Friday, June 20, 2014

Does Nothing Exists?

Can there ever be nothing?

I mean we're surrounded by matter all the time. Even an "empty" glass is not empty! I know you might think there's nothing in it, but its full of air and air is packed! 1 cubic centimeter of air contains almost 30 quintillion (that's 30 billion billion) molecules.

But if I can remove the air from the glass, I can create what is know as a Vacuum.

The challenge however, is removing all of the air!

To this day the best scientist that have been able to do is to create what they call an Ultra High Vacuum.

At this point, 1 cubic centimeter of space contains not 30,000,000,000,000,000,000 molecules, but a mere, an amazing 100!

To put that on perspective, a vacuum cleaner, like you use at home, hardly changes the thinness of the air at all! In fact, if you use a vacuum cleaner at sea level, the vacuum created inside the operational part of the machine, only reduces the air pressure inside by 20%.

If you want much thinner air, if you want fewer particles per cubic centimeter, you gonna have to leave Earth.

But a lack of  oxygen, a lack of air, a lack of matter can even more dangerous when you go above 19,000 meters above the surface of the earth. This limit is known as Armstrong's limit.

We all know that the boiling point of water decreases as the altitude increases, and then air Armstrong's limit, the boiling point of your own blood, drops all the way down to the temperature of your own body.


If you reach that altitude without wearing a special suit, bubbles will form inside your blood. Your body will inflate twice its normal size.
All right, time to leave earth for good, let's into the space between the planets. There you can find a place where it only contains 10 particles/cu. cm. Then, if you leave our solar system into interstellar space, you only gonna find about 1 particle/cu. cm. The real winner though is the Intergalactic Space. Leave the Milky Way altogether and you can find regions where there is only 1 or two particle -- per cubic METER.

But, would it be possible to find a region of space, where there is absolutely and literally, nothing no matter at all? Well, according to quantum mechanics, NO!

First of all, you've got Gravitational and Electromagnetic fields that extends forever, beacuse the particles that cause those fields to happen have no mass whatsoever,


Now, this is what's really even more Mind-Blowing. There's a thing known as Virtual Particles thats happening all the time, even around us right now where there is no vacuum.

These Virtual Particles come into existence and then disappear, and we believe they exists for a couple of reasons. One big reason is the fact that our Universe continues to expand, even though that shouldn't be necessarily happpen. Where are we getting that extra force that pushes it? That causes it to keep expanding? Well, these particles that pop into existence and disappear maybe the answer.

Even crazier, is the effect what is known as The Casimir Force.

If you put two pieces of metal, nanometers apart, inside a vacuum, they will be pushed together!
One of the Most popular theory for why this happens, is that these Virtual Particles popping into space and dissapearing are actually reflecting off of the metal, but because the plates are so close together, particles with wavelenght longer than that gap, don't get reflected, so there's more virtual Particles pushing on the outside than the inside, then the metal plate contact!


I know these concepts have gotten pretty crazy, but rest assure that really all it means that whenever you feel down and feel like Nothing matters, you're scientifically incorrect. Nothing Matters? There CAN'T BE NOTHING! There's always matter! There's ALWAYS SOMETHING!

No comments:

Post a Comment