What does E=mc^2 mean? How can it be used in an example?

filegraphy
Messages
93
Reaction score
0
I was trying to be more clear on how this equation works. I appreciate any help.
 
Physics news on Phys.org
filegraphy said:
I was trying to be more clear on how this equation works. I appreciate any help.

A much better expression is :

\Delta E=c^2 \Delta m

The above tells you that even for a very small variation of mass \Delta m one gets a huge variation of energy \Delta E due to the multiplication by the huge number c^2.
As for applications: nuclear power plants.
 
Thanks. I will work with that equation. I appreciate it.
 

Thread 'I don't see how a black hole's event horizon can be crossed'

OK, so this has bugged me for a while about the equivalence principle and the black hole information paradox. If black holes "evaporate" via Hawking radiation, then they cannot exist forever. So, from my external perspective, watching the person fall in, they slow down, freeze, and redshift to "nothing," but never cross the event horizon. Does the equivalence principle say my perspective is valid? If it does, is it possible that that person really never crossed the event horizon? The...
View full post »

Thread 'Question about Parallel Transport'

In this video I can see a person walking around lines of curvature on a sphere with an arrow strapped to his waist. His task is to keep the arrow pointed in the same direction How does he do this ? Does he use a reference point like the stars? (that only move very slowly) If that is how he keeps the arrow pointing in the same direction, is that equivalent to saying that he orients the arrow wrt the 3d space that the sphere is embedded in? So ,although one refers to intrinsic curvature...
View full post »

Thread 'Trying to calculate proper time of worldlines using rotating frames'

So, to calculate a proper time of a worldline in SR using an inertial frame is quite easy. But I struggled a bit using a "rotating frame metric" and now I'm not sure whether I'll do it right. Couls someone point me in the right direction? "What have you tried?" Well, trying to help truly absolute layppl with some variation of a "Circular Twin Paradox" not using an inertial frame of reference for whatevere reason. I thought it would be a bit of a challenge so I made a derivation or...
View full post »

Similar threads

I E=mc^2 and acceleration
Replies
26
Views
2K
I Deriving e=mc^2, how is it possible?
Replies
2
Views
1K
I Uncovering a Decent Proof of E=mc^2
Replies
14
Views
2K
I Discover the Relationship Between Mass and Energy in Electromagnetic Fields
Replies
8
Views
2K
I Real life example of the energy contained at E=γmc^2
2
Replies
64
Views
5K
B What is m in Kinetic Energy? Relativistic mass or Rest mass?
2
Replies
55
Views
5K
A Deriving Acceleration in Gravity from E = mc^2
Replies
7
Views
1K
B Where did the 1/2 go in E=mc^2?
3
Replies
124
Views
16K
Does E in E=mc^2 Include Gravity?
Replies
1
Views
1K
B Does E=mc^2 apply to gravitational potential energy?
2
Replies
62
Views
6K

Hot Threads

Recent Insights

Back
Top