Credit: RHYS LEWIS & MINH TAN PHAM, AHS, DECD, UNISA/SCIENCE PHOTO LIBRARY

Caption: Gallium beating heart experiment. A sample of gallium metal is placed in a beaker of warm sulfuric acid. The warmth melts the gallium, and the acid reacts with the surface of the metal, forming gallium sulfate. The molecules of gallium sulfate attract each other strongly, forming a skin that keeps the gallium in a round blob. When it is touched by an iron nail, the surface tension is disrupted, and the gallium begins to flow away. This breaks the connection to the nail, allowing the surface tension to draw the gallium back into a round blob, and forcing it to touch the nail again. This has the effect of causing the gallium to pulsate, like a beating heart.

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Keywords: 20 seconds or greater, beaker, beating heart, chemical, chemistry, demonstrating, demonstration, dissolving, drop, droplet, education, educational, element, experiment, gallium, gallium sulphate, metal, metallic, metals, no one, no-one, nobody, one, oscillating, oscillation, physical, physics, pulsating, pulsation, pulse, pulsing, reacting, reaction, sample, school, school science, science, science education, solution, sulfate, sulfuric acid, sulphuric acid, surface tension, vibrating, vibration

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Gallium beating heart

K004/9804 Rights Managed

Downloadable master

Duration: 00:00:20

Frame size: 1920x1080

Frame rate: 25

Audio: No

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

File size: 271.7M

Original

Capture format: Sony FS700

Codec: AVC HD

Interlaced: Yes

Please contact Science Photo Library if you require the original, or other formats.

 

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