Tricks our bodies Bashny.Net

Our universe is full of mysteries, and we do not need to go far to find them. Some of the most complex mysteries keep our own bodies. The question is why, for example, the hair becomes gray, it may be much more interesting question is why black holes "ticking". Fortunately, scientists are also concerned about these little everyday mysteries of our bodies, and they set out to find the answers. As a result of their hard work, we now know the answer to a number of mysteries, such as ...





1. Why does our voice on the recording is always disappoints us?

Once it happens to all. We live their own lives, secure in the knowledge that our voice sounds great, but at some point, someone brings a tape recorder and record our voice on tape. And when start playback, we strongly surprised. Because our smooth, clear voice on the tape does not sound too good.

Height is not the voice. Timbre is not one. If you - a man, you will find that your voice sounds higher than you thought. And if you are a woman, your wonderful soprano, for no apparent reason suddenly grows a beard, and is starting to sound extremely low. After that, your first instinct would be a desire to burn down the electronics store, never to such a hearing. But do not rush it. What you hear on the record, in fact is your real voice, while the thing you hear in your head during a conversation - a "avtonastroennaya" version of your voice that can be heard only you and no one else . We hear our own voice because the sound waves coming from the vocal cords, reach your eardrums and cause them to vibrate. But the sound vibrations do not stop: they rattle around our skull, echoes from the inner surface, distorted, and as a result are converted into what we hear.

But why do we always think that our voices on the recordings sound worse? As with most things related to people, it all comes down to what we want to hear. Men prefer women with higher voices. Women, on the other hand, prefer men with lower voices, because deep, deep voice is associated with a large, strong body, and a man for a woman is considered to be the best option. High tone of voice, in contrast, is associated with a small, graceful body, and do not forget about the fact that humanity as a whole tend to think that women should be less than the size of males. So when the man says, he feels that his voice goes through his skull, as if the subwoofer sounds very low. A woman's voice in my head sounds high and feminine, and in the world everything is fine. When we hear the voice on the recording, we realize how far our real voice of an imaginary namiideala. Recording - a technological "bells and whistles" that can easily destroy our fictional image.



2. Why do you sometimes look weird in the photos?

The thing that scares more than his own voice on the recording is to view the pictures of your friends. At some point you will notice in the corner of one photo a strange man who looks like a foreigner, and was surprised to say to yourself, yes it's me! Do you recognize this man in the picture, and that's good. That's just the man is not like the one you used to watch in the mirrors, windows, switched off the glossy screens. This man, too ... everything off.

However, there is good news! You are not crazy. People look at photographs differently due to a number of reasons.

First of all, every time we look at ourselves in the mirror, we always consider the reflection. And we forget that a mirror image - not the same thing as a real image. In fact, in the mirror, we see what we want to see, and the image in the mirror, we eventually get used very much. And when someone suddenly shows us our photos, we suddenly see that our face "completely changed" and become asymmetric.

Another reason why the still and video cameras and give us a "strange version of us" is that the human eye and the camera lens work differently. Another thing, which is easy to forget: there is no objective way of knowing how really looks like one or the other thing. In fact, it all comes down to how our eyes and the camera handle the reflected light. You can look through the lens of the camera's strange, but you'll look even more strange if suddenly look at yourself through the eyes of a cat.

The camera does not work like your eyes, but that's not all. Still have different cameras that work in different ways. For example, a telephoto lens shortens the distance between the photographer and the subject. Inanimate objects suffer from it a little, but people can change very much as telephoto lenses can reduce the distance from the nose to the ears that will change the proportions of the face. Lens in the lens of another type may have the opposite effect, through them you can look thicker, for example. Also do not forget about lighting. If it is incorrect, then even a very good shot can turn into something terrible.

Put all these things together, and you will realize that every representation of you - is subjective, and no image, you see, can not be called "real version of you." Sit back and think about it for a while.



3. Why does the skin on your fingers wrinkled when you take a bath?

Everyone knows how to determine it's time to get out of the bath when the bath water has cooled down, and a bottle of whiskey - empty. However, when we were younger, there was another, much less harmful to the liver way to know that it's time to get out of the bath when the skin on the fingertips began to shrivel like prunes. Over time, science could not answer why this is happening. But now they seem to have split this toughie. There is a theory which suggested that the wrinkling of the skin on the fingers is not only a specific function, but also a certain evolutionary advantage that allows us to capture wet objects more closely. You've probably noticed that the wrinkles that gradually formed on the fingertips, gently remind protectors on rubber tires, or any other material with a high coefficient of friction. In today's world, these wrinkles on the fingers allow us to better hold the soap. And that, in general, everything. However, if you look back at the time of the caveman, there shriveled fingers, perhaps is a huge advantage that our ancestors were living in a humid climate, used for survival. Additional grip strength, which give shriveled fingers, let them stronger hold spears and other weapons, they fought off hungry predators.

And by the way, your fingers will not shrink in the water if these nerves are damaged fingers. What is a clear proof that the shrinkage of the fingers is a deliberate reaction to our nervous system, which knows a few tricks that allow us to live a little longer.



4. Why do you always urinate more when you are cold?

Have you ever came in the middle of a hot day to cold air conditioning, and feel that you want to write? Or ever dived into a pool of cold water, and found that you want to use the toilet, but to jump into the pool was nothing like this? If you did not notice before, but now you know it, because it's - well-known scientific phenomenon. So enlighten us science: why do we mochimsya more when we are cold?

Phenomenon that makes us more pee in the cold, called "cold diuresis". Lowering the temperature and the frequency of visits to the toilet are connected by an exponential dependence. The colder it gets, the more a person thinks that the urine has become severe and develop a strong pressure on the bladder wall. It is difficult to name the reason why the bladder begins to suffer from overload. It seems that today no one can say for sure why this is happening. But according to one of the leading theories, this is due to the blood vessels, which begin to shrink in the cold, especially in the extremities. As a result, the blood gradually begins to move deeper into the body. She wants to be hot, and therefore provides your own limbs to deal with all these cool things. A side effect of tactics "retreat blood" is that in larger arteries and veins repeatedly increased pressure which eventually begins to depress the kidney. A kidney, in turn, trying to compensate for the increased pressure, and begin quickly "drained".