165 reputation
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bio website whereofonecannotspeak.wordpre…
location Brighton, United Kingdom
age
visits member for 2 years, 5 months
seen Apr 13 at 15:44

Jun
23
comment Virtual photons, what makes them virtual?
@Qmechanic Thanks. The end of Arnold Neumaiers answer addresses my question directly, though his opinion seems to be rather controversial.
Jun
23
asked Virtual photons, what makes them virtual?
Jun
17
comment Is it possible to increase refractive index at lower densities?
My intention was to ask about the change in density for one material, but I do like the reference.
Jun
17
comment Is it possible to increase refractive index at lower densities?
Ha! I can't get the paper right now, but I'm guessing the collection of points (first figure) are made with different materials, or at least different phases, right?
May
23
comment Quantum mechanics and everyday nature
Also, this is basically why colour vision doesn't work at night.
May
23
comment Quantum mechanics and everyday nature
Point is, there is plenty of isomerisations caused by the blackbody radiation, it's just background that we filter out.
May
23
comment Quantum mechanics and everyday nature
Whilst the electronic transition of the chromophore molecule does require a specific band of energy, this is not the only mechanism for isomerisation. The other major source is thermal (transition energies of infrared radiation). Our eyes are sensitive to it, but not very. Most thermal fluctuations do nothing, and there are many more due to internal processes than external IR. They eye itself absorbs a lot of incoming IR and to observe a difference one would need to have enough infrared radiation to significantly warm your retina (quickly). We don't see IR because of the signal/noise ratio.
Nov
24
awarded  Custodian
Nov
24
accepted The Fraunhofer Measure
Nov
24
reviewed Edit suggested edit on The Fraunhofer Measure
Nov
24
revised The Fraunhofer Measure
I think you made a mistake in calculating the conversion.
Nov
24
comment The Fraunhofer Measure
@JasonDavies oops wrong way round :)
Nov
24
comment The Fraunhofer Measure
It's from exactly the same area of literature, so it makes sense. Oh, and it says K is Mrs Maxwell (J is Mr)
Nov
24
revised The Fraunhofer Measure
deleted 2 characters in body
Nov
24
asked The Fraunhofer Measure
Nov
22
asked Is it possible to increase refractive index at lower densities?
Nov
11
comment Does the Higgs Mechanism contradict Entropic Gravity?
@MitchellPorter I really like the Visser paper, it's really clear and measured.
Nov
11
accepted Does the Higgs Mechanism contradict Entropic Gravity?
Nov
11
awarded  Scholar
Nov
11
comment Does the Higgs Mechanism contradict Entropic Gravity?
Yes, good point, well made.