Mysterious questions, to which few people know the answer - but we will tell them to you)
✏ Does the person have pain when their head is cut off?
Yes, it does. A medical study in 1983 concluded that no matter how quickly an execution is carried out, a few seconds of pain is inevitable when a person loses their head. Even when using the guillotine, which is considered one of the most "humane" means of decapitation, severe pain cannot be avoided, which will last for at least 2-3 seconds.
✏ What are lethal injection needles sterilized for?
That the victim would die from poison, not from infection.
✏ What color will the chameleon appear in the mirror?
The chameleon will become the same color as the object it is sitting on.
✏ What happens if you swallow a needle?
It is impossible to predict the end result of swallowing a needle with 100% certainty. But there are several scenarios according to which events usually develop. In the most dangerous case, the swallowed needle will enter the lung or heart and make a hole there, which will lead to death without surgery. Of course, death will not come instantly (although in some cases everything happens extremely quickly - within a few hours), but the inflammation provoked by the needle will ultimately lead to either the loss of part of the lung (with a delayed operation) or death (if without doctors). The location of the needle inside the body is detected using an X-ray. And if a lung or heart is damaged, then immediate intervention of surgeons is needed. If the needle reaches the stomach, then the probability of a successful natural outcome (in the literal sense) is 80%. That is, the needle will most likely come out with feces. True, the remaining 20% are forced in most cases to perform an operation to remove excess metal from the body.
✏ What happens if you manage to eat three tablespoons of salt?
If we consider your question exclusively from a theoretical point of view, then according to the opinion of most doctors, the conditionally lethal dose of table salt, consumed at one time, is 250 grams.
Now let's try to calculate based on the known:
One teaspoon can contain 7 to 10 grams of edible salt.
In one tablespoon - from 25 to 35 grams.
Thus, the maximum amount of salt eaten from three tablespoons will be 105 grams.
This dose is far from lethal, however, it can also first cause a strong thirst, and then terrible swelling of the whole body due to the fact that salt retains fluid in the body very well ...
✏ Why is there green blood?
The red color of the blood comes from hemoglobin, the oxygen-carrying pigment. But many invertebrates do not use hemoglobin to transport oxygen, but other pigments, the "working part" of which are ions of different metals. In particular, the blood of many mollusks, arthropods and some other animals contains hemocyanin, a pigment with a copper ion. Most often, this compound makes the blood blue, and sometimes (for example, in cuttlefish) bluish-green. One of the species of frogs found in Cambodia also has green blood.
✏ Why can't you sleep in front of a mirror?
Mirrors can cause a whole series of unmotivated problems in a person's life, both in personal life and with health. This is because refraction, reflection and distortion of the information received occurs in the mirror, especially for old mirrors. And as for antique mirrors, it is generally better not to hang them in the bedroom, they have accumulated so much information during their existence that it will only have a negative impact and there will be one harm from them.
If we move away from the magical influence, then at the level of physiology there are also explanations of why it is impossible to sleep in front of the mirror. In a half-asleep state, any movement out of line of sight is subconsciously perceived as a signal of danger, and, fixing a reflection in the mirror, the brain "begins" to get nervous and panic. In addition, the mirror in the bedroom disturbs the intimate atmosphere, it creates the illusion that there is someone else in the bedroom.
✏ Why do men get erections in the morning?
One theory is that morning erection occurs as a result of an increase in the amount of testosterone in the blood. The male hormone reaches its maximum concentration between 5 and 9 am, forcing the penis to get up.
✏ What will happen to a man on Mars without a spacesuit?
Extremely rarefied atmosphere, with a pressure of 640 Pa [approximately 1/150 of the Earth]. Water in such conditions boils at a temperature of about +0.5 Celsius, which is much lower than the temperature of a human body. That is, without a hermetically sealed rigid spacesuit, similar to the lunar one, a man on Mars will instantly boil his blood, it can be prevented by arterial / venous pressure in the human circulatory system). But the release of some gases from the blood will be almost guaranteed, causing circulatory disorders, embolism and symptoms close to decompression sickness. It is incredibly painful and dangerous to health, and in every practical sense, atmospheric pressure below about 6.3 kPa is detrimental to humans]
✏ Why does the déja vu effect occur?
The state of déjà vu is like re-reading a long-read book or watching a movie that you have watched before but have completely forgotten what they are about. You cannot remember what will happen in the next moment, but as the events unfold, you realize that you have seen these few minutes in detail as a reaction to several successive events. Déjà vu is a fairly common phenomenon; studies show that up to 97% of healthy people have experienced this condition at least once in their life, and patients with epilepsy are much more likely. However, it cannot be induced artificially and each individual person rarely experiences it. For this reason, scientific research on déjà vu is difficult.
✏ Why do humans have more than 200 teeth?
A unique operation was carried out in the Indian city of Mumbai. Dentists removed 232 teeth from 17-year-old Ashik Hawaii, which grew in his mouth as a result of a rare disease. Dentists say this is arguably the most difficult procedure of its kind ever performed on the planet, according to the Guardian.
The young man went to the doctors with a complaint of a tumor on the right side of the lower jaw. After a thorough examination, doctors diagnosed Ashik Hawaii with a rare disease called odontoma (benign bone formation), which was in an advanced stage. This ailment is a benign tumor of dense consistency that forms on the teeth. Thus, more than 200 "extra" teeth appeared in the teenager's mouth.
✏ Why can't you take the light bulb out of your mouth?
The size of the mouth opening decreases slightly under stress. If a person is not afraid, then he easily takes the light bulb out of his mouth, and YouTube is full of examples of this. If you really want to test all this for yourself, but it's scary, then the solution has long been known: put a caramel copy of a light bulb in your mouth. If anything, it will always be possible to dissolve it.
✏ Why is yawning contagious?
The reason for the contagiousness of yawning is psychological. Several years ago, researchers at Drexel University in Philadelphia conducted a study. They showed the subjects a video of people yawning sweetly and observed the reactions of the participants in the experiment. Some, looking at the screen, began to yawn themselves, while others remained more or less indifferent to this spectacle. Depending on the reaction, all subjects were divided into two groups and conducted psychological testing.
It turned out that those who are more easily infected with someone else's yawning are more inclined to establish connections with the people around them. In other words, the more sociable a person is, the more often he yawns “for the company”. (Incidentally, schizophrenics who are not empathetic yawn much less often than people with a normal psyche.) In addition, according to a 1989 study at the University of Maryland, the contagiousness of yawning does not depend on the angle from which the observer looks at the yawning. In any case, a reciprocal yawn is a sign of sympathy. It should only be remembered that rampant yawning is the most common cause of jaw dislocation.
✏ Can a cockroach enter the ear?
How can he get there if he has no documents? On the other hand, mortally frightened people with cockroaches in their heads often go to emergency rooms. All jokes aside: the cockroach easily penetrates the ear opening, but for some reason finds a way out with great difficulty. To extract it, the creature is drowned in oil or lidocaine, after which it is removed with long crocodile tongs.
✏ Why can't I take pictures of sleeping people?
There is an opinion that it is impossible to take pictures of sleeping people. But why?
Superstitious people assume that photographing sleeping people takes away their vital energy, which can lead to further death.
Earlier, in ancient times, as well as now, superstitious people believed that the soul of a person leaves the body in a dream. Sleep is a "little death". It was believed that sleeping people could not be carried or shifted to another place, because the soul could not find a way back. It was also impossible to draw a portrait of a sleeping person. It was believed that this could lead to illness, separation, or cause treason. With the advent of photography, this belief was transferred to photography.
In addition, the creation of silent photographic equipment was quite difficult. Usually, during photographing, the camera made a noise that could wake the sleeping person. When taking pictures indoors, the flash usually fires. Its light can awaken the sleeping person.
From a reasonable explanation, the only reason not to photograph the sleeping person is the incorrectness of such an act. If you get a person's consent to photograph him in a state of sleep - please, otherwise - is it worth doing? Indeed, in a dream, a person is defenseless and does not control his body.
✏ Why does the wristwatch stop when a person dies?
Investigators, especially those involved in solving murders, know that often at the same time as a person dies, his wristwatch stops. Even if they did not receive mechanical damage.
The fact is that, being on the arm for a long time, a metal watch, possibly (especially with an iron or leather strap on the left hand), becomes part of the human electromagnetic field, as if included in the electrical circuit, playing the role of a kind of grounding. All the energy of the body flows down to this end point (in electronics, such a part is called a terminator, or a plug).
Gradually, after a few months of wearing, the terminator watch acquires the charge of the human field and is fed by it. The energy of the compressed spring is supplemented by the energy of the human field.
If the mechanical watch is out of order, it may be necessary to go first not to the workshop, but to see a doctor!
It should be remembered that this is just a theory and there is no documented evidence of this, despite the statements of the investigators. Therefore, the article was classified under the heading "Other".
✏ How much fat do you need to build to become bulletproof?
If a person is fired at from a pistol with a caliber of 9 mm from 5 meters, then in order for the bullet not to reach the vital organs, it will take about 30 cm of fat. Now, using Mosteller's formula BSA (m?) = ([Height (cm) x Weight (kg)] / 3600) 1/2, where BSA is the surface area of the human body (m?), Weight is the mass (kg) of the human body, Height - the length (height, cm) of the human body. You need to calculate the surface area of your body. To get the mass of the required fat in grams, you need to multiply the resulting body surface area in square centimeters by the thickness of the fat layer (30 cm) and the density of fat, which is 0.92. Thus, a person weighing 80 kg and height 1.80 m theoretically needs gain 552 kg of fat so as not to be afraid of bullets.