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Light (knowledge (Light travels at a speed of about 300,000 km/s, Light is…
Light
knowledge
- Light travels at a speed of about 300,000 km/s
- Light is a type of electromagnetic energy.
- Lumen is the international(SI) unit of luminous flux, a measure of overall light emitted by a light source.
- In 1905, Einstein proposed the concept of
time and space in terms of time and space varying according to the observer. He
proposed the concept of "constant velocity
of light" as a special relativity theory that all light travels at a speed of 300,000 km per hour in vacuum time and space.
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