PDA

View Full Version : So what are the 4 fundamental Forces

ChromeStar
2004-Nov-18, 04:37 PM
So what is gravity how does it work?
How does electromagnatism work?
How do they work and what are the Weak and strong Nuclear forces?

Just food for thought, they are on going debates

bossman20081
2004-Nov-18, 06:07 PM
Try this link (http://hyperphysics.phy-astr.gsu.edu/hbase/forces/funfor.html) for the fundamental forces. Ive found it very informative, but make sure you explore the site thoroughly.

Betelgeuse
2004-Nov-18, 06:58 PM
Gravity: Gravity is a common force. Newton was the first person to study it seriously, and he came up with the law of universal gravitation:

"Each particle of matter attracts every other particle with a force which is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

Gravitational force = (G * m1 * m2) / (d2)

Electromagnetism: This is the force experienced by electrically charged particles due to the electromagnetic field. It is called the "electromagnetic force". Albert Einstein&#39;s 1905 paper on the "photoelectric effect" was the very first sign of classical electromagnetism. It suggested that light could exist as meerly discrete particle-like things, which are now known as photons.

Weak Nuclear Force: This involves a "radioactive decay". It is characterized by a slow nuclear reaction rate.

Strong Nuclear Force: In comparison to the weak nuclear force the strong nuclear force reacts in a very short time.

Hope this helps you,
Regards
Rigel
:)

StarLab
2004-Nov-18, 10:04 PM
These are the four proposed forces that split at the time of the Big Bang. The E/M force can apply to both magnetic fields and electric fields, because Mawell discovered they are essentially the same thing (this was slightly before Einstein, by the way).

Gravity is not just a common force. It is the weakest, yet it exerts force into infinity.
It is hypothesized that the "carrier" boson for the gravitational force is the graviton. Proof of its existence has not been confirmed yet.
The other bosons are:
E/M: the photon, and anything on the E/M spectrum
Weak force:W, Z+, and Z-
Strong: "gluons" (holds quarks together).
The equation for gravity is similar to the one for magnetic fields (though I do not remember that equation).
It should be noted that the strong force has a weak range: it is strong enough just to hold nuclei together.
The E/M force has infinite force, yet semi-stong range.
The weak force is seldom relevant to nature as we know it.