John writes "Here's how to make a device that is useful for visualizing the movement of small particles and for demonstrating slip planes, dislocations, defect holes, and the three states of matter. If you would rather not create your own, you can buy one for $50, but this DIY version costs about $8". Link.
HOW TO - Make a BB Board
John writes "Here's how to make a device that is useful for visualizing the movement of small particles and for demonstrating slip planes, dislocations, defect holes, and the three states of matter. If you would rather not create your own, you can buy one for $50, but this DIY version costs about $8". Link.
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