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location Seattle, WA
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visits member for 1 year, 6 months
seen 7 hours ago

I participate on this site because I really enjoy physics and because I would like to learn more about what makes an online community work well. Questions often interest me more than answers – although I think the best answers are grounded in observation and experiment. I’m optimistic that there are still many surprising discoveries yet to be made in the physical sciences. I believe physicists should be good citizens. I believe my children will know things about the natural world I can’t even imagine – and will learn them in ways quite different than how I was educated.


Feb
22
revised Gravitational compression in the atmosphere
added 132 characters in body
Feb
22
comment Gravitational compression in the atmosphere
I think the temperature profile of the atmosphere actually approaches the adiabatic gradient. You are correct that solar is the source of heat, but due to convection, the source is not the only cause.
Feb
22
revised Gravitational compression in the atmosphere
geophysics tag added
Feb
22
answered Gravitational compression in the atmosphere
Feb
22
revised How does the construction of a hydrophone differ from a microphone?
added 271 characters in body
Feb
22
comment How does the construction of a hydrophone differ from a microphone?
It's ok to think like an engineer (sometimes) :)
Feb
22
asked How does the construction of a hydrophone differ from a microphone?
Feb
22
answered The physics of sound boards
Feb
21
accepted How do wind turbines cause lightning?
Feb
20
comment How do wind turbines cause lightning?
Good explanation of what the phrase "...outrun the corona.." was referring to. I had not thought that an ionization layer dampens the electric field and might become thinned by flow around the blade.
Feb
20
asked How do wind turbines cause lightning?
Feb
12
comment Does the foam on top of boiling maple sap affect the rate of evaporation?
Old timers are notoriously unreliable :) I'd guess it actually makes no difference.
Feb
8
awarded  Custodian
Feb
6
comment Liquid with freezing point above 0 Celsius that could be use at ice rinks
Synthetic ice technology is already in use in places such as Disneyland- but water is much likely less expensive.
Feb
4
comment Considerations and questions for a DIY heatpipe, how to choose a working fluid?
My first job was with an outfit that built heat pipes. Methanol was used.
Feb
3
answered Can stress be observed directly?
Feb
1
comment Speed of sound in non-newtonian fluids
@simplelikeanegg shows below that the velocity of sound waves in a fluid doesn't depend upon viscosity. But as aside, seismic waves traveling through rock are affected by non-linear elastic moduli.
Feb
1
answered Why is acceleration expressed as m/s/s?
Jan
31
answered Tension in string due to surface tension
Jan
31
comment Determining a person's sight from his speech
Puzzles can be cool, but if I needed to determine if someone needed eyeglasses I'd ask the to read an eye chart. I think you have another way in mind.