Light(nehru Garden)

LIGHT WHAT IS LIGHT Light, form of energy visible to the human eye that is radiated by moving charged particle.

SOURCES OF LIGHT  

Natural sources (THE SUN) Artificial sources (BULB,LAMPS etc.)

FREQUENCY OF LIGHT •Light waves also come in many frequencies. The frequency is the number of waves that pass a point in space during any time interval, usually one second. It is measured in units of waves per second, or Hertz (Hz).

MEASURING THE LIGHT 

The size of a wave is measured as its wavelength which is the distance between any two corresponding points on successive waves, usually peak-to-peak or trough-to-trough

SPEED OF LIGHT 

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Light not only vibrates at different frequencies, it also travels at different speeds Light waves slow down when they travel inside substances, such as air, water, glass or a diamond.

LIGHT WHEN ENCOUNTER AN OBJECT Four different things can happen when light hits an object: The waves can be reflected or scattered off the object. The waves can be absorbed by the object. The waves can be refracted through the object. The waves can pass through the object with no effect.