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The light from a torch spreads out as it travels away from the source due to the inverse square law, which states that the intensity of light decreases with the square of the distance from the source. As you hold the torch farther away, the light covers a larger area, making the illuminated circle appear bigger. Additionally, the angle of divergence increases, contributing to the perception of a larger beam. This phenomenon is a result of how light propagates through space.

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1mo ago

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Is your shadow bigger when your nearer to the light or further away?

Your shadow appears smaller when you are nearer to the light source and larger when you are further away. This is because the closer you are to the light source, the more direct and concentrated the light is, resulting in a sharper shadow with less dispersion. Conversely, the further away you are, the light is more spread out, causing your shadow to appear larger.


Why does the shadow get bigger as the torch moves closer and smaller as the torch moves away?

The size of a shadow depends on the distance between the light source, the object casting the shadow, and the surface on which the shadow falls. When the torch moves closer to the object, the light spreads out over a smaller area, causing the shadow to appear larger. Conversely, as the torch moves farther away, the light converges over a larger area, resulting in a smaller shadow. This phenomenon is a result of the geometry of light rays and their interaction with the object.


Would light weaken the further away it was from its source?

No light is composed of massless particles called "photons", the reason some lights such as torches, seem to weaken the further they get from the torch, is because the light from a torch is not as focused as the light from a laser beam, the photons that make up the light, simply spread out over greater distances. Photons themselves do not weaken, they will travel until they reach an object they cannot pass through.


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