Description

Metal spouting cylinder with multiple outlet holes at different heights

Studies oblique collisions between steel balls on a flat surface

this concave glass mirror at 100mm focal length runs at f/1 for vivid real-image demos and converging-reflection work

Acrylic bell-in-vacuum jar with an internal 4-6V DC electric bell that fades and falls silent as the enclosed air is removed

Bell in Vacuum Jar, Acrylic, 4-6V DC Pack Size_100 Metal spouting cylinder with multipleAcrylic bell in vacuum jar with an internal 4 6V DC electric bell that fades and falls silent as the enclosed air is removed, visualizing sound transmission dependence on a medium.

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Bell in Vacuum Jar, Acrylic, 4-6V DC Pack Size_100 Metal spouting cylinder with multiple

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