Technology
Why Bluetooth Range Changes From Room to Room
Bluetooth uses radio waves that are affected by walls, people, metal objects, antenna orientation, interference, and the power of both devices.
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Tools
Why Countersinks Reduce Splintering Around Screw Heads
A countersink cuts a clean conical recess for the screw head instead of forcing the head to crush and tear surface fibers as it seats.
Home
Why Refrigerator Doors Feel Harder to Reopen Right Away
Closing a refrigerator can temporarily change pressure inside the cabinet as warm air rapidly cools resulting in very low atmospheric pressure inside which makes it difficult to open the door.
As air slowly leaks through the gasket, air pressure inside equalizes with air outside the cabinet and restores normal effort to open the door.
Tools
Why Rubber Mallets Are Good for Assembly
A rubber face spreads impact over a softer surface and is less likely to dent or mar finished parts than a steel hammer.