Where is the end point of the laser irradiation

Where is the end point of the laser irradiation

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Where is the end point of the laser irradiation

Q: If you shoot a laser in space, will the laser continue to move because there is nothing to extract the energy from the laser pointer and it will dissipate? won't it stop?
Laser light in space continues forever unless it hits something. However, if you're far enough away, you won't be able to detect the light. Projectiles also last forever unless they hit something.





Lasers produce light that can be tightly focused. That is, at long distances, the light does not spread out very much. With a laser pointer I can only see a small spot all over the room. If you look further away, it becomes a little bigger. If you go far enough, the light will eventually spread far enough to be undetectable.

Newton's first law of motion states that an object in motion will continue to move until acted upon by an external force. There is no air in space, so projectiles cannot be stopped by drag. Although there is gravity in space, a projectile will continue until it gets close enough to a large object, such as a planet or star, until it is pulled by the object's gravity and stopped.

Users, sellers, professionals, pilots, airlines, regulators and everyone involved with lasers can reduce the number and severity of laser he pointer accidents.





The following information has been provided by the International Laser Display Association (ILDA). It is primarily about camera sensor damage at concerts, but also applies to using laser pointers “around the house” and aiming them into a camera.

Lasers emit concentrated beams of light, which can heat up sensitive surfaces (like the eye's retina) and cause damage. Camera sensors are, in general, more susceptible to damage than the human eye.

For large scale shows such as televised concerts, laser show producers work with clients to avoid TV camera locations and video projectors (ILDA Members, see this page for details; login required). However, it is not possible for laser show producers to be responsible for all cameras, smartphones and camcorders which might be used at a show.

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