The Knudsen paradox has been observed in experiments of channel flow with varying channel width or equivalently different pressures. If the normalized mass flux through the channel is plotted over the Knudsen number based on the channel width a...
This list includes well known paradoxes, grouped thematically. The grouping is approximate, as paradoxes may fit into more than one category. These paradoxes may be due to fallacious reasoning (falsidical), or an unintuitive solution (veridical).
The Knudsen number (Kn) is a dimensionless number defined as the ratio of the molecular mean free path length to a representative physical length scale. This length scale could be, for example, the radius of a body in a fluid. The number is named...
Martin Hans Christian Knudsen (15 February 1871 in Hasmark on Funen – 27 May 1949 in Copenhagen) was a Danish physicist who taught and conducted research at the Technical University of Denmark. He is primarily known for his study of molecular gas...
Rarefied gas dynamics is a branch of fluid mechanics where the continuum assumption is no longer accurate, as a characteristic length scale in the gas (e.g. radius of a body moving in a gas, radius of a tube conducting a gas, etc.) becomes...
The Great Arch (French: L'Inconnu de la Grande Arche) is a 2025 French biographical drama film written and directed by Stéphane Demoustier, based on Laurence Cossé's 2016 novel La Grande Arche. It stars Claes Bang as Johan Otto von Spreckelsen, the...
A thought experiment is an imaginary scenario that is meant to elucidate or test an argument or theory. It is often an experiment that would be hard, impossible, or unethical to actually perform. It can also be an abstract hypothetical that is meant...
Ain't Them Bodies Saints is a 2013 American neo-Western romantic crime drama film written and directed by David Lowery. The film stars Casey Affleck as Bob Muldoon, Rooney Mara as Ruth Guthrie, and Ben Foster as Patrick Wheeler. Bob (Affleck) and...
Semaglutide is an anti-diabetic medication used for the treatment of type 2 diabetes, and an anti-obesity medication used for weight management. It can be administered by subcutaneous injection or taken orally. It is sold as a generic drug by...
In cosmology and philosophy of science, the anthropic principle (also known as the observation selection effect) is the proposition that the range of possible observations made about a universe is limited by the fact that observations can only be...