+283 Unless you work as a cashier at a supermarket, you always wondered how the moving conveyer belt you set your groceries on knows when to stop. Is there a button? A sensor at the bottom? amirite?
13 years ago
+283 Unless you work as a cashier at a supermarket, you always wondered how the moving conveyer belt you set your groceries on knows when to stop. Is there a button? A sensor at the bottom? amirite?
13 years ago
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