8,010 reputation
1435
bio website sjbyrnes.com
location Massachusetts
age
visits member for 4 years, 1 month
seen 6 hours ago

1d
asked energy efficiency - dryer vs hang+dehumidifer
2d
comment Is this a good explanation of electron mobility to the layman?
"Electricity moves faster" is sorta nonsensical. Maybe you mean "more electrical current flows"?
Jul
4
answered Is it possible to build a thermoelectric nuclear power plant?
Jul
3
comment Could anyone help explain this current voltage graph for an LED in liquid nitrogen?
I agree, but it's not a complete answer: You still need to explain why heating the LED might lower the voltage drop.
Jun
24
comment Does optical fiber preserve the angles of incoming light?
My description of how endoscopes work was terribly incorrect, it deserved to be downvoted. But I just deleted that part.
Jun
24
revised Does optical fiber preserve the angles of incoming light?
deleted 118 characters in body
Jun
17
revised Modeling stochastic process with frequency-dependent power spectrum
added 33 characters in body
Jun
13
comment What is meant by shot noise?
"The number of photons hitting a photosensitive screen follows a possion distribution..." is a perfect description of shot noise. I'm not sure there's much else to say, you answered your own question.
Jun
4
answered Are reversible adiabatic processes always isentropic?
Jun
2
answered Spin drift velocity?
Jun
2
awarded  Yearling
May
31
comment Faraday's paradox
(It is no coincidence that my opinion agrees with the wikipedia article's; I helped write it that way!)
May
6
revised Is it feasible to transfer energy from power stations to communities via photons instead of electrons?
edited body
May
6
answered Is it feasible to transfer energy from power stations to communities via photons instead of electrons?
May
4
comment Do We Need Maxwell's Equations Since They Fail to Account for An Experimental Fact at Least in One Occasion?
Thanks, I corrected the text.
May
4
revised Do We Need Maxwell's Equations Since They Fail to Account for An Experimental Fact at Least in One Occasion?
respond to comment - perihelion precession & fix typo
Apr
13
reviewed Approve Theoretically, is it necessary that if light passes through a glass slab, its intensity should decrease?
Apr
13
comment By what maximum amount can we concentrate sunlight?
The real limit is that you see the sun in every direction, not just the upper hemisphere of directions. Mirrors do exist! The upper hemisphere alone should only give you 25000x, iirc. You must have made an error but I'm not sure what.
Apr
10
answered Calculating the beating length of the directional coupler
Apr
10
answered image transmission through waveguides