Greg - Celestron SkyScout 90mm refractor & planetarium
--------------------- --------------------- "Nothing exists but atoms and empty space. Everything else is opinion." Titus Lucretius Carus 99-55 B.C.
"After the Laws of Physics, everything else is opinion" -Neil deGrasse Tyson
Elmira-Corning Astronomical Society
"Scientists aren't perfect, just peer reviewed.""Eye of Sauron Observatory", featuring "Sauron's Other Eye", 16" dob, conical Royce mirror.
Quote:And then, applying those effects to 93 million miles of distance; would the inverse square and whatever other effects there are moderating sound, be sufficient to overcome the immense noise of the sun?
Orion XT12i with Swayze-refigured primary & Protostar secondary
Televue NP101 refractor
William Optics Megrez 90 refractor
Universal Astronomics Deluxe Mounts
Quote:If I had a titanium tongue 1AU long what would the sun taste like????
Quote:Helioseismology is rather like trying to understand how a piano is built from the sounds that it makes when you drop it down a flight of stairs.
Quote:Of course, if the inner solar system were to be filled with air at a pressure of 1 atmosphere, the mass of a 1AU diameter sphere would be 2 * 10^33 kg, or 1,000 times the Sun's mass. That gas would quickly collapse down to the Sun, increasing its mass by a factor of perhaps 200, the remaining gas then being blown out of the solar system.
Dell Axim X5 400Mhz PPC pocket stars 5.12 7x35/10x50/15x70 Bino's
At the Gym... Spudtastic! Joined: 11/26/03 12:23 AMPosts 25,542
Quote:At the red giant stage, the outer envelope is an even better 'vacuum' than the photosphere is now. And of course the Earth would be flying through that thin gas at near 30 km/s. What would be the sound speed in the Sun's thin envelope? How efficiently is sound propagated?
Quote:Sound travels at 750 mph from 92 million miles...
<Insert droll quotation or ridiculous equipment list here>
Quote:(Pressure is relevant since it limits the amplitude of sounds that look like sine waves - the pressure cannot exceed 2x the ambient pressure, since it cannot drop below 0, but an impulse sound ("bang") does not have this limit.)
Quote:Quote:(Pressure is relevant since it limits the amplitude of sounds that look like sine waves - the pressure cannot exceed 2x the ambient pressure, since it cannot drop below 0, but an impulse sound ("bang") does not have this limit.)Maybe someone could explain to me "sounds that look like sine waves"? The context here suggests that compression is somehow balanced with rarefaction. Or perhaps periodic is meant?
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