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Army Night Vision Goggles ENVG-B

05.05.2021

Newly developed by the US military, the ENVG-B night vision device combines computer vision, white phosphor tubes and a binocular design. The glasses can be used during the day in fog and smoke, and the image through them is extremely clear, bright and close to real.

Traditional night vision devices are a monocular with a green phosphor tube. The image clarity of these devices is such that the observer has to think out a lot on his own, which is highly undesirable in combat and extreme conditions. Therefore, by order of the military, new night vision devices were developed, which not only increased the clarity of the image, but also brought binocular vision to the device, which makes it possible to navigate much better in the environment and better estimate the distance to the target.

The ENVG-B uses white phosphor tubes to bring the colors in the image closer to reality, as well as a computer system that draws the contour of the observed objects. All together creates a picture in which everything or almost everything is clear. The new development is also lighter than traditional night vision devices, but still heavier than conventional binoculars (ENVG-B weight is about 900 g), therefore it is attached to the fighter's helmet and can be folded back.

Going forward, the US military is looking to get night vision goggles in the form of sunglasses.

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Mind on vacation 13.08.2021

Many researchers agree that, from a biological point of view, one of the main reasons for increased cognitive flexibility is stress reduction. We will not deny that work tests our nerves for strength, but it turns out that, within reason, stress is even useful. It is he who activates the mechanisms that help us perform daily activities, as if motivating and urging us. This is the so-called eustress, which is translated from ancient Greek as "good." But negative stress - distress - is always negative, because it can take a chronic form, bringing with it all sorts of diseases. Distress occurs when irritability is prolonged, pressure increases, fatigue, increased anxiety, sadness and even anger appear.

Therefore, the main thing that a good vacation can do for our health is to reduce the level of chronic stress. Idleness in reasonable amounts helps the brain to relax and reverse all negative effects. Doctors also advise to increase sleep time on vacation and change the emotional environment. That is, if there is noise and din at work, it is worth making silence at home, stop continuing to answer calls and letters and deal with work matters.

Another key to total peace and perfect relaxation is to enjoy the wait. Why do we like waiting for something good so much? Ask dopamine, which is produced in the neurons of two areas of the midbrain: in the substantia nigra, it is responsible for muscle tone, and in the ventral tegmental area, it is involved in the reward system of the brain. Both areas contain up to 600 neurons that transmit signals to other areas of the brain. Dopamine is released and causes pleasant sensations at the thought of a future vacation or other reward for work. For a vacation to go well and not stressful, you need to constantly be surprised, get to know something new and, of course, visit unknown places. And in the evenings, neurologists recommend pampering yourself with unusual dishes.

That's just stress can break the ability to be surprised. The study shows that the high levels of stress that many face during the workday reduces the amount of dopamine released and alters metabolism. The worst thing is that the consequences can spread throughout the brain, especially in those areas where the substantia nigra and the ventral tegmentum send their signals. Korean scientists also proved that chronic stress can change the number of dopamine receptors. And this already leads to the development of depressive disorders and other mental disorders.

Thus, a stress-free vacation will help rebalance the dopamine system.

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