Comparing Gravity and Electromagnetism

imi
Messages
5
Reaction score
0
Am interested in comparing gravity with electromagnetism. What are the differences in properties between the forces and how are they alike?
 
Physics news on Phys.org
And the Gravitational force is about 10^42 times weaker than electromagnetism!
 
Thanks for your replies.
 
Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

Thread 'Motional EMF in Faraday disc, co-rotating magnet axial mean flux'

So here is the motional EMF formula. Now I understand the standard Faraday paradox that an axis symmetric field source (like a speaker motor ring magnet) has a magnetic field that is frame invariant under rotation around axis of symmetry. The field is static whether you rotate the magnet or not. So far so good. What puzzles me is this , there is a term average magnetic flux or "azimuthal mean" , this term describes the average magnetic field through the area swept by the rotating Faraday...
View full post »

Thread 'Why measure the speed of light in one direction?'

It may be shown from the equations of electromagnetism, by James Clerk Maxwell in the 1860’s, that the speed of light in the vacuum of free space is related to electric permittivity (ϵ) and magnetic permeability (μ) by the equation: c=1/√( μ ϵ ) . This value is a constant for the vacuum of free space and is independent of the motion of the observer. It was this fact, in part, that led Albert Einstein to Special Relativity.
View full post »

Similar threads

I Force exerted by an iron core electromagnet on a ferrofluid
Replies
2
Views
2K
I Would an BLDC motor with rotor winded like a mirrored stator rotate?
Replies
1
Views
953
The difficulty of learning Electromagnetism vs Classical Mechanics
Replies
1
Views
3K
I How to Measure the Energy of an Electromagnetic Wave?
Replies
4
Views
2K
I Two ways of constructing electromagnetism, which is correct?
Replies
7
Views
1K
I Behaviour of EM-wave near a non-resonant antenna
Replies
2
Views
686
B Why is there induced current in a DC motor?
Replies
2
Views
931
I Can Electromagnetic Levitation Make an Entire Apparatus Go Skyward?
Replies
3
Views
1K
Electric Charge is basic property of matter or subatomic particles ?
Replies
4
Views
1K
When was it proven that light is an electromagnetic wave?
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top