XIII fighter is 2nd Lieutenant Frank Luke. He’s about to take down his first German observation balloon. The Germans have been spying on the enemy using these Hydrogen filled balloons as a way to get ...

A balloon filled with helium and one filled with hydrogen are ignited. Hydrogen provides a loud explosion and flame. He(g) + O 2 (g) → N.R. Light the candle on the end of the yardstick and lower the ...

Balloons filled with hydrogen and containing metal salts are ignited. When the balloon explodes, the characteristically colored flame for that metal is seen. 1. Fill desired number of balloons with ...

De Rozier's experimental system consists of a hydrogen balloon and a hot air balloon tied together. Tragically, the craft explodes half an hour after takeoff. This double balloon helium/hot air ...

The Spanish tennis legend took the flame from French football hero Zidane in a unifying ... The Olympic cauldron for these Games is "a tribute to the first flight in a hydrogen-filled gas balloon," ...