build an instrument for a NASA mission to Mars called Mariner 2. In the 1960s, Sagan moved to Harvard University, where he worked at the Smithsonian Astrophysical Observatory. There, he focused his research more closely on planetary science, with a particular interest in Venus and Jupiter. Sagan later moved again to Cornell University, where he served as director of the Laboratory for Planetary Studies. Sagans work with NASA continued. He was a principal advisor for the Viking missions and worked on the landing site selection. He also was instrumental in a project to put messages from humanity aboard the Pioneer and Voyager probes to the outer solar system. In 1976, he became  the David Duncan Professor of Astronomy and Space Sciences, a chair he held until his death. Research Interests and Activism Throughout his career, Carl Sagan remained deeply interested in the possibility of life on other worlds.   Throughout his work with NASA and the U.S. space program, he tirelessly promoted the ideas behind the search for extraterrestrial intelligence, colloquially known as SETI. Sagan worked on  several collaborative experiments, which ultimately demonstrated that, when exposed to ultraviolet light, mixtures of amino acids and nucleic acids could be produced in  conditions much like those of early Earth. Carl Sagan conducted early research on climate change. One of his studies showed that the high temperatures on the surface of Venus could be attributed to a runaway greenhouse effect. Throughout his career, Sagan continued his scientific research, ultimately publishing more than 600 papers. Throughout his work, he advocated for scientific skepticism and healthy reasoning, promoting skepticism as an alternative to belief systems of politics and religion. Sagan was also  an anti-war activist. He  studied the potential impact of nuclear war and advocated for nuclear disarmament. Science as a Way of Thinking As an avid skeptic and agnostic, Sagan promoted the scientific method as a tool for better understanding the world. In his book  Demon-Haunted World, he laid out strategies for critical thinking, deconstructing arguments, and testing claims. Sagan published a number of other science books aimed at a lay audience, including The Dragons of Eden: Speculations on the Evolution of Human Intelligence, and Brocas Brain: Reflections on the Romance of Science.  Ã‚  Ã‚   In 1980, Carl Sagans:  Cosmos: A Personal Voyage premiered on television.  The premiere turned Sagan into a well-known science popularizer. The show was aimed at a general audience, with each  episode  focusing on a different aspect of scientific discovery or exploration.  Cosmos  received two Emmy Awards.   Later Years and Legacy In the 1990s, Carl Sagan was diagnosed with a blood condition called myelodysplasia. He received three bone marrow transplants and ongoing treatment, continuing to work on his research and writing even as the condition worsened. At age 62, Sagan died of pneumonia associated with his condition. Sagan left a long-lasting legacy in the fields of astronomy and science education. Several awards for science communication are named after Carl Sagan, included two given by the Planetary Society. The Mars Pathfinder location on Mars is named the Carl Sagan Memorial Station.   Carl Sagan Fast Facts Full Name: Carl Edward SaganKnown For: Astronomer, author, and science popularizer  Born: November 9, 1934 in Brooklyn, New York, USADied: December 20, 1996 in Seattle, Washington, USAEducation: University of Chicago (B.A., B.S., M.S., Ph.D.)Selected Works:  Cosmos: A Personal Journey,  Demon-Haunted World,  The Dragons of Eden,  Brocas BrainKey Accomplishments:  NASA Medal of Honor (1977), Emmy Award for Outstanding Personal Achievement (1981), authored 600 scientific papers and dozens of popular science articles and books.Spouse Name:  Lynn Margulis (1957-1965), Linda Salzman (1968-1981),  Ann Druyan (1981-1996)Childrens Names: Jeremy, Dorion, Nick, Alexandra, Samuel  Famous Quote: Extraordinary claims require extraordinary evidence. Sources and Further Reading Kragh, Helge. â€Å"Carl Sagan.† Encyclopà ¦dia Britannica, Encyclopà ¦dia Britannica, Inc., 27 Oct. 2017, www.britannica.com/biography/Carl-Sagan.  Head, Tom. Conversations with Carl Sagan (Literary Conversations), University Press of MIssissippi, 2006.  Terzian, Yervant, and Elizabeth Bilson. Carl Sagans Universe. Cambridge University Press, 2009.

Summary Essay Example | Topics and Well Written Essays - 500 words - 56

Summary - Essay Example He argued that population cannot grow rapidly due to several forces that hinder growth such as war, famine and various diseases. Additionally, he pointed out that most people control birth rates, while others engage in marriage at old ages. Disease, war and famine raise the death rates leading to the decrease of population while low birth rate and late marriages discourages population growth. According to Malthus population does not require to run out of food supply due to late marriages and birth control. He further explains that if these practices were not practiced, population would rapidly grow. Malthus claims that food is mainly necessary to support life thus encouraging population growth. He also explains that earth cannot produce food on its in great quantities unless labor and skills are exercised upon the earth’s surface. Malthus explained that God is capable of rising up plants of all kinds for his creation’s use without the assistance of labor or man’s attention. Â  Land preparation activities such as ploughing, and clearing of the land, sowing of seeds and other practices done by man for production are mainly necessary for enjoyment of life’s blessings. The practices arouse man in action and ensure that he reasons appropriately. Furthermore, Malthus claimed that due to the excitement of the blessing of life, and ability of man to provide food through cultivation of the earth, rapid population growth is being witnessed than food increase. According to the principle of population, man is considered slow, sluggish, inert and reluctant from labor. Generally, Malthus tries to enlighten people that population cannot increase exponentially due to low rates of food supply. He therefore elaborates that checks on population growth in most societies are preventive and others are positive. The positive checks raise death rates while preventive checks decrease population increase by lowering birth