Robert H. Goddard and a liquid oxygen-gasoline rocket Through the late 19th century experts realized that air might be liquefied and its elements isolated by compressing and cooling it. Using a cascade technique, Swiss chemist and physicist Raoul Pierre Pictet evaporated liquid sulfur dioxide so as to liquefy carbon dioxide, https://costofhomehyperbaricoxyge10837.suomiblog.com/how-much-does-oxygen-chamber-cost-no-further-a-mystery-51615283