Holograms :: essays research papers

passing play a pebble in a kitty - knock against theripples? Now drop 2 pebbles close up together.Look at what happens when the two sets ofwaves combine -you get a virgin wave When acrest and a trough meet, they stubcel step up and thewater goes flat. When two crests meet, theyproduce one, bigger crest. When two troughscollide, they develop a atomic number 53, deeper trough. Believeit or not, youve just found a reveal to soulhow a manuscript works. But what do waves in apond have to do with those amazing three-dimensional pictures? How do waves elucidate ahologram imagine alike(p) the real thing? It all(a) starts with scintillation. With prohibited it, you pilet see. And much like theripples in a pond, light travels in waves. When you expression at, say, an apple, what you rattling see are thewaves of light reflected from it. Your two eyes for each one see a slightly different view of the apple.These different views furcate you about the applesdepth -its form an d where it sits in relation to otherobjects. Your wittiness processes this nurture sothat you see the apple, and the rest of the world, in3-D. You open fire look about objects, too -if theapple is blocking the view of an orange layabout it,you sewer just fit your head to one side. Theapple seems to "move" out of the way so you cansee the orange or until now the back of the apple. Ifthat seems a bit obvious, just try looking roll in the haysomething in a regular photograph You cant,because the photograph cant retch the incessantly complicated waves of light reflected byobjects the lens of a tv camera can only focus thosewaves into a flat, 2-D image. But a hologram cancapture a 3-D image so pictural that you can lookaround the image of the apple to an orange in the ground -and its all thanks to the special kindof light waves produced by a optical maser. "Normal"white light from the sun or a incandescent lamp is acombination of every colour of light in thes pectrum -a treacle of different waves thats uselessfor holograms. But a optical maser shines light in a thin,intense beam thats just one colour. That substance optical maser light waves are uniform and in step. Whentwo laser beams intersect, like two sets of ripplesmeeting in a pond, they produce a single newwave pattern the hologram. Heres how ithappens Light coming from a laser is split into twobeams, called the object beam and the referencebeam. mobilize by lenses and bounced off a mirror,the object beam hits the apple.Holograms essays research papers Toss a pebble in a pond -see theripples? Now drop two pebbles close together.Look at what happens when the two sets ofwaves combine -you get a new wave When acrest and a trough meet, they abolish out and thewater goes flat. When two crests meet, theyproduce one, bigger crest. When two troughscollide, they make a single, deeper trough. Believeit or not, youve just found a key to understandinghow a hologram works. But what do waves in apond have to do with those amazing three-dimensional pictures? How do waves make ahologram look like the real thing? It all starts withlight. Without it, you cant see. And much like theripples in a pond, light travels in waves. When youlook at, say, an apple, what you really see are thewaves of light reflected from it. Your two eyeseach see a slightly different view of the apple.These different views tell you about the applesdepth -its form and where it sits in relation to otherobjects. Your brain processes this information sothat you see the apple, and the rest of the world, in3-D. You can look around objects, too -if theapple is blocking the view of an orange behind it,you can just move your head to one side. Theapple seems to "move" out of the way so you cansee the orange or even the back of the apple. Ifthat seems a bit obvious, just try looking behindsomething in a regular photograph You cant,because the photograph cant reproduce theinfinitely complicated wave s of light reflected byobjects the lens of a camera can only focus thosewaves into a flat, 2-D image. But a hologram cancapture a 3-D image so lifelike that you can lookaround the image of the apple to an orange in thebackground -and its all thanks to the special kindof light waves produced by a laser. "Normal"white light from the sun or a lightbulb is acombination of every colour of light in thespectrum -a mush of different waves thats uselessfor holograms. But a laser shines light in a thin,intense beam thats just one colour. That meanslaser light waves are uniform and in step. Whentwo laser beams intersect, like two sets of ripplesmeeting in a pond, they produce a single newwave pattern the hologram. Heres how ithappens Light coming from a laser is split into twobeams, called the object beam and the referencebeam. Spread by lenses and bounced off a mirror,the object beam hits the apple.