Ultraviolet Light
Physics / Thermodynamics
Ultraviolet light is a form of radiation which is not visible to the human eye. It's in an invisible part of the 'electromagnetic spectrum'. Radiated energy, or radiation, is given off by many objects continue reading this fact
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X-Rays - Another Form of Light
Physics / Fundamentals
A new form of radiation was discovered in 1895 by Wilhelm Roentgen, a German physicist. He called it X-radiation to denote its unknown nature. This mysterious radiation had the ability to pass through continue reading this fact
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How Fast is Mach 1?
Physics / Fundamentals
A Mach number is a common ratio unit of speed when one is talking about aircrafts. By definition, the Mach number is a ratio of the speed of a body (aircraft) to the speed of sound in the undisturbed continue reading this fact
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