143,958 reputation
13244403
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
29
comment space contraction near lightspeed
@JeffLowery: the metric that describes the expanding universe is different again - it's called the FLRW metric.
Apr
28
answered space contraction near lightspeed
Apr
28
reviewed Close Why do we say the universe is expanding faster and faster
Apr
28
reviewed Leave Open Is the concept of infinity valid in physics, beyond its convenience?
Apr
28
comment Double Pipe Heat Exchanger Flow Hot Cold
@Vin: yes, if you're just trying to cool a metal plate then use a single pipe. Well, you might have the pipe branch into lots of smaller pipes to cover the surface of the plate. But it's still just a single water flow system.
Apr
28
answered Double Pipe Heat Exchanger Flow Hot Cold
Apr
28
awarded  Nice Answer
Apr
28
reviewed Approve Chemical Potential at Triple Point
Apr
28
reviewed Close Propagation of incertitude - specific example
Apr
28
reviewed Leave Open space contraction near lightspeed
Apr
28
reviewed Leave Open Heat Equation with In-Depth Radiation Exact Solution
Apr
28
reviewed Close What sort of propulsion technology would allow spaceships to lift off the surface of the Earth and ascend into space like we see in sci-fi movies?
Apr
28
revised Is there a difference between Electric and Electrostatic Field?
Trivial tidying
Apr
28
comment Protons and Neutrons Overshoot Actual Mass?
Hi Arturo, see the question I've linked. This explains why the binding energy is negative. I made exactly the same mistake when I first started studying physics!
Apr
27
comment Can this RC boat work in thoery?
Yes it will work, but (a) not very efficiently and (b) someone else got there first!
Apr
27
reviewed No Action Needed How to derive velocity pressure in English units?
Apr
27
comment Test to determine if universe is infinite or not
@BinaryGeek: yes. Asher's answer is correct. We may one day prove the universe is finite though we're unlikely to find an edge - more likely is that we'd find the universe was topologically closed. We are very unlikely ever to be able to prove the universe is infinite. I don't like saying we'll never prove it because never is a dangerous word!
Apr
27
reviewed No Action Needed Is the flux through A the same as the flux through B?
Apr
27
reviewed Approve rigid-body-dynamics tag wiki
Apr
27
reviewed Approve rigid-body-dynamics tag wiki excerpt