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location Seattle, WA
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visits member for 1 year, 9 months
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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
14
answered what determines the wavelength of waves on the open ocean?
Mar
14
revised what determines the wavelength of waves on the open ocean?
these really should be identified with geophysics and oceanography tags
Mar
13
comment If a planet were cut in half but stayed hemispherical, how hot would the ocean on the flat side be?
I think questions about hypothetical game situations probably aren't covered here. The moderators will most likely close this unless you can pose your question for a real physical situation.
Mar
10
reviewed Approve suggested edit on Do we stand on the earth because of Newton's third law?
Mar
9
accepted Are leptons, baryons and energy the only products of radioactive decay?
Mar
7
asked Are leptons, baryons and energy the only products of radioactive decay?
Mar
7
comment Meteorite from Mars?
Hard to imagine a process that would lead to such 'noise.' Note that the first four elements are 'noble gasses' - these they do not chemically react with other elements to form compounds that might alter there abundance in the sample. I think @DavePhD is still correct to say (even 15 years later) that meteorite-geochemists think the Mars hypothesis is highly probable.
Mar
7
comment How is this process not quasi-static yet reversible?
I think your question would be much easier to understand if you included a drawing of the system you are describing.
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