140,862 reputation
9242395
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 5 months
seen 4 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.


4h
reviewed Leave Closed Can I teach myself physics (LQG specifically)?
7h
comment Can I teach myself physics (LQG specifically)?
I'm voting to close this question as off-topic because it's about learning physics rather than physics itself
7h
reviewed Reviewed Vector addition
7h
comment Vector addition
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.
7h
reviewed No Action Needed Can I teach myself physics (LQG specifically)?
7h
reviewed Leave Open How to get the asymptotic expression of DOS near Van Hove singularity
7h
comment Does gravitational field has gravitational mass?
@CuriousOne: I had no doubt you knew about gravitational self-energy (my comment was targeted at a wider audience) but your comments tend to be cryptic and of little help to less informed readers of this site.
8h
reviewed No Action Needed Two math methods apply the same loop integral lead different results! Why?
8h
reviewed Leave Open current splitting in the presence of superconductors
8h
reviewed Leave Open Does gravitational field has gravitational mass?
8h
comment Does gravitational field has gravitational mass?
@CuriousOne: I assume John is referring to the gravitational self energy. This can't be localised. It is normally described by the Einstein pseudo-tensor.
8h
comment Does the uncertainty principle affect event horizons?
@zooby: it is unrelated. See this question and answers.
8h
comment Is the stress energy tensor continuous at the interface between an object and vacuum?
If there is an error in my answer please say so. Just downvoting with no comment does nothing to improve either this site or my knowledge of physics.
9h
reviewed No Action Needed Can a Bell state measurement be described in the Von Neumann measurement scheme?
9h
reviewed No Action Needed What is a safe viewing distance for nuclear fireworks?
9h
reviewed No Action Needed Water well fluid dynamics
9h
reviewed No Action Needed Two questions about Variational Method of quantum mechanics
9h
reviewed Close How much force does it take to move the Earth?
9h
reviewed Close What is a safe viewing distance for nuclear fireworks?
9h
reviewed Close Is it possible to use electromagnetic waves to power an entire city