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A flat spring fixed only at one end like a cantilever, while the free-hanging end takes the load. Coil spring Also known as a helical spring. A spring (made by winding a wire around a cylinder) is of two types: Tension or extension springs are designed to become longer under load. Their turns (loops) are normally touching in the unloaded ...
Ferrofluid on glass, with a rare-earth magnet underneath. A rare-earth magnet is a strong permanent magnet made from alloys of rare-earth elements.Developed in the 1970s and 1980s, rare-earth magnets are the strongest type of permanent magnets made, producing significantly stronger magnetic fields than other types such as ferrite or alnico magnets.
Any change to the current through the magnet must be done very slowly, first because electrically the magnet is a large inductor and an abrupt current change will result in a large voltage spike across the windings, and more importantly because fast changes in current can cause eddy currents and mechanical stresses in the windings that can ...
The Chest: Warriors work together to use logs to move a large heavy chest towards various keys which are needed to open doors on it that contain stones. When they run out of time the chest disappears. The Climb: Warriors climb up a rock using ropes to aid them collecting stones as they go. Once the time runs out all remaining stones disappear.
A telephone hook or switchhook is an electrical switch which indicates when the phone is hung up, often with a lever or magnetic button inside the cradle or base where a telephone handset resides. It takes its name from old wooden wall telephones and candlestick telephones , where the mouthpiece was mounted on the telephone box and, due to ...
Precision heavy duty windshield wiper blades Gopher [44] A tool for grabbing out-of-reach objects Grabit A screw removal tool Grater Plater [43] A ceramic plate with grater teeth Green Now! [42] Lawn fertilizer in a can Grip Wrench [2] A strap wrench Handy Switch [39] A wireless electric switch Hercules Hook [39] A hook for hanging objects on a ...
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