The interactions in the Universe are governed by four forces (strong, weak, electromagnetic and gravitational).
Physicists are trying to find one theory that would describe all
the forces in nature as a single law.
So far they have succeeded in producing a single theory that describes
the weak and electromagnetic forces (called electroweak force). The
strong and gravitational forces are not yet described by this theory.
FUNDAMENTAL FORCES:
Interaction
|
Relative
Strength
|
Range
|
Mediating
Particle
|
Strong
|
1
|
Short
|
Gluon
|
Electromagnetic
|
0.0073
|
Long
|
Photon
|
Weak
|
10-9
|
Very
Short
|
W,Z
|
Gravitational
|
10-38
|
Long
|
Graviton
|
Source:
- This text is [select one: from, based on content from, derivative from content on] Windows to the Universe® (http://windows2universe.org) © 2010, National Earth Science Teachers Association.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.
- This text is [select one: from, based on content from, derivative from content on] Windows to the Universe® (http://windows2universe.org) © 2010, National Earth Science Teachers Association.
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.