What is Quantum physics and how does it effect our daily lives.?

Answer 1

I won't go into depth about this question, i;m sure there are loads of people who know a lot more about this that I do.

Basically, it's about getting away from the idea of absolution. In classical physics we talk about things as being there, like a ball, an electron orbiting an atom, an atom being there meaning it exist, totally and without exception.

In QP, this isn't the case. Here we look at things on the tiniest of scales and we find that actually at this level the existence of matter becomes blurred. The way I understand it, the world exists as a string of probabilities, a wavefunction is somtimes quoted. Basically when you look at something, the thing's wavefunction collapses and becomes real and absolute, i.e it exists. The probability of that collapse is nearly 100% for every item around us. When we look away the things become cease to exist in that form and reappear only when they need to exist, i.e something aknowledges their existence. If you put an electron in a black box, where there was no light or anything, that electron would exist as a wave collapsing only to an electron when something measures it's existence.

Does that make sense? Probably not, i'm great at explaining this. Definately get a book or something. QP is important because it's altered fundamentally who we look at many many things knowing this. Semiconductor physics for example are all based on discoveries dervived from QP. We know that when confined in a small space (eg orbit of an atom) an electron will not take any energy level, but will orbit at certain distances from the atom, always. These energy levels are discreet and non continous, another difference from classical physics. this is actually how lasers work, electron move from one energy level to another, since they are discreet you always get the same energy out from the same transission.

QP also is important for such things as Quantum teleportation etc etc

Answer 2

So you have a cookout, and you are grilling steaks over charcoals. You look down at the burning charcoal, and you see alot of glowing orange bodies, seemingly giving off a huge amount of heat. Your four year old asks you, "what color are the burning charcoals?" You answer, "They are black. They only look orange because of Planck radiation, i.e. black body radiation". You pull out your solar powered calculator to see when your steaks will be done. The solar cells on your calculator absorb a few quanta of photons, and you are then able to operate your calculator.
These are but two of many examples of how quantum physics impacts your daily life. A great scientist by the name of Earnest Rutherford once said, "all knowledge is either physics or stamp collecting".

Answer 3

Quantum physics deals with forces and particles on a subatomic level. In one sense, it has no effect on our everyday lives, but like all physics, it explains how everyday things work.

If you saw things on a subatomic level, you would see...a lot of space. You would wonder why hands did not just go through things, for example, instead of being able to feel, grasp and push. On a quantum level, the forces exerted by particles explains why that happens.

Answer 4

quantum physics
n. (used with a sing. verb)

The branch of physics that uses quantum theory to describe and predict the properties of a physical system.

Answer 5

If they start telling you about string theory tell them they are talking "religion" not science! Science needs proof, not theories that don't add up, but there is a new fascist school of science that says "if you don't believe what we tell you, you wont pass your exams and/or get funding" So we get endless belief systems passing themselves off as science, which is not doing us any good. And yes, I do believe in evolution, so far as I am able to believe in anything, but "dark matter"? Come on!

Answer 6

quan tum pysics involve the following: theory of relativi ty of eisntien, photoelectric effect. quantum physics describes how electrons surround the nucleus of the atom and other subatomic actions.

Answer 7

WE USE IT IN OUR EVERY DAY WORK, SIMPLY 'PHYSICS OF USAGE'