Coherence keeps the laser pointer beam focused at a distance

Why is the laser beam so thin? There is no absolute reason to say that they must be thin. The “green laser pointer” is only light amplified by stimulated radiation, so if you prepare some optical gain medium in its excited state and put in some “seed” light of the correct frequency, it will be…

A more powerful laser will produce a brighter scattered beam

If you see a point or a beam, you have a visible laser. Whether you see a light beam in the air depends on several factors: In clear air, the light beam will be scattered by air molecules in a process called Rayleigh scattering. The process is fairly weak and depends on atmospheric pressure, green laser…

Never point the laser pointer can be in the eyes

How much power does the laser pointer need to emit a visible beam? This is not a question of power, which is equal to the intensity of the laser. A more powerful green laser pointer will make the spot farther and brighter. The laser line used in the building is a spot of light “diffused” through a…

The laser pointer beam behaves differently from other light sources

How accurate is the laser tape measure? More accurate than steel belt. When you measure a distance greater than about 3 meters, the tape will inevitably sag, so the measurement is not very accurate. green laser pointer measurement working at the speed of light does not have any sagging. Obviously the cheaper model is not accurate, but…

This is a real modern laser pointer weapon

I am tired of lasers. Can you think of an original sci-fi weapon with physically possible effects? There are many good answers here, but I will add: What about the green laser pointer that really work? If no medium can pass through, they are invisible, and they actually travel at the speed of light. You just stand…

Can a laser pointer shoot down a drone?

If you really use a powerful laser, you have an aid to aim directly at the camera, if the remote pilot uses trans-horizon/first-person vision, then he will be forced to use the map to navigate and eventually go home. It will be very difficult. Compared with manned aircraft, green laser pointer are much more harmful to drones….

The airborne laser is the most ambitious laser pointer

What is the best laser? Well, usually putting a laser pointer on a rifle is a bit unnecessary. However, if you really want one, I suggest you use PEQ. These are a little heavier than a single laser, but it is one piece. It is a flashlight, a red laser, and most importantly an infrared laser. There…

Laser pointers in Star Wars look like bolts

Why do the lasers in “Star Wars” look like bolts when they are actually beams?Because without these special effects, the movie is really boring. Just imagine if it was in the real world. Hans pulled the trigger, and at the same time we saw a cloud of smoke, there may be some sparks hitting it….

If the laser beam can travel at the speed of light

What will happen to people who are hit by a laser pointer blaster (Star Wars)? Unlike an ancient laser pointer that emits a coherent beam, the blaster emits a beam of superheated plasma, or a beam of self-sufficient high-energy particles, depending on who you are asking. The most powerful E-11 (standard stormtrooper carbine) can evaporate anything except…

The huge spaceborne laser pointer weapon is technically difficult

There is no air in space, and SBL does not have the problems of beam refraction, absorption, jitter and thermal blooming in the atmosphere. However, the biggest problem with space laser pointer weapons is sufficient power, and the technical difficulty of deploying massive and bulky spaceborne laser weapons in orbit is too high. , Reliable, controllable, high…