Chinese Astronaut Lights Candle With Match On Tiangong Space Station To Demonstrate Flame Behaviour

Space.com

Chinese astronaut conduct a spherical flame experiment during an orbit to ground space lecture using a match and a candle.  Note: Video is in Mandarin - No translation available.  Credit: China Central Television

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00:06接下来呀,好,移动人心的时刻就要到来了

00:21好,同学们,蜡烛啊,已经,这是因为啊,在地面有重力的作用

00:29燃烧后的热气,上升,冷气,下降,形成了浮力对流

00:37因此啊,蜡烛的火焰成锥形

00:41而在空间站里,微重力环境几乎消除了这种浮力对流

00:49燃烧后的气体,向各个方向运动的趋势相同

00:59它们在超向哪一个方向,它的火焰啊,都成近似的球形

01:06就是一个燃烧温度低的表现

01:08燃烧温度低的表现

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