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| bio | website | ratsauce.co.uk |
|---|---|---|
| location | Chester, United Kingdom | |
| age | 52 | |
| visits | member for | 2 years, 4 months |
| seen | 1 hour ago | |
| stats | profile views | 3,096 |
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.
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Apr 30 |
comment |
Would a phone move upon vibration in a completely uniform situation? @OllyPrice: I use the Drawing app in Google Drive to create my drawings. I screenshot the drawings and save them as a GIF, then insert the GIF into my posts. Google Drawing is rather basic, but it's fine for the sort of diagrams I need for this site. |
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Apr 29 |
revised |
Orbits within a $-\vec{r}$ field Interactions are more frequent than once a week |
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Apr 29 |
answered | Heisenberg's uncertainty and $0 K$ temperature |
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Apr 29 |
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Stuff can't go at the speed of light - in relation to what? If something is receding from us faster than light it is causally disconnected from us. We and it will never interact. |
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Apr 29 |
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Schrödinger equation for a harmonic oscillator The energy levels are spaced an energy $\hbar\omega$ apart, but the ground state has energy $\hbar\omega$/2. Your expression for $W$ gives these energies. The solutions for the QHO are Hermite polynomials, and their derivation is not particularly simple. See the Wikipedia article for the gory details: en.wikipedia.org/wiki/Quantum_harmonic_oscillator |
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Apr 29 |
answered | Stuff can't go at the speed of light - in relation to what? |
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Apr 28 |
revised |
The effects of heat on gravitational fields Correct typo |
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Apr 27 |
answered | What limits the maximum sustainable surface charge density of a sphere in space? |
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Apr 27 |
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How universal gravitation falls short Agreed. Readers should look at the calculation I linked and the comments to it if they want to really understand what's going on. |
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Apr 27 |
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Entropy / speed relationship in vehicle The loss of performance of an engine with age is due to mechanical wear, and it's not obvious that this can be described by entropy. |
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Apr 27 |
answered | How universal gravitation falls short |
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Apr 27 |
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Can thought experiments qualify as actual research? The Quantum Suicide/Immortality thought experiments are intended to examine some of the consequences of the Many Worlds interpretation of quantum mechanics. They are perfectly valid experiments, though it isn't clear to me how much they tell us. |
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Apr 26 |
revised |
Can thought experiments qualify as actual research? edited body |
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Apr 26 |
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Must neutron speed and diffusion speed be comparable for neutron scattering experiments to be probe atomic diffusion? If the neutron wavelength is too short you won't get any diffraction peaks, so you can't measure the line broadening! |
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Apr 26 |
answered | Must neutron speed and diffusion speed be comparable for neutron scattering experiments to be probe atomic diffusion? |
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Apr 26 |
answered | Relativity Problem Given Rest Length and Proper Time |
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Apr 26 |
answered | Can an electron interact with itself to create interference? |
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Apr 26 |
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UV-VIS spectrometer on Solids Yes it will work for a single crystal |
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Apr 26 |
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Can thought experiments qualify as actual research? There's an old joke: maths departments are cheap to run because you only need pencils, paper and wastebaskets. Philosophy departments are even cheaper because you don't need the wastebaskets :-) |
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Apr 26 |
answered | UV-VIS spectrometer on Solids |
