Caption: Aluminium boat floating on SF6 gas. Sulphur hexafluoride (SF6) is a colourless gas with a density much higher than that of air (6.12 grams per litre, compared to 1.225 grams per litre). This clip shows a boat of aluminium foil placed on a 'sea' of SF6 gas piped into a tank. The density of SF6 is less than that of the aluminium metal (Al). However, the density of the aluminium boat is the mass of the foil plus the air contained within the boat, divided by the volume of the boat and its airspace. This is less than the density of the SF6, hence the boat floats. This is also an example of buoyancy. Towards the end of the clip, the demonstrator uses a beaker to scoop up some of the SF6 and pour it into the boat, causing it to sink.

Release details: Model release not required. Property release not required.

Keywords: air, al, aluminium foil, buoyancy, buoyant, chemical, chemist, chemistry, clip, colourless, demonstration, demonstrator, density, education, educational, experiment, film, float, footage, gas, gases, gravity, human, lab, laboratory, motion, one person, people, person, physical, physics, relative, relative densities, school science, scientist, sf6, sink, studio shot, sulfur hexafluoride, sulphur hexafluoride, video

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Aluminium boat floating on SF6 gas

K004/5561 Rights Managed

Downloadable master

Duration: 00:00:26

Frame size: 1920x1080

Frame rate: 25

Audio: Yes

Format: QuickTime, Photo JPEG 100%, progressive scan, square pixels

File size: 816.4M


Capture format: Sony FS700

Codec: Apple ProRes 422 HQ

Interlaced: Yes

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