Recent content by DeG

Awesome, thanks for the clarification

This all makes sense. Thanks a lot everybody. @Ratch - I am specifically referring to power distribution systems and how the utility company has to deliver X amount of power to a customer, but if the customer has an inductive load then the customer only uses X*cos(phase angle) of power (i.e...

I know that the phase angle between I and V determines the power factor (cos(angle)) and thus the fraction of power supplied that can do real work. Also that a phase angle of 90 degrees means that none of the delivered power can do real work in the system. What happens when the phase angle goes...

When an em-wave red shifts due to leaving a gravitational field it loses energy, right? Where does that energy go, into gravitational potential energy of the photon? If so does this mean that the photon can "fall" back on the gravitating body to reclaim this energy? What happens to the energy if...

Alright, let me see if I understand this. Within the EH all light cones bend inward making it impossible for and light within the EH to reach even the Schwarzschild radius. Whereas light outside of the EH does have the ability to escape the gravitational field. Does this mean the light cones of...

I see. Thank you.

There's something bothering me about the event horizons of black holes. The Schwarzschild radius (as I see it) is basically the distance from a center of mass at which the escape velocity is the speed of light. The way escape velocity is defined though is the speed a body must have to "reach...

You say only in the rest frame of the box, does this imply that it wouldn't take a force to "accelerate," i.e change the motion, the photons in the box if you pushed the box? In other words, to someone moving the box it would seem as though the mass of the system is just the mass of the box, not...

Can anyone supply me with the mathematics behind the energy gain/ loss as a photon travels through a gravitational potential difference?

Could anyone give me the mathematics behind the blue/red shift of light as it travels through a gravitational potential difference?

Does the electric field component of em waves not interact with electric fields and likewise with the magnetic component? Also, could I get the mathematics behind the blue and/ or red shift of light do to gravitation?

The poor man who started this post just wanted a simple (or as simple as can be) explanation of electromagnetic fields and all I've seen is a bunch of huff and bother about our understanding of these fields. I don't know exactly the order the following discoveries were made, but this is what I...

Are photons effected by traveling through electric or gravitational potential differences? If so, how so?

"X has momentum, which only means it obeys conservation laws. X is affected by gravity, which only means that it has energy as per general relativity." - Pengwuino "However photons do have a relativistic mass given by E=mc2." - I Like Serena If it's true we measure the momentum of light via...

Nice, thank you very much. That all makes a lot of sense.