Near the melting point, how did the actual sublimation rate compare to the theoretical rate based on simple kinetic gas theory, according to NASA-funded study findings?
Answer
The actual rate was substantially lower, up to two orders of magnitude less.
Experimental measurements, corrected using the evaporation coefficient ($ extalpha_e$), revealed that the actual sublimation rate near 0 extdegree C was substantially lower—sometimes up to two orders of magnitude less—than predicted by simple kinetic gas theory.
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