2,531 reputation
422
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location Seattle, WA
age
visits member for 2 years
seen Oct 7 at 3:30

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.


Mar
4
comment Meteorite from Mars?
Good answer, thanks for including those references. I am unable to vote up, but will retry later. Because many of the readers on this forum are not chemists, you might also want to include an explanation that the evidence is a combination of major element, trace element, and isotopic evidence.
Mar
4
awarded  Enthusiast
Mar
2
revised about the rotation of the earth and gravity, when all continents were merged
typo
Mar
2
comment The physics of sound boards
Yes but a sound board would have multiple harmonics.
Mar
1
answered about the rotation of the earth and gravity, when all continents were merged
Mar
1
comment about vosges landscape and natural water transportation
You basically have the right idea. Horst and graben terrains are caused by parallel faults in the Earth's crust, these are German words and apply to the Rhine valley. Anticline and Synclines refer to folds in the crust. Not familiar with structural geology of the Vosges Mountains, but you might try searching the web for resources on Tectonic Geomorphology.
Feb
25
comment What are functions of a complex variable used for in physics?
"Few things in life work as well as a Laplace transform" I learned this when I had to understand the underlying physics of seismometer design. Laplace transforms can transform a problem of in differential equations into a problem in algebra. Cool.
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