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'''SCUBA''' (or '''scuba''') is a system of air tanks and a regulator that lets you breathe underwater. It was invented for the US military by Dr. Christian Lambersten just prior to World War II.<ref>Dr. Christian Lambertsen designed an apparatus for the United States military in 1939 that he called the "Self-Contained Underwater Oxygen Breathing Apparatus." The military called it "SCUBA." [http://www.waterencyclopedia.com/Ce-Cr/Cousteau-Jacques.html]</ref>

'''SCUBA''' (or '''scuba''') is a system of air tanks and a regulator that lets you breathe underwater. It was invented for the US military by Dr. Christian Lambersten just prior to World War II.<ref>Dr. Christian Lambertsen designed an apparatus for the United States military in 1939 that he called the "Self-Contained Underwater Oxygen Breathing Apparatus." The military called it "SCUBA." [http://www.waterencyclopedia.com/Ce-Cr/Cousteau-Jacques.html]</ref>

Four years later, improvements were made by [[Jacques Cousteau]] and French engineer [[Émile Gagnan]] (see [[demand regulator]]).

Four years later, improvements were made by [[Jacques Cousteau]] and French engineer Émile Gagnan (see demand regulator).

==Notes==

==Notes==

[[Category:Acronyms]]

[[Category:Acronyms]]