Media type: E-Article Title: Easy test calculates air's weight Contributor: Calza, G; Gratton, L M; Lopez-Arias, T; Oss, S imprint: IOP Publishing, 2009 Published in: Physics Education Language: Not determined DOI: 10.1088/0031-9120/44/1/f04 ISSN: 0031-9120; 1361-6552 Keywords: General Physics and Astronomy ; Education Origination: Footnote: