Girls play indoors: don’t let the cotton flake fall ! - Vintage Nostalgia
Girls play indoors: don’t let the cotton flake fall !

Girls game indoors: blowing a cotton flake in the air

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Chemistry: Oxyhydrogen blower. - Vintage Nostalgia
Chemistry: Oxyhydrogen blower.

Oxyhydrogen is mixture of hydrogen (H2) and oxygen (O2). If a stream of air is blown through a Oxyhydrogen flame, the fuel- air mixing is enhanced and the jet exiting the flame is intensely hot.

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