78,086 reputation
181171
bio website ratsauce.co.uk
location Chester, United Kingdom
age 53
visits member for 3 years, 3 months
seen 10 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.


Dec
17
awarded  gravity
Dec
16
revised Why Inox Steel doesn't interact with magnets?
Correct grammar
Dec
16
answered Does an electric field create a pH gradient?
Dec
16
answered What happens when a black hole dies?
Dec
16
comment Is optical-illusion responsible for Loch Ness monster?
This question appears to be off-topic because it isn't about physics
Dec
16
answered Gravitational Time Dilation with big masses
Dec
16
answered Temperatures at extreme densities
Dec
16
answered Why Inox Steel doesn't interact with magnets?
Dec
16
answered Are images of three-dimensional objects also three-dimensional?
Dec
16
answered Can a glass window protect from heat radiation?
Dec
16
reviewed Close Pressure difference in u tube
Dec
16
reviewed Close Cosmological and gravitational redshift in physics
Dec
16
reviewed Close Wave function of a particle in a gravitational field
Dec
16
comment Light pulses and energy-time uncertainty principle
Richard: in the duplicate question I've posted the envelope function is a gaussian so you have a wave packet. However exactly the same analysis applies when your modulating function is oscillatory, like the removal and replacement of your obstacle. The original frequency spectrum is convolved with the Fourier transform of your modulating function.
Dec
16
comment Light pulses and energy-time uncertainty principle
possible duplicate of Uncertainty and wave-trains
Dec
16
comment Proof that the ground pushes you up
If the force the ground exerted on you and force you exerted on the ground were different it would violate conservation of momentum because your impulse and the ground's impulse wouldn't add up to zero.
Dec
16
reviewed No Action Needed How can a qubit superposition state be written to a quantum register?
Dec
16
comment Proof that the ground pushes you up
When you jump you and the planet you're standing on push each other away. You move far more than the planet does because you're a lot lighter.
Dec
15
reviewed Leave Open What's the difference between work in thermodynamics and mechanics?
Dec
15
reviewed Leave Open Is my grandmother alive for some alien who is located on some place and is moving with some speed?