147,063 reputation
13250412
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 7 months
seen 7 hours ago

Semi retired old time computer nerd who started programming on a Commodore Pet.

Since I'm also active in the Physics forum I should add that I started as a theoretical chemist, moved into solid state photochemistry and finally worked in industry as a colloid scientist. I only became a full time computer nerd in 1997.


May
18
reviewed No Action Needed Does a moving charge have additional (magnetic) energy
May
18
reviewed Leave Closed Difference between maths in physics degree and maths in a maths degree
May
18
reviewed Close A general relativity question about 4-velocity?
May
18
reviewed Close Why and how do electrons move so much?
May
18
comment Why do virtual particles form at black hole horizon?
Also related: Are vacuum fluctuations really happening all the time?
May
18
comment Are magnetism and electricity the same thing?
Hi Sohaib. At the moment your question is too broad to be usefully answered. Can you make it more precise? For example can you pick a particular example of the difference between the two that is puzzling you.
May
18
reviewed Close How does the kinetic energy of a ballerina increase?
May
18
reviewed Leave Open Significance of $U(1)$ extensions of SM
May
18
comment Why do virtual particles form at black hole horizon?
Hawking radiation is not really due to pairs of virtual particles. See for example Black holes and positive/negative-energy particles and Why doesn't Hawking radiation cancel itself out?. In fact virtual particles don't exist in the sense most people think. See Matt Strassler's article.
May
18
answered How does a film with some thickness without reflection alter a wave's phase
May
18
reviewed Reviewed Does the statement “waves only transfer energy, not matter” violate $E=mc^2$?
May
18
reviewed No Action Needed How does a film with some thickness without reflection alter a wave's phase
May
18
reviewed Close momentum and Kinetic Energy
May
18
reviewed Leave Open Potential and Electric field
May
17
reviewed Looks OK Why don't we take this term $D_{\mu}D_{\nu}F^{\mu\nu}$ in Lagrangians?
May
17
reviewed No Action Needed Are hilbert spaces invariant under gauge transformations?
May
17
reviewed Close Equivalent Resistance
May
17
comment Momentum conservation in FRW spacetime
I'm guessing this is related to Valter's answer to your previous question, but it seems to me that Valter's answer answers most if not all of this question too. Can you clarify what you're asking that isn't covered by the previous question?
May
17
answered Seeing in shell reference frame in general relativity
May
17
comment Polarization and Reflection
Also Calculate the polarization vector on reflection or refraction from a dielectric interface, and probably other questions as well.