2007-11-22 19:54:35 · 11 answers · asked by krisha n 1 in Science & Mathematics ➔ Physics
Light is an electromagnetic radiation of wavelength that are visible to human eyes. Light radiates from its source in all directions until it is absorbed or diverted by some substances.
Hope this helps.
2007-11-22 20:02:43 · answer #1 · answered by Mathavan M 2 · 0⤊ 0⤋
Light Travels In Straight Lines
2007-11-22 19:59:04 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Light has properties of both particles and waves. If we think of light as being made of particles, we call those particles photons. They have momentum and carry energy in discrete bundles, which is what makes them particle-like. On the other hand, light also undergoes refraction, diffraction, and reflection, which are distinctly wave-like properties. So, light has a dual nature.
When light travels, it travels as an electromagnetic wave. An electromagnetic wave consists of an oscillating electric field and an oscillating magnetic field. As it turns out, the electric field and magnetic field that oscillate as a photon passes do so at 90º angles to each other, and also at 90º to the direction of propagation.
When light passes through a transparent medium, it propagates more slowly than it does through a vacuum. This is because the light is being absorbed and re-emitted by the atoms that make up the material. This adds time to its trip. It also causes the path of the light to bend. This is called refraction, and it is the principle behind how lenses work.
I hope this helps!
2007-11-22 20:03:35 · answer #3 · answered by Lucas C 7 · 0⤊ 0⤋
Light is a wave phenomenon, just like waves on water. However, where most waves require a medidium to vibrate in, light does not.
Faraday proposed around 1850 that light was an electromagnetic vibration, that is oscillation magnetic and electric fields. These can propagate without a medium. 20th century Quantum Mechanics theory has added the notion of wave–particle duality for light. More generally, this theory states that everything has both a particle nature and a wave nature, and various experiments can be done to bring out one or the other.
2007-11-22 20:15:55 · answer #4 · answered by ronwizfr 7 · 0⤊ 0⤋
Light travels in waves, minute particals, some which can travels through other substances that are waving as well, light cannot travel through concrete, but can travel through a curtain, where some particals get through and some don't. So the light is lesser through the curtain. Light needs to travel in waves to find it's way and navigate through more solid substances
2007-11-22 20:08:59 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Light travel with the help of Micro and Nano particles in the Air. Hence the medium of travel for light is air or different gases present in atmosphere
2007-11-22 20:00:01 · answer #6 · answered by chetansunnypatil 3 · 0⤊ 2⤋
LIGHT TRAVELS IN A STRAIGHT LINE.IN AIR IT TRAVELS AT 3OO MILLION METRES PER SECOND AND IN GLASS 200 MILLION METRES PER SECOND.
2007-11-22 22:42:27 · answer #7 · answered by Anonymous · 0⤊ 0⤋
it travels at 3x10^8 ms^-2
2007-11-22 20:43:27 · answer #8 · answered by Anonymous · 1⤊ 1⤋
as a particle and a wave.
2007-11-22 19:59:02 · answer #9 · answered by Alex 6 · 0⤊ 0⤋
Fast.
2007-11-22 19:58:32 · answer #10 · answered by So Cal Homie 2 · 2⤊ 2⤋