What causes body fluids to boil due to ebullism in space vacuum?
Answer
The vapor pressure of the water inside the tissues exceeding the surrounding pressure.
Ebullism is the physical phenomenon where liquids boil at temperatures much lower than their standard boiling point due to a drastic reduction in external pressure. In the near-absolute zero pressure environment of space, the vapor pressure exerted by the water contained within the body's tissues becomes greater than the external ambient pressure. This imbalance forces the liquid water to transition rapidly into vapor, causing the body fluids to boil off immediately upon exposure. This process is distinct from heating; it is a direct consequence of depressurization, which significantly lowers the boiling threshold for water within the biological system.
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