Jeans' Length As Oscillation Wavelength
The Jeans' Length is the oscillation wavelength below which stable oscillations rather than gravitational collapse will occur.
where G is the gravitational constant, is the sound speed, and is the enclosed mass density.
It is also the distance a sound wave would travel in the collapse time.
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Famous quotes containing the words length and/or oscillation:
“To find the length of an object, we have to perform certain
physical operations. The concept of length is therefore fixed when the operations by which length is measured are fixed: that is, the concept of length involves as much as and nothing more than the set of operations by which length is determined.”
—Percy W. Bridgman (1882–1961)
“In almost all climes the tortoise and the frog are among the precursors and heralds of this season, and birds fly with song and glancing plumage, and plants spring and bloom, and winds blow, to correct this slight oscillation of the poles and preserve the equilibrium of nature.”
—Henry David Thoreau (1817–1862)