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8 Scary facts about lasers, including contact lenses that fire laser beams

The laser was invented in 1960. Since then, the iconic ray in science has increased tenfold. But when lasers go to the dark side, things get weird and even scary. They whisper messages into people's ears, there are now contact lenses that shoot laser beams, and plasma balls that set the enemy on fire. Astronomers are also of the opinion that the threat of the earth could in the future include aggressive aliens. While they plan to cover the planet with lasers, nobody knows how to deal with a current problem – the mysterious rays that attack hundreds of pilots every year.

SEE ALSO: 10 Strange Disgusting and Creepy Facts About You

8 Brate Eyes Laser Pointers

Laser pointers are clever devices. They point out information in presentations and make the speaker look cool. Unfortunately, these clues also fall into the hands of children. When children come together and have something that radiates a ray, they will judge it as a joke on someone else's eyes or even look at the light. The results are terrible. [1]

In 2018 a Greek boy played with a pen that belonged to his father. The 9-year-old was fascinated by the green laser and stared in again and again. Some time later, he told his parents that he had trouble seeing from the left eye. A visit to the doctor confirmed that the device had burned a hole in his retina and caused two more damage areas nearby. Together, the burnt tissue formed a blind spot in the middle of his vision. All hope for a full recovery faded as eighteen months went by without improvement.

Although retinal traumas are widely spread by hands and in some countries the strength is limited and varies between 1 mW and 5 mW, sales do not appear to be regulated. Anyone can buy these laser pens online or from street vendors. In 2015, a guy ordered a pointer that exceeded the 5 mW limit with an epic power of 50 mW. For some reason, he shone it in his brother's eyes for a second. One second was enough to cause irreversible damage.

7 Contact Lenses Shooting At Laser [20175] In 2018 scientists bought an eyeball for a cow. They needed something similar to a human eye to test a contact lens, and the version for cattle matched exactly. There was a reason why they could not first test their invention on a living person. The thing shot laser. In fact, the cow's eye successfully blasted during the experiment. [2]

The contact lens was not a high-tech weapon. The laser was exceptionally weak and could not damage living tissue, although the team did not want to risk it to the human eye. Instead, researchers designed the flexible film for identity purposes. It worked that way. First, a special material was forged by nano-scale lattice pushed into polymer membranes. The resulting film was so thin that a stack of 1,000 1 millimeter would be high.

These membranes fit easily into contact lenses, security tags, barcodes and banknotes. All it takes is to scan the object with a laser. This causes the internal film to produce its own laser in return. The wavelength signature of the light can be adjusted to be unique or behave like a bar code by adjusting the material and structure of the grating. Such a signature would be recognizable to the scanner and very hard to fake.

6 Lasers could tear nothing

There are two ways to increase the power of a laser. You can either shorten the pulses or increase the energy of the laser. Physicists maintain their projects in different ways, but laser light is getting stronger. In 2016, a laboratory in Shanghai produced the strongest beam ever recorded. The Chinese team generated light pulses that were so short that they each lasted a trillionth of a second. However, they have proven that small things can be dynamite. The impulses registered an epic 5.3 petawatt (PW) or 5.3 million billion watts. [3]

In 2018, the plant was expanded to realize the dream of a 100-PW laser. If all goes well, the laser zaps targets into an underground chamber by 2023. The impulses can expose materials to extreme pressure and extreme temperatures that are not found on Earth. While this is wonderful news for scientists who want to learn more about space, where such pressure and temperature prevail, researchers are mainly following a strange phenomenon. At the moment it remains theoretical and means "cancel vacuum". This event describes the light that tears both electrons and positrons (the antimatter counterpart of electrons) from empty space. If the 100-PW laser is successful, it would basically tear the void. Russian physicists work on a 180-PW laser.

5 Laser AK-47

In 2018, a newspaper revealed the existence of a deadly weapon. The South China Morning Post claimed that a Chinese company, ZKZM Laser, had developed an assault rifle. It made all other assault rifles look like candy bars. The ZKZM-500 is said to have fired lasers instead of bullets. The rifle fired about 1,000 shots with invisible beams, each lasting about two seconds. [4]

It gets scary here. This "AK-47 laser" should be able to hit a human target from a distance of 800 meters and put clothes on fire. An anonymous researcher working on the project also said that a direct hit caused "immediate charring" of human flesh and caused unbearable agony. How this fact was discovered with a barbecue taste is best left to the imagination. ZKZM-500 could even shoot through closed windows.

If true, the technology would be as remarkable as it is frightening. However, several scientists examined the details of the rifle and missed the truth. The newspaper claimed that the gun weighs 3 kilograms and has a lithium-ion battery. However, the rifle's characteristics required a weight of up to 90 kilograms, and a lithium-ion battery could not deliver 1000 devastating shots at 800 meters.

This distance and the assertion of the penetration further weakened the assumption that ZKZM-500 actually exists. The intensity of a laser decreases the further it moves forward and also when it passes through a medium such as glass or gas. Calculations showed that the beam, when he had covered 800 meters, could not roast an ant. With or without windows.

4 A Planetary Camouflage Device

The search for extraterrestrial life is no longer a joke. Scientists are seriously thinking that aliens might exist. However, many believe that humankind should stop promoting itself. This precautionary group included Stephen Hawking. [5]

If we attract the attention of a race that can both capture our signal and cover the distance, there is a chance that it may have a head start in terms of technology, weapons, and attitude , Researchers have compared this situation with the catastrophic arrival of Europeans on the American continent. Similarly, extraterrestrials could destroy Earth's resources, commit atrocities, and even spread diseases that humanity can not resist.

In 2016, two Columbia University astronomers suggested that lasers could protect the planet from astronauts. If other civilizations, like our scientists, were looking for habitable planets, they would look for transits. At this moment, the light of a star darkens as a planet circles in front of it. They would understand that some planets are in the "habitable zone" of their star, with temperatures ripe for water and life. The Columbia researchers said Earth transit could be masked by turning on a powerful laser to replace the darkened light as the planet passes in front of the sun. On the other hand, this would only work if the laser is pointed at the alien home star and nobody knows where it is.

3 Lasers whispering personal messages

In 2019, MIT has taken the concept of doing bizarre things with lasers to a whole new level. They invented a system that can send whispers to a person. Even more sinister is that the transmission is inaudible to everyone else around them. According to the developers, there is no danger. In fact, this is the first laser system that is safe for human skin and eyes. It may be safe, but the whole idea of ​​suddenly hearing a voice in the head remains disturbing. [6]

The technology can even be used in a noisy environment, such as a public place, to deliver a message to someone. One day, this could be useful for personalized advertising – as if those ads and emails based on retrieving personal information were not annoying enough. The military applications are also clear.

The whole thing sounds incredibly complicated, but the process is easy to understand. To locate the message so that only the target can hear it, a thin laser is aimed at the ear. Specifically, the water vapor in the air near the person's ear. The vapor then vibrates with the emission of the laser at an audible frequency. Message delivered. The system is not perfect though. It can not work from any distance the researchers want. Whispering lasers can currently only work from a few meters away. As you get closer to the system, you get an uncomfortably high pitch. Move it further back and the sound disappears.

2 A screaming plasma ball

Killing an enemy soldier is easy. There are a variety of weapons and tactics to choose from if you want to wipe someone off the ground. It proves extremely difficult to disable a storming Horde without sowing death like confetti. [7]

The US Department of Defense (DoD) has a wing dedicated to preventing victims from the enemy. This branch is burdened with the long title of the Joint Non-Lethal Weapons Development Program (JNLWD), but brings forth new ideas. In 2018, the program designed something stunning. The system weighted with a similarly heavy name was called a non-lethal laser-induced plasma effect (NL-LIPE).

As the name implies, it is plasma and laser. In this case, plasma is created when electrons are removed from air molecules. When activated, NL-LIPE shoots a beam that creates a plasma ball at the desired location. For example, before or in between, to approach enemies without putting their own people in danger of being stunned. An operator then uses a second laser that lets the plasma do scary things. The ball can sparkle and even burn clothes. The scariest option is to make the plasma scream, a sound that resembles the human voice in a disturbing way.

1 Increasing Laser Attacks on Pilots

In 2016, a Virgin Atlantic flight left London. The passengers traveled to New York, but only reached the Irish coast. At this point, the plane returned and landed at Heathrow Airport in London. The reason was worrying. The first officer fell ill after a "laser beam incident" as a spokesperson for Virgin Atlantic called it. [8]

Although the details were sparse, the officer was likely to experience a jet falling from an unknown location into the cockpit. This is a well-founded assumption based on thousands of incidents where more information was given. For some bizarre reason, aircraft in the UK are the target of people shooting lasers at pilots.

The trend started with only 20 reported cases in 2005. According to the Civil Aviation Authority, the situation escalated rapidly. From 2010 to 2014, over 1,300 of the disruptive attacks were recorded each year. One of the most serious incidents happened in 2015. A British Airways pilot was landing at Heathrow when a laser shot into the cockpit. He described it as a "military-strong" laser and the event damaged reported the pilot's view. So far no one has solved the puzzle. The reason for the attacks is as unknown as the location from which the lasers come.

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