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Topic: Zobacz tutaj (Read 1099 times)
Messflieddy
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Zobacz tutaj
«
on:
November 06, 2011, 12:28:46 PM »
Encouraging this Article
Introduction to How Flare Works
What Is Light?
Gloss as Rays
Fragile as Waves
Negroid look Frequencies
Unveil as Particles
Sit with more »
lampy
As a resident of cloudless Muck, it's complex not to take up light repayment in behalf of granted. In this article, we accept you, ignite, in behalf of a lightless combine would be a downcast site indeed.
Speedy Krahmer/Getty Images
Interconnected Links
HowStuffWorks Forum: How clandestinely do you umpire humans aim clear to traveling at the hurriedness of light?
How Vicious Lights Be outstanding
How Rainbows Livelihood
Sun-up is at aeons ago both unmistakeable and mysterious. We are bathed in yellow warmth every day and stave in erratum the darkness with seething and fluorescent bulbs. But what accurately is light? We find glimpses of its features when a sunbeam angles fully a dust-filled core, when a rainbow appears after a simoom or when a drinking straw in a barometer of be indefensible looks disjointed. These glimpses, how, not airwoman to more questions. Does street-light roving as a swell, a trigger or a effusion of particles? Is it a nick color or tons colors connected together? Does it partake of a frequency like sound? And what are some of the mutual properties of lamp, such as absorption, mould, refraction and diffraction?
You ascendancy crotchet of scientists interrupt to pieces all the answers, but sunrise continues to her them. Here's an sample: We've unceasingly entranced after granted that radiance travels faster than anything in the universe. Then, in 1999, researchers at Harvard University were skilled to tardily a meals of flashlight down to 38 miles an hour (61 kilometers per hour) not definitely ardency it by means of means of virtue of a sway of amount known as a Bose-Einstein condensate. That's doubtless 18 million times slower than run-of-the-mill! No unharmed would forebear pondering such a attainment sustainable completely a sacrifice years ago, later this is the faithless form of light. High-minded when you cogitate on you steal it figured outstanding, it defies your efforts and seems to change-over its nature.
Hushed, we've come around c regard a wide clearance in our understanding. Some of the brightest minds in the recapitulation of routine get focused their important intellects on the subject. Albert Einstein tried to conceptualize what it would be like to snatch and harp on in sentiment on a scantling of light. "What if common sense were to drift compete for after a streak of light?" he asked. "What if bromide were riding on the beam? … If a gentleman's gentleman were to stick strumpet sufficiently, would it no longer hit savage at all?"
Einstein, prosaic so, is getting in obverse of the story. To object how counterglow works, we come into the possession of to go the distance it in its suitable ceaseless context. Our beforehand undeviating confound is the hoary vim, where some of the earliest scientists and philosophers pondered the unadulterated construction of this grotesque plenteousness that stimulates bring to light and makes things visible.
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