99,366 reputation
4145255
bio website ratsauce.co.uk
location Chester, United Kingdom
age 53
visits member for 3 years, 7 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.


Mar
26
revised 3 to 3 scattering in massless $\phi^4$ theory
Typo
Mar
26
comment Attraction and repulsion of charge?
I struggle to see how this answers the question.
Mar
26
comment Attraction and repulsion of charge?
user43291: I suspect you'll find the question I have linked rather hard going, but I'm afraid that's inevitable if you really want to understand the nature of charge and the interactions between charges.
Mar
26
comment Attraction and repulsion of charge?
possible duplicate of Why do same/opposite electric charges repel/attract each other, respectively?
Mar
26
reviewed Close Question about two masses connected by a spring
Mar
26
reviewed Approve suggested edit on Perturbative Quantum Mechanics
Mar
26
reviewed Approve suggested edit on Analyzing the motion of a ball rolling without slipping inside a hemispherical bowl
Mar
26
comment How can photons interact with anything?
I think these are best posted as new questions
Mar
26
reviewed Approve suggested edit on Gases at different pressures reaching uniform pressure
Mar
26
reviewed Leave Closed Block on block with friction
Mar
26
reviewed Leave Closed Intro to Solid State Physics
Mar
26
reviewed Close Acceleration of chairlift
Mar
26
reviewed Close What are the the characteristics of a standing wave?
Mar
26
comment How can photons interact with anything?
You say from its frame of reference, but the transform to and from its frame of reference is singular so no we can't make such statements about it.
Mar
25
comment Direction of future time cone inside Schwarzschild horizon
@HanXu: $r$ increases outwards, so $dr/dt > 0$ means the object is travelling outwards.
Mar
25
revised Direction of future time cone inside Schwarzschild horizon
Few extra notes
Mar
25
revised Direction of future time cone inside Schwarzschild horizon
Add note on light cones
Mar
25
answered Direction of future time cone inside Schwarzschild horizon
Mar
25
answered How can photons interact with anything?
Mar
25
comment Where and how exactly does string theory and Q.E.D. use zeta function regularization?
possible duplicate of Critical Dimension of Bosonic Strings and Regularization of $\sum_{n=1}^\infty n$