136,402 reputation
9229379
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 4 months
seen 5 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
3
reviewed Leave Open Obtaining a copy of R. W. O'Brien's PhD thesis
Feb
3
answered Obtaining a copy of R. W. O'Brien's PhD thesis
Feb
3
reviewed Close Does gravity get stronger with compression of matter?
Feb
3
reviewed Leave Open Estimate the persistence length of a rubber band
Feb
3
reviewed Leave Open What is the optimum elevation angle for my 3000W heater?
Feb
3
awarded  Guru
Feb
2
awarded  Enlightened
Feb
2
reviewed Approve Why do most formulas in physics have integer and rational exponents?
Feb
2
reviewed Close What is the difference between the groups $PSU(N)$ and $SU(N)$?
Feb
2
awarded  Nice Answer
Feb
2
reviewed No Action Needed Continuity of electric field
Feb
2
reviewed Close Hockey puck collision
Feb
2
comment Flow of electrons in electric current
The question Are free electrons in a metal really free is related and might make interesting reading.
Feb
2
revised Hawking radiation (black hole evaporation)
edited tags
Feb
2
reviewed No Action Needed Partial derivative of Helmholtz free energy from entropy and internal energy
Feb
2
comment Possible Lack of Invariance in Two Inertial Reference Frame Scenarios
Change in kinetic energy is not frame invarient
Feb
2
comment The order of seeing event in different spacetimes
@quarkleptonboson: the terms spacelike and timelike refer to the separation between spacetime points. Two spacetime points are spacelike separated if you would need to travel faster than light to get from one event to the other. They are timelike separated if you can get between the events travelling slower than light, and they are null separated if you get between them travelling at exactly the speed of light.
Feb
2
reviewed Leave Open Expectation value with plane waves
Feb
2
reviewed Leave Open Is simulating the entire universe possible?
Feb
1
reviewed Looks OK Can special relativity be deduced from $E=mc^2$?