Refraction

Convex Lens & Concave Lens

Real image and virtual image Looking at an object, we feel there is an object in it. By the way, if you feel that there is something, we say there is an ‘image’, even if there is no real object…
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Principle of least time (Fermat’s principle)

Prism

The speed of light is about 300,000km/s. Light travels fastest in vacuum. As light passes through the material, the speed decreases slightly depending on the material. The speed of light reduction depends on the type or density of the material.…
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Rainbow by Raindrops

A rainbow is a natural phenomenon where the dispersion of light is most visible. As you know, a rainbow can be seen after it rains because the water droplets bend and disperse the light. For example, if we spray water…
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Camera

Seeing the Light

Rainbow Formation

A rainbow is a natural phenomenon where the dispersion of light is most visible. As you know, a rainbow can be seen after it rains because the water droplets bend and disperse the light. For example, if we spray water…
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Correction of Near-sightedness & Far-sightedness

Light Refraction

You can drag the path of light. Refraction is the bending of a wave caused by a change in its speed as it moves from one medium to another. This occurs because of the slow speed of light in dense…
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Refraction on water

Refraction is the bending of a wave caused by a change in its speed as it moves from one medium to another. This occurs because of the slow speed of light in dense materials. Examples of phenomena caused by refraction…
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