Quantum theory...?

Question

My name is Shaumik Daityari. I am an Indian. I will be 14 on the 25th of this month. I study
in ninth standard. I am enjoying my summer break in my aunt's house. I will be 14 on the 25th of this month. I study
in ninth standard. I am enjoying my summer break in my aunt's house. But I didn't understandthe quantum theory. If you could
explain it to me in a very simple language with pictures, I will REALLY BE GRATEFUL TO YOU... Please
mention your e-mail address and your nationality as I have never mixed with others. If you
are an Indian, no need to mention your nationality. Please contact me.

Answer 1

Quantum Theory ----

--- body of physical principles designed to account for subatomic phenomena. The theory also has found applications in other branches of physics. The theory arises from the attempt to combine the principles of quantum mechanics with those of relativity in an effort to describe processes such as high-energy collisions in which particles may be created or destroyed.

The prototype of quantum field theories is quantum electrodynamics (QED), which describes the interaction of electrically charged particles via electromagnetic fields. Here, electric and magnetic forces are regarded as arising from the emission and absorption of exchange particles or photons. These can be represented as disturbances of electromagnetic fields, much as ripples on a lake are disturbances of the water. Under suitable conditions, photons may become entirely free of charged particles; they are then detectable as light and other forms of electromagnetic radiation. Similarly, particles such as electrons are themselves regarded as disturbances of their own quantized fields. Numerical predictions based on QED agree with experimental data to within one part in 10,000,000 in some cases.

There is a widespread conviction among physicists that other forces in nature—the weak force responsible for radioactive beta-decay; the strong force, which binds together the constituents of atomic nuclei; and perhaps also gravitational forces—can be described by theories similar to QED. These theories are known collectively as gauge theories. Each of the forces is mediated by its own set of exchange particles, and differences between the forces are reflected in the properties of these particles. For example, electromagnetic and gravitational forces operate over long distances, and their exchange particles (the photon and the graviton) have no mass. The weak and strong forces operate only over distances shorter than the size of an atomic nucleus. They are mediated by massive particles, which can travel only short distances during the exchange process.

It is also hoped that all the forces can be encompassed in a single gauge field theory. In such a unified theory, all the forces would have a common origin and would be related by mathematical symmetries. The simplest result would be that all the forces had identical properties. A mechanism called spontaneous symmetry breaking is used to account for the observed differences.

A unified theory of electromagnetic and weak forces already has considerable experimental support; it is likely that this theory can be extended to include the strong force. There also exist theories that include the gravitational force, but these are more speculative.


Note: The answer is based on Encyclopedia Britannica DVD


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USA

Answer 2

I can't explain it to you myself, but I can point you to a very readable, affordable book. The Elegant Universe by Brian Greene is excellent for learning about high level physics without the jargon. I haven't actually gotten to the part on quantum mechanics yet, but I'm most of the way through his part on relativity. It's incredibly easy to understand.

It's also pretty affordable, at $15 US.

I highly recommend reading it if you're interested in that kind of thing.

Answer 3

Quantum mechanics is a fundamental branch of theoretical physics that replaces Newtonian mechanics and classical electromagnetism at the atomic and subatomic levels. It is the underlying mathematical framework of many fields of physics and chemistry, including condensed matter physics, atomic physics, molecular physics, computational chemistry, quantum chemistry, particle physics, and nuclear physics. Along with general relativity, quantum mechanics is one of the pillars of modern physics.

Answer 4

I would like to put it as simply as my high school physics teacher:

"Anyone who claims that they understand Quantum Theory is either lying or stupid."

I would be interested in a clear explanation, too.

Answer 5

quantum theory is the theory of how particles behave on the smallest level (smaller than atoms)

Answer 6

I don't pretend to understand it but from what I remember reading is: a single light particle a "photon" is a quanta.

valland55 AT iinet.net.au

Answer 7

I was looking for a research site we used last year, but I could not find it for you.

Take a look at this:

http://search.yahoo.com/search?_adv_prop=web&x=op&ei=UTF-8&fr=fp-top&fr2=op&va=Quantum+theory&va_vt=any&vp=8th+grade&vp_vt=any&vo=explained+defined&vo_vt=any&ve=plan+classroom+teacher+politics+sports&ve_vt=any&vd=all&vst=0&vf=all&vm=i&fl=0&n=10

http://search.yahoo.com/search?_adv_prop=web&x=op&ei=UTF-8&fr=fp-top&fr2=op&va=Quantum+theory&va_vt=any&vp=8th+grade&vp_vt=any&vo=explained+defined+&vo_vt=any&ve_vt=any&vd=all&vst=0&vf=all&vm=i&fl=0&n=10

If I find additional information, I will amend my answer.

Good Luck.

Answer 8

your 14 you shouldnt care.I hardly understand it myself and im a physics master.

Answer 9

I'm a Canadian and my email address is [e-mail]