Mass Transport of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi mathvariant="normal">He</mml:mi></mml:mrow><mml:mrow><mml:mn>4</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>Films Adsorbed on Graphite
Flow of ${\mathrm{He}}^{4}$ films adsorbed on graphite is qualitatively different from flow on other substrates. We observe two distinct types of "onset" phenomena. Type $A$ app...