How many laser pens are needed to make killer weapons?

Although the 5mW laser pens, you will have to pair 200,000 units to create a dangerous gun.

How many lasers are needed to make weapons?

How many laser pens do you need to create a murder weapon? This sounds crazy. Because conventional laser pens are designed optimally to ensure safety in everyday use conditions. However, everyone knows that it is dangerous to look directly at the laser beam. So what is the power of a laser pen? Can you use it to kill people?

Can laser pens kill you?

What is a laser?

Before answering the question of how many lasers can create killer weapons, let us recall the concept: What is laser?

LASER , the acronym for 'Light Amplification by Stimulated Emission of Radiation ' translates as 'stimulated light amplification'. It can be understood in a simple way like this: In a laser-emitting device, people will power it, which is usually electricity. With an applied voltage, the laser active substance (either gas, quartz or liquid) is stimulated. Specifically, electrons will receive energy and then release energy in the form of light as photons.

These photons then create an amplified chain reaction into a beam of light at the same frequency, in phase and in the same direction. Therefore, you will see that the laser has only one monochromatic color and high orientation. Their energy can focus on a small point to generate heat. The US Navy has used these features to make laser devices strong enough to destroy small aerial targets.

Lasers create monochromatic beams with high energy.

The power of a laser depends on the energy we provide to the device. In everyday life you can estimate the power of a laser pen by its parameters. Specifically, the power indicator, usually measured in milliwatt (mW). Laser pens usually have a capacity of less than 1mW. And most of the popular laser devices sold in the consumer market have a capacity of less than 5mW. These numbers are very small and far from the threshold of harm.

How can lasers kill people?

As mentioned, a laser pen only has a capacity of less than 1 mW. You can only buy laser devices with high enough capacity to become weapons in special scientific or military orders. So the simplest way anyone can think of is putting them together.

You will need a lens to focus the beams. The easiest strategy to kill people with this device is to shine into the eyes of the subject. A beam strong enough to penetrate the retina and burn brain tissue. However, the problem is that you have to do this for a long enough time. Forcing subjects to open their eyes continuously and immobilize is essential.

Therefore, time is a difficult variable . James Kakalios, a Professor of Physics from the University of Minnesota, said that to form a lethal laser in normal conditions is really difficult. ' To be able to burn something with a laser, you need to focus your energy high enough for a short time, faster than the amount of energy that can be dissipated' . Kakalious explained. In the case where you laser the brain of the subject through the eye socket.

In fact, this problem has been developed in medicine instead of weapons. With a small dose, the laser beam can stimulate brain activity, even relieve pain. Tim Spellman, a postdoctoral fellow at Columbia University's neurology department, says he has spent a lot of time studying the effects of lasers on rat brains. Some positive effects on mice were recorded.

However, Spellman also acknowledges that high-power lasers can destroy their brains.'Basically, you have to heat enough tissue so that fat is burned. The brain has a high fat content. At least you need a few dozen seconds to a few minutes to do this with the laser beams'.

How many lasers are enough?

Common laser devices are limited to below 5mW.

So you can imagine how laser weapons can kill people. A lens is essential and most importantly, the time you project the laser through the eye, the weakest point in the body that the laser can take advantage of. The next question is how many laser pens are needed to make this weapon?

Rebecca Thompson, a member of the American Physical Society, said the number would be quite large.In order to burn brain tissue , you will need a power of up to 1kW. Although the 5mW laser pens, you will have to pair 200,000 units to create a dangerous gun.

The next problem is to arrange them to create a focused beam . At this number, the space that contains 200,000 laser pens can be as large as a car. The victim will have to sit very quietly in front of him and open his eyes.

Do not try to do this

Thus, pairing laser pens to form a murder weapon is indeed a crazy idea and not feasible at all. However, we want to pass this question to give you an idea of ​​the power of lasers, the way it can affect the brain, burn the tissue through the eye. Finally, we recommend that even though the laser pens have very small capacity, they are really dangerous when exposed to the eyes.