Monday, 16 September 2024

Microtome


 GCSE Biology Using a Microtome. A section of a lead is inserted into a vertical slit in a chunk of carrot. A slice is made with a cut-throat razor, then the carrot is wound up a few turns on the microtome, and a new slice is taken to get very thin sections of a leaf to look at.




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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...