When light travels a far distance from its source, it becomes more dispersed and weaker due to absorption, scattering, and divergence. The intensity of the light decreases as it spreads out, leading to dimmer illumination and reduced visibility.
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Light travels approximately 186,282 miles (299,792 kilometers) in one second.
100 light years is the distance that light travels in 100 years, which is about 588 trillion miles.
40 light years is the distance that light travels in 40 years, which is about 235 trillion miles.
When light rays are divergent, it means they are spreading outwards in different directions from a single point of origin. This happens when the light source is far from the object being illuminated, causing the rays to diverge as they travel towards the object.
The intensity of light that reaches the eye is related to the amount of light seen. This can be influenced by factors such as distance from the light source, obstructions in the light path, and the light source's brightness. The eye's sensitivity to light also plays a role in how much light is perceived.