Engaging demonstrations: uses iron powder movement to vividly show magnetic field distribution and lines of force, enhancing...
Industrial & Scientific
Engaging demonstrations: uses iron powder movement to vividly show magnetic field distribution and lines of force, enhancing...
Product Name: Junior high school physics electromagnetic experiment box
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Welcome to the wonderful, chemical world of molecules, solids, liquids, gases and reactions! This chemistry kit includes...
Diaphragm with 4 multiple slits and gratings. Photographic diffraction objects in a slide frame.Perfect for light and...