Eyes are organs that detect light, and convert it to electro-chemical impulses in neurons. The simplest photoreceptors in conscious vision connect light to movement. In higher organisms the eye is a complex optical system which collects light from the surrounding environment; regulates its intensity through a diaphragm; focuses it through an adjustable assembly of lenses to form an image; converts this image into a set of electrical signals; and transmits these signals to the brain, through complex neural pathways that connect the eye, via the optic nerve, to the visual cortex and other areas of the brain. Eyes with resolving power have come in ten fundamentally different…show more content… This is based upon the shared anatomical and genetic features of all eyes; that is, all modern eyes, varied as they are, have their origins in a proto-eye believed to have evolved some 540 million years ago.[11][12][13] The majority of the advancements in early eyes are believed to have taken only a few million years to develop, since the first predator to gain true imaging would have touched off an "arms race".[14] Prey animals and competing predators alike would be at a distinct disadvantage without such capabilities and would be less likely to survive and reproduce. Hence multiple eye types and subtypes developed in parallel. Eyes in various animals show adaption to their requirements. For example, birds of prey have much greater visual acuity than humans, and some can see ultraviolet light. The different forms of eye in, for example, vertebrates and mollusks are often cited as examples of parallel evolution, despite their distant common ancestry. The very earliest "eyes", called eyespots, were simple patches of photoreceptor protein in unicellular animals. In multicellular beings, multicellular eyespots evolved, physically similar to the receptor patches for taste and smell. These eyespots could only sense ambient brightness: they could distinguish light and dark,
Related Documents: Explaining The Optial Eye Of A Human Eye
Multivariable Calculus Project #2 This assignment uses the website www.WolframAlpha.com as a tool to help you solve some problems in multivariable calculus. You should be familiar with the site from the previous project. Note: You do not need to sign up for Wolfram "Pro" or create an account to use the site for this assignment. If you are prompted to create an account, look for the link to continue using the free version. Solve the following problems: Plotting surfaces. In the last project, you graphed…
erkgnelrkgb ejgnbjerbjrekgnbgbdfkjgbn ebggbtb tgbghThroughout this catapult project, I was assisted by my mom. To start, I looked up various catapult images online to get a good idea of how to construct it and what materials would be best. After looking at numerous catapults, I combined the idea of using PVC material from some images, and the actual physical set up from others to help me design it. By knowing from physics class that the highest and farthest an object would go if catapulted is if…
Engineering and Physics Rochester Chuck.michael@gmail.com-507-536-7379 Engineering Project Chuck described his engineering field as being an imaginer. He imagines things that don’t yet exist and makes them happen. He creates the vision, develops the strategy, finds the money, finds the engineers, designers, planners and attorneys. His current job title is that he owns a consulting engineering firm where he is the project manager for the High Speed Passenger Rail Project. He is also the…
physicist through time, but few are remembered as well as Albert Einstein. His discoveries in the field of physics changed the way humans perceived the world. He contributed by producing several theories related to physics, helping create the atomic bomb, and by opening the minds of a whole generation, through his imaginative thinking. In 1905 Einstein produced his first major breakthrough in physics. He stated that if an object is traveling at a constant speed then the object would experience normal…
sparked his interest in physics while he was still in school. His father was a physiologist; his mother came from a family distinguished in the field of education. Professor Bohr got married in 1912,to Margrethe Nørlund. They had six sons. Two of them died. The others made distinguished careers in various professions - Hans Henrik (M.D.), Erik (chemical engineer), Aage (Ph.D., theoretical physicist, following his father as Director of the Institute for Theoretical Physics), Ernest (lawyer).…
contributions to the field is tremendous and he is considered by many the father of modern physics. Not only was he a brilliant man in science, but also a great mind when it comes to inspiration. There are numerous rumors about Albert Einstein, one is that he struggled with mathematics in school, a rumor that seems to be incorrect due to his excellent grades and the fact that he taught both mathematics and physic. Albert was born in Germany in a non-religious Jewish family, however, in 1896 he resigned…
out now that I am older. A project during elementary school that helped me understand something a lot better was about circuits. Even though I still don’t quite get how it works anymore, I know a simpler version of it. Now that I’m thinking about it I do get what the main points about the project were and of how they work. That project, science fair project, was able to get me 1st place in the science fair. I now know a lot more about circuits because of my AP Physics class. If not for my prior experiences…
which is essentially the only justification for money spent to the big science project. I believe that the main task of this story - it's popularization for usual people of elementary particle physics as a science. When I been at the Institute, I studied physics of elementary particles, so most of the terms I was know. The first thing that impresses - scale. Especially the number of people who worked on this project and dimension of the collider. 27 kilometers of scientific equipment: sensors…
science, but he also studied Greek, Latin, French, and German. He graduated in 1921. His early education was at the Ethical Culture School in New York. Oppenheimer attended Harvard University for his undergraduate studies. Besides doing very well in physics and chemistry, he continued to study different languages in hope that it would benefit him one day. He got his PhD in Germany after graduating from Harvard in 1925. In 1929 he came back to the United States and his positions at Berkeley and Cal Tech…
strangled the holy curiosity of inquiry; for what this delicate little plant needs more than anything, besides stimulation, is freedom." - Einstein Albert graduated from the Swiss Federal Institute of Technology in 1900 as a secondary math and physics teacher. He obtained his Ph.D. from University of Zurich. He later became professor at the Kaiser-Wilhelm Gesellschaft in Berlin. Scientific Works The 1905 papers: Three seminal papers researched and written by Einstein. The first concerning…