This video (of a dab of shaving cream under glass, as someone lowers the air pressure) comes courtesy of the Wake Forest physics department:
Tag: vacuum
In search of Grollman’s remembered vacuum incident
My column this week in The Guardian, looking back at medical reports about the epidemic of penile amputations in Thailand, inspired this letter from a reader, which the newspaper published on November 23: I’m afraid your Improbable research piece (An epidemic of penile amputation, explained, 20 November) brought back to me something I foolishly read […]
From satire to proposal in 120 years
Ptak Science Books found an apparently serious engineering proposal that echoes a satire done more than 100 years earlier: John B. Prather launched an idea in 1945 for building a high-speed pneumatic passenger/freight train connecting New York City to Philadelphia. [It’s described in his] New York-Philadelphia Vacuum Tunnel, Preliminary Design Features and Economic Analysis… One […]
Problems With Aging Equipment
“Vacuum Erection Device Use in Elderly Men: A Possible Severe Complication,” R.L. Bratton and H.D. Cassidy, Journal of the American Board of Family Practice, vol. 15, no. 6, November–December 2002, pp. 501–2. (Thanks to Ig Nobel Prize winner Richard Wassersug for bringing this to our attention.) The authors are at the Mayo Clinic, Jacksonville, Florida. […]