All optimists uses the famous proverb "to see the glass half full" as an indication of the presence of always hope even in the darkest moments, and that everything is not without its advantages as not without flaws. In the Permanent perception, that the other half of the cup is full of half empty. But, aware of another opinion in this popular proverb.
What does it mean if the vacuum in physics? Vacuum vacuum of space is completely empty place of the article, even where there is no air. When physicists Even this vacuum, on the quantitative level, contains a substance. But being a vacuum makes his distinctive physical traits. The glass half empty is that it seems half full air non-visible, making all believed to be empty. So what would happen if this was already half empty? Physics will answer this question, as usual in a series of "what if?"
The possibility of this happens on the ground is impossible, of course, but we are here together and we will work our imagination imagine possible scenarios. And certainly to us that this vacuum will not last even for a moment, but what will happen will be different if Jobna to the question, that is, in the cup is half empty?
Sntejel following scene. You are in a cafe with a colleague, and the table in front of you three cups, each of them half full of water, a cup East usual cup, half water and half air Water Air. And on the right cup else like him, but we've replaced the air vacuum. And on the left half of a cup filled with an upper and lower water vacuum Vacuum. We will continue cups per microsecond, starting from zero moment t = 0.
Nothing will happen in the first few microseconds fractions of a second, even the surrounding Balokwab will not be moved air molecules. Air molecules move quickly a few hundred meters per second. But some of them move more quickly than the rest. After more micro fractions of a second later, it will begin the most speed air molecules to enter the void left in the cup.
And it is surrounded by a vacuum left in the cup three aspects of the glass, while the upper side is surrounded by water, which will not enter the space expands to the same air speed. But what will happen due to lack of pressure inside the vacuum, the water begins to boil slowly steamed toward never half empty.
After about 150 microseconds fraction of a second air will begin to flow in the vacuum left in the cup, while the cup will be a vacuum left him very little water vapor.
After a few hundred micro fractions of a second, it will be the flow of air in the right vacuum cup very large speed, and the air will fill the void, and bumping strongly surface of the water, causing a wave of confrontational Sntnscher in the water and the cup before the bounce and spread in the air again.
The wave will cause vibrations in neighboring Cubans, before they heard the voice of the cup sitting next to slap stiff after a few ms fractions of a second of their occurrence.
Around the same time, after about 2 ms fraction of a second, the left cup will begin to rise in the air a little bit. Eventually pressed air will move the cup and water toward each other. Since the vacuum left in the cup in the Salafi half, this will lead to lifting the cup toward the water, and at the same time, water will move toward the void, which will be done very little water vapor in that moment.
Shrink vacuum with the movement of the cup and the volume of water will lead to increased pressure small amount of water vapor in it, which will slow down the boiling of which previously occurred and caused the presence of water vapor, but this will not make a difference.
Cup and water movement speed toward each other will be a very big now after about 8 ms fraction of a second. This will lead to bumping too hard water hammer in the bottom of the cup.
And fluid properties they are not offset by the compression, but the movement of the pressure fully, so every force that is going to run out of water in the bottom of the cup will move to the bottom of the glass and disintegrated. This is called the effect of water hammer, can its creation easily on any bottle full of water trick at parties, for example, when you hit hard enough on the nozzle bottle filled with moving the bottle down faster than the liquid inside, which is a vacuum between the two, thus causing the air pressure to move the liquid toward the vacuum with great force sponsor
In the case of the left cup, it will be very sufficient force to shatter even the strongest types of cups. The bottom Serttm separate Mounddh crashing to small fragments are scattered in all directions and infect all sitting around the table. While the rest of the cup will continue to fly up. All this will happen has passed about half a second and no more.
At the same moment that sat around the table will hear the sound of the crash and the crash, and will follow up the cup with his eyes moving up toward the ceiling, which will have enough energy to hit the ceiling and crashing.
Before landing glass fragments scattered also infect those who sit.
And it will consist of the final scene of Ayman cup half full with water and the other half with air, as well as the cup East, with a glass easier Crashed, and a set of glass injured by shrapnel in their faces. Therein lies the lesson of the subject, when the individual will be considered to be optimistic about half filled, but if it will be considered a pessimist half empty. In both cases, the physical will bow, trying to escape from injury fragments of glass scattered.
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