143,405 reputation
12244402
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 6 months
seen 10 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.


Apr
10
comment A spin on relativity's twin paradox?
No GR isn't required. See Can a ultracentrifuge be used to test general relativity?. I wish we could knock this canard on the head.
Apr
10
comment The interaction between waves and particles according to their wavelength
See also Why is the sky not purple? as the answers include some nice descriptions of the physics involved.
Apr
10
comment Is it possible to heat plasma to the point where there is no electrical resistance?
@mikuszefski: yes, I've given a simplified description because I thought trying to explain electron-phonon scattering would be too complicated given that the OP is clearly a school student. I also think introducing superconductivity is an unnecessary complication, though of course the student is welcome to look at my answer to Superconductivity reasons (Intutitive) :-)
Apr
10
answered Who can see the event/apparent horizon and Hawking effect?
Apr
10
answered Partial pressures - beyond the concept of point masses
Apr
10
answered Is it possible to heat plasma to the point where there is no electrical resistance?
Apr
10
revised Proof that spacetime interval is invariant
Remove link to pirated book
Apr
10
comment Proof that spacetime interval is invariant
I'm unconvinced the copy of Schutz's book you link to is a legal copy so i've removed the link.
Apr
10
reviewed Leave Open Expectation value of Commutator of Hermitian operators
Apr
10
reviewed Close Pair-annihilation why does it occour?
Apr
10
reviewed Leave Open Are there any scales other than temperature that have different zero points?
Apr
10
reviewed Leave Open Spin operator: tricky proof using gamma matrices
Apr
10
reviewed Close Charge of a moving particle
Apr
10
reviewed Close How can static friction do work?
Apr
10
reviewed Close Relativistic Momentum and Energy - Lorentz Transformations
Apr
10
reviewed Close Do Ampère's and the the Biot-Savart law give different answers for the magnetic field of a circular loop?
Apr
9
comment Why can't I series 5 D Cell Batteries to achieve 7.4 volts?
You might be better asking on the Electrical Engineering Stack exchange
Apr
9
comment The force on the northern hemisphere
Hi Shay, I thought it was a bit too brief for a good answer, but if it works for you I'll post it.
Apr
9
answered The force on the northern hemisphere
Apr
9
reviewed Leave Closed Exam review problem. Weird answer