136,387 reputation
9229379
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 4 months
seen 3 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.


Feb
22
reviewed Leave Open What is the best material and design for building a parabolic dish?
Feb
22
reviewed Close Why would a photon striking an electron “make both recoil”?
Feb
22
comment Is the Big Bang instant considered a beginning of all the coordinates of our universe?
No it did not. Read the article I have linked for the details.
Feb
22
comment How do photons mediate (or create) a force?
You might also find Matt Strassler's article interested. It doesn't directly address your question but it is useful background.
Feb
22
comment Is the Big Bang instant considered a beginning of all the coordinates of our universe?
The Big Bang didn't happen at a point
Feb
21
reviewed Close What is a photon?
Feb
21
reviewed No Action Needed Real and imaginary parts of dielectric constant vs refractive index?
Feb
21
reviewed No Action Needed Is thermodynamic equilibrium static or dynamic?
Feb
21
reviewed No Action Needed Holding a photolithography mask (EUV litography) with magnets, to minimize deformation on the photomask?
Feb
21
answered Static electricity experiment
Feb
21
comment Would a black hole's rotational axis precess in orbit around the sun?
A Schwarzschild black hole would not precess because it is (a) spherically symmetric and (b) not spinning. How a Kerr black hole would behave I'm not sure - that seems to me a very interesting question.
Feb
21
revised Can an excited atom have multiple electrons in excited states?
Only one electron in hydrogen
Feb
21
reviewed No Action Needed Special Relativity & QuickSilver from X-Men
Feb
21
answered Can an excited atom have multiple electrons in excited states?
Feb
21
reviewed Approve geometrical optics
Feb
21
reviewed Reject Why gravity decreases as we go down into the earth?
Feb
21
reviewed No Action Needed Can an excited atom have multiple electrons in excited states?
Feb
21
reviewed No Action Needed Why is air a poor conductor of heat?
Feb
21
reviewed Leave Open Why are electromagnetic waves called waves even though they don't travel through a medium?
Feb
21
reviewed Leave Open What can happen when 2.3*10^28 positrons collide with 2.3*10^28 electrons?