- #1
nilesh_pat
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Why we do not see a touch light from a distance of 1 km.
thanks
nilesh
thanks
nilesh
Vanadium 50 said:Touch light? Trouch light? I don't understand what you are talking about.
If you mean "torch light", as in "flashlight", the answer is "we do".
Drakkith said:The light travels until it is absorbed by something. At great distances the light has either spread out so much or enough has been absorbed that the intensity is too low to detect it with your eyes.
In a torch, light travels through a process called incandescence. This means that an electric current is passed through a filament, causing it to heat up and emit visible light.
A torch light beam is visible due to the light reflecting off of particles in the air, such as dust or water droplets. This is why the beam is more visible in a dark or smoky environment.
Yes, the material of a torch can affect the quality and intensity of the light beam. For example, a flashlight with a reflective interior will produce a brighter beam compared to one with a non-reflective interior.
Yes, light can travel in a vacuum. In fact, light travels fastest in a vacuum compared to any other medium. This is why we see light from stars and the sun, even though there is no air in space.
The speed of light in a torch is the same as the speed of light in a vacuum, which is approximately 299,792,458 meters per second. This means that light from a torch will travel at this speed until it reaches an obstacle or is absorbed by a material.