128,704 reputation
8217358
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 2 months
seen 1 hour 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.


Oct
17
answered How is antimatter made?
Oct
17
answered Does Bragg's law take into account atom size? (And should it?)
Oct
17
revised A force is exerted on a body, kinetic energy increases but no work is done by the force. Why?
Typo
Oct
17
reviewed Reject Why particle number operator $\hat{N}$ is $\hat{a}^\dagger\hat{a}$ rather than $\hat{a}\hat{a}^\dagger$?
Oct
17
comment How to understand “always create before we annihilate, not the other way around”?
In my 2003 edition the quote is at the top of page 64
Oct
17
answered A force is exerted on a body, kinetic energy increases but no work is done by the force. Why?
Oct
17
reviewed Looks OK Why don't free electrons fall from metals if shaken?
Oct
17
reviewed Leave Open Why don't free electrons fall from metals if shaken?
Oct
17
revised Line integral calculates work, even though the force from the vector field doesn't cause the movement?
Typo
Oct
17
answered Line integral calculates work, even though the force from the vector field doesn't cause the movement?
Oct
17
reviewed No Action Needed Line integral calculates work, even though the force from the vector field doesn't cause the movement?
Oct
17
accepted How long would it take me to travel to a distant star?
Oct
17
accepted Did the Big Bang happen at a point?
Oct
17
reviewed Leave Open Non-Perturbative feynman diagrams?
Oct
17
comment Uses of Static Electricity
A supercapacitor, like all capacitors, produces a charge separation. The point is that it doesn't transform the energy to another form like, for example, charging a battery where the energy is stored as chemical energy.
Oct
16
comment Is there a null incomplete spacetime which is spacelike and timelike complete?
This paper claims to describe just such a spacetime, however it's behind a paywall.
Oct
16
comment What prevents a star from collapsing after stellar death?
Have you Googled for relevant articles? For example this one on Wikipedia? After reading such articles what precisely are you unclear about?
Oct
16
reviewed Close Newton's Third Law Angular Bouncing
Oct
16
awarded  Good Answer
Oct
16
reviewed Leave Closed Best book for studying Newton's laws, conservation of momentum, etc