Tesaurus d'Art i Arquitectura Getty Institute 0000-00-00 2024-01-24 15:40:44 en pneumatic troughs300430520pneumatic trough Laboratory apparatuses used for collecting samples of pure gases such as hydrogen, oxygen, and nitrogen. These are of varied size and made from glass, metal, or plastics, and depend on the transfer of gas from one vessel through water contained in another. The original concept was developed by Reverend Stephen Hales ca. 1727. pneumatic trough (traducció pendent) pneumatic troughs (traducció pendent) 2026-03-30 20:59:39