143,585 reputation
13244402
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 6 months
seen 8 mins 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.


1h
comment Question to find distance at which 2 trains will pass each other
Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
1h
answered Why do telescopes move synchronously?
4h
comment Why is the index of refraction different for different wavelengths?
To be fair this is true for most optically transparent materials at visible wavelengths. The refractive index becomes anomalous when the light energy reaches the band gap energy, and for most transparent materials the band gap energy is in the uv.
5h
awarded  Electorate
5h
comment Many cells in parallel
If you connect cells in parallel then the net potential difference depends on the internal resistances of the cells so you need to specify these.
5h
answered Why is the index of refraction different for different wavelengths?
6h
comment Proof of Poisson equation in a gravitational field
I'm voting to close this question as off-topic because it shows insufficient effort
6h
comment Proof of Poisson equation in a gravitational field
Doing an obvious Google search found lots of articles explaining this, including this one of Wikipedia‌​. Are you having problems understanding the derivation? If so, can you extend your question to indicate where the stumbling blocks are?
6h
reviewed Leave Open Why can't we see light travelling from point A to B?
6h
reviewed Approve Strong and weak turbulence
6h
reviewed Reject Why can't we see light travelling from point A to B?
6h
comment Angle sum of triangle in Schwarzchild solution
How are you going to define the straight lines that make up the sides of your triangle? Null geodesics i.e. the lines followed by light rays?
9h
reviewed Leave Closed Would a piece of paper look as big as a small bedroom to an atom?, or bigger?
9h
reviewed Leave Open definition of Hamiltonian in statistics
9h
comment What is extension produced in spring?
Hi Prasenjeet and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
9h
comment Point of getting each other after chasing!
Hi Michaele and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.
10h
reviewed Leave Closed Commutation relation between linear momentum and vector Potential
10h
reviewed Reviewed Induced voltage by dropped magnet?
10h
reviewed Close Quantum Entanglement - How To Interpret
10h
reviewed Close Can something actually be air tight? Sub unit of energy?