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Old July 21st 03, 05:51 AM
David Knisely
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Default Mars Dust

Bert posted:

David you said the sound waves on Mars would travel the same way "though
the air" Earth's air atmosphere is a lot different than Mars.


Completely irrelevant. You had asked, "I wonder how sound travels on
Mars?". You *did NOT* ask about how "well" sound travels, nor did you
ask at "what speed" the sound travels, but only "how sound travels on
Mars". In doing this, you seem only to want to know *the mechanism*.
Sound waves are compression waves. They can travel through solids,
liquids and gasses. The speed and intensity vs. distance from the
emitter are different with different gasses, but they travel in exactly
the same manner by going through the atmosphere as the gas conducts the
sound waves. The sounds on Mars would propagate very poorly due to the
low density of the atmosphere, but they would propagate using the same
mechanism that sound propagates on Earth, and would be detectable
provided they were loud enough.

Just the
fact that Mars only has 1% as compared to earth's and that 1% is 93% CO2
would make a big difference to a tuning fork.


The mass of the Martian atmosphere is *not* 1% of the Earth's atmosphere
(it is 0.7 percent). The atmospheric pressure on Mars varies from
around 4 millibars (4% of the Earth's mean pressure at sea level) to as
high as 11 millibars (about 1.09% of the Earth's mean pressure at sea
level) depending on where you are and what the barometric pressure is at
any given time. The composition of the Martian atmosphere is over 95%
Carbon Dioxide (not 93%).

You are very close to being "grossly wrong"


Not nearly as close as you are, as you are fairly consistent about being
inaccurate or just plain wrong in your postings.
--
David W. Knisely
Prairie Astronomy Club:
http://www.prairieastronomyclub.org
Hyde Memorial Observatory: http://www.hydeobservatory.info/

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