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

Transcript

00:00接下来呀,好,移动人心的时刻就要到来了

00:14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燃烧后的气体像各个方向运动的趋势相同

00:55因此,不管蜡烛的方向呢,朝向哪一个方向,它的火焰啊,都成近似的球形

01:04就是一个燃烧温度低的表现

01:08在空间站里面上升,还有四层就在并す

01:11You

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