140,779 reputation
9242395
bio website ratsauce.co.uk
location Chester, United Kingdom
age 54
visits member for 4 years, 5 months
seen 36 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.


31m
comment Can space be destroyed
No-one knows whether the universe is infinite, but if it's finite it must be closed because the universe by definition can't have an edge. Even a finite closed universe has no outside - a finite universe is not embedded in some larger structure.
49m
comment Can space be destroyed
The question I've linked may not seem a duplicate at first glance, but it covers the points you raise.
49m
comment Can space be destroyed
possible duplicate of Did the Big Bang happen at a point?
1h
comment How to emulate 40ft (12 m) of water?
@DrXorile: compressing water by 20% would require a pressure of over 4,000 atmospheres. For comparison, the pressure at the deepest part of the ocean is only around 1,000 atmospheres. While I'm sure a 20% compression can be achieved, this hardly an everyday phenomenon.
12h
reviewed Reject Would you die if you put your hands on a powerline?
12h
reviewed Leave Closed How does a Venturi Injector comply with energy conservation?
12h
reviewed Leave Closed Where does a sparkly (CO$_2$) water bottle have more presure
12h
reviewed Leave Open Optimal wavelength for low IR attenuation under normal atmospheric conditions?
12h
reviewed Leave Open What's the difference between wave equation in PDE form and wave equation in normal form?
12h
reviewed Close How do we deal with air resistance?
12h
reviewed Leave Open Why is universe expanding?
14h
comment How fast can a fluorescent lamp flicker
@Mehdi: oops, that's a typo. At 5hKz one half cycle is 100$\mu$s (I originally wrote ms instead of $\mu$s) and all the lifetimes are consirably greater than this.
14h
revised How fast can a fluorescent lamp flicker
Typo
14h
comment dependence of dipole moment on charge of dipole
Hi Bhawana 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.
14h
answered How fast can a fluorescent lamp flicker
19h
comment Shapes of ionic compound
I'm voting to close this question as off-topic because it should be on the Chemistry Stack Exchange
22h
reviewed Close Difference between Enzo & Gadget astronomy simulation codes
23h
comment Buying books that are out of print
I'm voting to close this question as off-topic because it's about buying books not physics
23h
reviewed Leave Closed Moment of inertia of a connecting rod in a crank-slider mechanism
23h
reviewed Close Spherical representation of field operators of scalar field