Lecture 2 – Molecules in motion

From the 1979 lecture programme:

How does air exert its pressure? What does that pressure suggest concerning air molecules? See the effect of air molecules bombarding tiny visible victims. We shall measure the spacing of molecules in air; also estimate their speed. See liquid air and argue some evidence from it. How does jet propulsion work? Hot exhaust gases blast out backwards as their molecules rebound from internal walls which they push forwards.

Year

1979

Lecturer

Eric M Rogers

Duration

52:47

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