If two countries have soldiers at war and both have infrared high power laser pointer night vision goggles, can’t they see each other’s location? Yes, this is a good question. Since I retired in 2003, because these things are common, my information is a bit limited. In Korea in the mid-1980s, we had passive night vision, called…
Tag: Colour
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…
The green laser pointer still has a relatively safe power level
If you mean under “normal” conditions, that is, there is not much dust in the air, and the humidity is within the normal range, then it largely depends on the wavelength. The shorter wavelengths are more dispersed in the air molecules (the presence of gas) than the longer wavelengths. Dispersion is the cause of the…
Your laser pointer beam can go into space
Laser is a high-energy coherent and extremely concentrated focused electromagnetic wave. But it will eventually pay remotely. I am not a green laser pointer expert by any means, but I think one of the reasons is that the beam itself consists of multiple wavelengths. There are countless wavelength starting points between any two consecutive peaks in the…
The divergence of the laser pointer beam is usually much smaller than other light sources
We must first determine what we mean by the problem. Because light will not stop spreading. The more interesting question is how far we can see the reflection of the laser under ideal conditions. In complete darkness, when it shines on a white surface, we can see a <5mW 650nm laser from 500-1 km away….
Is it possible to destroy the earth with a laser beam powerful enough?
Can laser treatment really reverse scalp hair loss? green laser pointer treatment may thicken existing hair, thereby inhibiting the temporary growth and density of hair. The only three ways to increase hair density are hair transplantation, hair micro-pigmentation (creating the illusion of shaved head/creating dark shadows between existing hair) or wigs. Is it possible to destroy the…
The green laser pointer emitting 5W power will be very bright
How powerful is the most powerful laser in the world? As far as I know, the most powerful green laser pointer, the ruby laser, is used by the US Navy. With a power of a few megajoules. They are designed to shoot down all types of incoming missiles. This is derived from memory, and they may…
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…
Use laser pointers with inappropriate wavelength and power level during surgery
I plan to do green laser pointer gum treatment in Turkey. I have never done this procedure. How do I know they will do a thorough job and what does it look like? This is an immature procedure and technology. Basically, it is still experimental. If you want good results, you can use sophisticated scaling and root…
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….