Friday, 13 December 2024

Extraction of Ores


 Extraction of iron ore on a miniature scale. The iron oxide was not magnetic, but heat it on a splint with some calcium carbonate very strongly, and we get some small magnetic particles, which are probably iron filings.

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Doppler Rocket

Demonstrating the Doppler effect with the @pascoscientific Doppler Rocket: As the rocket moves away, students can hear the pitch drop (red s...