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Albert Einstein
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The speed of light: 3x108 ms-1 |
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Albert Einstein |
A very honorable and reputed scientist, most well-known for his formula: E=mc2. Nobel prize winner for the photon theory in the photoelectric effect. |
| Frame of Reference | From the scientific point of view, this is like an "observation point" with respect to whom we make our measurements and calculations. There can be two basic types of frames of reference: inertial, i.e. those which are either at rest (ok, in relativity, there's no such thing as absolute rest, but still, for simplicity) or moving with a uniform velocity; and non-inertial: which are undergoing acceleration of some kind. (acceleration here means any kind of CHANGE in velocity, be it speed/direction, not just speeding-up, as the literal meaning goes) |
| Lorentz factor | |
| Photon | Ok, for this first you've to accept that everything in this world has two aspects: the particle aspect, the wave aspect. Light, as you obviously know, has wave nature (it is an electromagnetic wave after all), but it also has particle nature. It travels in small packets of energy called photons. This is one of the simplest phenomena regarding quantization. Now for that, refer to an encyclopedia or a science text book! |