2006-12-22 06:12:20 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Astronomy & Space
As tiny 'particles' of energy called photons.
These are like tennis balls that are always shot at the same speed (that of light).
2006-12-22 06:19:44 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Light has a wave/particle duality. This means it has properties of both particles and waves. It's generally thought that light travels like a wave but unlike most waves, it propegates through no medium...rather it's it's own medium. It interacts with matter like a particle. This is why the photoelectric effect occures.
2006-12-22 07:46:49 · answer #2 · answered by minuteblue 6 · 0⤊ 0⤋
Light travels in straight lines.
In a vacuum it always travels at 299,792,458 meters per second, exactly. In other mediums (such as water or air) it will go slower.
Note that Gravity bends space - and light, traveling in a 'straight line' will follow the curvature of the 'bent' space (see http://en.wikipedia.org/wiki/Gravitational_lensing )
2006-12-22 07:27:14 · answer #3 · answered by Steve B 7 · 0⤊ 0⤋
ytmdtmft
2006-12-22 06:26:16 · answer #4 · answered by <>< 2 · 0⤊ 3⤋