What is Fiber Optics?

The baby in the picture hasn't been born yet. It is still lying inside its mother's womb.How could a photograph like this have been taken? The photograph was taken using…

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How fast is the Speed of Light?

Nothing we know of can travel faster than light. An object traveling at the speed of light can travel around the world about seven and a half times in one second.The…

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What are Convex and Concave lenses?

Lenses are used in cameras, telescopes, and other instruments to refract and to focus rays of light.Lenses used as eyeglasses help people with poor eyesight to see better.Most lenses are…

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What is a Mirage?

When light passes from one substance to another, it may also change direction.When light rays pass from air to water or from water to air, they bend as they pass…

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What is Refraction?

When light passes from one substance to another, it may also change direction.When light rays pass from air to water or from water to air, they bend as they pass…

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What are Infrared Rays?

We cannot see infrared rays, but we can feel them as heat. It is the infrared rays in sunlight that help to make us feel warm when we stand in the…

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What are Ultraviolet Rays?

Light is a type of energy that can travel through space.The energy of light is called radiant energy. There are many different kinds of radiant energy but we can see only…

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What is color spectrum?

The colors of the rainbow are red, orange, yellow, green, blue, and violet.But these are not the only colors in the rainbow.If you look carefully at a rainbow, you can…

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What are the colors of the Rainbow?

What is a Rainbow? Next time you see a rainbow in the sky, look carefully at its colors. On the outside of the rainbow you will see red, and on the…

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