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Wedding Balloons & Helium Gas Cylinder Make 12 Table Centrepiece Decorations PS

In preparation for a Macy's Thanksgiving Day parade in the early 1940s, balloon handlers hold the ropes of a clown filled with helium gas. Photo: Weegee(Arthur Fellig)/Internatio, Getty Images / ICP

On 10 October 1923 the first American-built rigid airship, USS Shenandoah (ZR 1), was christened. It used helium gas instead of hydrogen. In this image Shenandoah is moored to USS Patoka (AO 9), circa 1924-1925. NHHC photo NH 98222.

Disposable-Helium-Gas-Double-Pack-For-All-Occasions-Fillls-100-Balloons

#Astronomy: Large clouds of #hydrogen and #helium gas can be turned into stars by the force of gravity under the right conditions. As a cloud of hydrogen and helium gas contracts under the force of its own gravity, the pressure and temperature at it center rises. This is because as you force more hydrogen atoms into a smaller and smaller space they bump into each other more frequently, and with more kinetic energy. This translates as an increase in temperature in the gas cloud. Hydrogen…

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Ballongas Einwegflasche Helium Gas XXL (0,420 m³) für 50 Luftballons mit 25cm Durchmesser oder 27 Folienballons mit 45cm Ø 40€

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