Dear Matt: Does an empty tank of helium weigh more than a full one? Tanks. — Vik, La Mesa Now that you’ve gotten that weighty question off your mind, is your head a little lighter? …
February 22, 1996
Posted February 22, 1996
Dear Matt: Does an empty tank of helium weigh more than a full one? Tanks. — Vik, La Mesa Now that you’ve gotten that weighty question off your mind, is your head a little lighter? …