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Is a bullet capable of throwing a person back? The laws of physics cannot be cheated and if the victim is thrown back by a bullet hitting him, the shooter must experience even more momentum. It will be greater because, in the case of the victim, the bullet gradually slows down, penetrating the body, and in the case of the shooter, it comes out of the gun, relatively rigidly fixed in the hand. In addition, immediately after exiting the barrel, the bullet begins to lose velocity. This means that the farther it flew, the less impact it will have on a person (unlike the moment of shot, when the bullet must be accelerated, overcoming its inertia - at this moment the impact energy is maximum). Thus, the impact impulse of a bullet in a person cannot be stronger than the recoil of a gun. So, it turns out that in the movies people fly away after the shot only to emphasize the effect or the emphasis on the large caliber of the gun in the shooter.

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Why does whipping turn milk into butter? The microbubbles of fat fuse with each other Physically, milk is an emulsion - a suspension in water of tiny milk fat bubbles surrounded by a thin layer of surfactants. Shaking or even vibration causes these bubbles to merge into large droplets. The droplets float to the surface and form butter, a substance consisting of fat with a mixture of water, proteins, and other substances.

Can you refuse food in a restaurant and not pay if you haven't try it? Unless there is a good reason to refuse food - sawdust, cockroaches, hair, etc. - no, you can't. Catering company provides, attention, the Catering service (!) That is, if there are no complaints about the service, it is considered fulfilled - the food is spent, the cooks worked on the service and performed it qualitatively, you got the service - and you are obliged to pay for it, according to the price tag.

Do all ticks transmit encephalitis? No The ticks of the genus Ixodes - mainly the species Ixodes ricinus in Europe and Ixodes persulcatus in the taiga regions - are capable of storing and transmitting encephalitis virus. And, of course, ticks of these species transmit encephalitis only if they themselves are infected with its pathogen. The proportion of ticks infected with the virus can be very high, but never reaches 100%.

Is it possible not to sink in water just by lying on your back? The immersion depth of an object depends on its specific gravity relative to the liquid. The specific gravity of the human body and water are almost identical. But on an inhalation, the body weight becomes slightly less, and one can lie motionless on the surface of a lake, much less a salty sea. On exhalation, the specific gravity increases slightly due to a decrease in body volume, and a person sinks a little. In order not to drown in calm water, lying on the back, just keep the air in the lungs, after exhaling immediately making a breath. This, however, requires some skill.

Can ticks bite through nylon pantyhose? A tick can bite through pantyhose if it puts its proboscis between their threads. But it won't. The point is that ixodes ticks have no vision, and when they move around the victim's body, they choose a place to bite mainly with their sense of touch. They cannot perceive a tissue-covered area as suitable for feeding and look for bare skin. But a tick can get under pantyhose if there is an arrow or a hole in them.

Where do starlings nest if there are no birdhouses? Starlings never nest in the open air. If they have no birdhouses, they settle in hollows, where they build their nests from grass, twigs, and animal hair. When hollows are not found, they nest in old burrows of swallows or pikas, in rock crevices, and sometimes even in crowded nests of large birds of prey. If all lack suitable shelters, some starlings do not form pairs and miss the breeding season. So do tits, flycatchers, and other duplicate-nesting birds.

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Where did the custom of manicure come from? In ancient Greece there was a position called "kosmeta". As you might guess, the word comes from the Greek word for "cosmos," which translates to "order”. Thus, well-groomed nails are a step toward harmony. The cosmets were slaves, and their duties included bathing Greek citizens in special baths with aromatic oils, massaging them, applying makeup and a special "nail polish" consisting of animal fat and blood. The same was done by beauticians in ancient Rome in the 2nd century BC. It is believed that nail polish was invented in Ancient China in the XXX century BC. It was used to cover the long nails of the monarchs and people belonging to the higher classes. And in the Ming Dynasty in the 14th century A.D., women used to grow nails up to 25 cm long in order to ward off evil spirits. Long and well-groomed nails for women were considered as a kind of amulet against evil, and for men as a sign of masculinity. @easy_why ✅

Could the passenger land the plane if something happened to the pilots? Let's assume we have access to the cockpit. Let's assume that there is two-way communication with the ground and that they know how to use it, and that there is a pilot of this plane from the ground. But still the chance is slim to none. As one instructor who teaches retrained pilots said, even they get lost in the cockpit looking for the right buttons and levers, what about the passenger under stress! Given the speed of the airplane and the rapidity of the action, and the fact that leaving for the second circle would be an even greater challenge, my verdict is that it can't. @easy_why✅

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Can we hear echoes in the field? Yeah Echoes can be heard even in a field or at sea, with no visible barriers to the sound. Where does this mysterious echo originate from? The thing is that a sound wave is able to be reflected even from the air! It happens when the sound meets on its way layers of air with a different temperature or speed. @easy_why✅

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Is it true that newborns have no moles? In most cases, yes. Moles in newborns are rare, and the ones that are present are generally small. The fact is that a mole is a cluster of melanocytes, that is, cells that produce the pigment melanin. Melanin synthesis and formation of melanocytes is stimulated by the melanotropic hormone. The release of this signaling substance is highly dependent on the amount of light hitting the retina. And before a baby is born, of course, light cannot reach the retina. @easy_why✅

Why is warm air rising above cold? For it expands. In still air, the pressure at a constant height is the same at all points. If air is heated at a certain spot, its pressure increases, and it expands until the pressure equalizes due to a decrease in density. But then it turns out that the weight of the air column in the place of heating is less than in the neighboring place. The heavy cold air begins to flow under the heated air, pushing it upwards. In fact, this effect is a manifestation of the same Buoyant Force that makes a tree float in water. If the air continues to heat, for example from the hot surface of the earth, a steady upward flow will occur. @easy_why✅

Why is Facebook designed in blue? In the mid-twenties, Facebook founder Mark Zuckerberg took a color-blindness test and realized that he was color blind. He had trouble distinguishing between shades of red and green. This is one of the reasons why Facebook, and now Meta, are designed in blue – all variations of blue are available to Zuckerberg. In this way, one man's peculiarity influenced the color scheme of the world's most visited site, and may have set a whole trend in social media design. Later VKontakte, Twitter, LinkedIn and Telegram used shades of blue and navy blue in their design. @easy_why ✅

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