critical Jeans mass

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• Jeans instability — The Jeans instability causes the collapse of interstellar gas clouds and subsequent star formation. It occurs when the internal gas pressure is not strong enough to prevent gravitational collapse of a region filled with matter. For stability, the …   Wikipedia

• Jeans length — is the critical radius of a cloud (typically a cloud of interstellar dust) where thermal energy, which causes the cloud to expand, is counteracted by gravity, which causes the cloud to collapse. It is named after the British astronomer Sir James… …   Wikipedia

• James Hopwood Jeans — Infobox Scientist name = James Hopwood Jeans box width = image width = 240px caption = giving the 1933 Royal Institution Christmas Lectures birth date = birth date|1877|09|11 birth place = Ormskirk, Lancashire, England death date = death date and …   Wikipedia

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