Register to reply

Four forces

by brjense
Tags: forces
Share this thread:
brjense
#1
Mar3-14, 09:37 PM
P: 8
Why only four forces? Are there more and we just can't feel them or experience them. What would they be?
Phys.Org News Partner Physics news on Phys.org
Step lightly: All-optical transistor triggered by single photon promises advances in quantum applications
The unifying framework of symmetry reveals properties of a broad range of physical systems
What time is it in the universe?
jtbell
#2
Mar3-14, 09:56 PM
Mentor
jtbell's Avatar
P: 11,782
How would we know there are more than four forces if we can't observe them experimentally?
brjense
#3
Mar3-14, 09:59 PM
P: 8
Maybe there is only one force only relative to charge and mass?

Drakkith
#4
Mar3-14, 10:58 PM
Mentor
Drakkith's Avatar
P: 11,884
Four forces

Quote Quote by brjense View Post
Maybe there is only one force only relative to charge and mass?
What about color and flavor?
http://en.wikipedia.org/wiki/Flavor_(particle_physics)
http://en.wikipedia.org/wiki/Color_charge
ChrisVer
#5
Mar4-14, 03:44 AM
P: 913
In my opinion, the question should have been if there was once a single force (in a unified theory) how did we end up with 4 forces instead of some other set? Or, in other words, why did nature choose the Standard Model as the subgroup it would be spontaneously broken to....
If there were more forces, we would have seen them?


Register to reply

Related Discussions
Fictitious Forces ⇔ Constraint Forces? (re: D'Alembert's Principle) Classical Physics 4
Static Equilibrium / Normal Forces / Braking Forces on tires Introductory Physics Homework 6
Exact forces (not net forces) involved in pushing a line of boxes? Introductory Physics Homework 7
Two forces at 45 pull an object distance of 14. What is work by both forces? Introductory Physics Homework 3
Capillary forces, intermolecular forces and surface tension questions Classical Physics 2