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Saturated and Unsaturated Vapour Pressure

Saturated and Unsaturated Vapour Pressure What is a saturated solution? If in a water sugar solution, the amount of dissolved sugar is equal to the maximum amount that a given amount of water can dissolve at a certain temperature, then that solution is called a saturated solution. What is an unsaturated solution? If in a water sugar solution, the amount of dissolved sugar is less than that amount that a given amount of water can dissolve at a certain temperature, then that solution is called a saturated solution. What is saturated vapour? At a certain temperature in an enclosed space, if the amount of vapour present is equal to the maximum vapour capacity of that space, then that vapour is called saturated vapour. What is unsaturated vapour? At a certain temperature in an enclosed space, if the amount of vapour present is less than the maximum vapour capacity of that space, then that vapour is called unsaturated vapour. What is vapour pressure? Vapour enclosed in a container behaves

Nature of Light

Light is an electromagnetic radiation. Although light is only a tiny part
of the electromagnetic spectrum, it has been the subject of much
research both in physics and in biology. The importance of light is due
to its fundamental role in living systems. The sun is still the major
source of light in the world. The sun is both beneficial and hazardous
to our health.

The three general categories of light ultra-violet (UV), visible and
infrared (IR). They are defined in terms of their wavelengths.
Ultraviolet light has wave lengths from about 1000 to 4000 A0; visible
light extends from about 4000 to 7000 A0 and IR light extends form
about 7000 to 100000 A0.

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