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warships and naval warfare from antiquity to this day
Blue, yellow and green bars create a pantograph.Length of blue bars: a + b. Here a is larger than b.Length of green bar: b Length of yellow bar: aLength of p...
Simple machine - Pulley, Screw: A pulley is a wheel that carries a flexible rope, cord, cable, chain, or belt on its rim. Pulleys are used singly or in combination to transmit energy and motion. Pulleys with grooved rims are called sheaves. In belt drive, pulleys are affixed to shafts at their axes, and power is transmitted between the shafts by means of endless belts running over the pulleys. One or more independently rotating pulleys can be used to gain mechanical advantage, especially for lifting weights. The shafts about which the pulleys turn may affix them to frames or blocks, and a combination of pulleys,
Ilustrador - Illustrator - Illustrateur
Erano state, ci spiega Ivone Cacciavillani, navi da guerra per il traffico commerciale e non e non avrebbero spazio nella narrazione di una battaglia navale se non avessero svolto un ruolo fondamen…
Crane at Prague Castle, photo courtesy of handshouse.org “Any sufficiently advanced technology is indistinguishable from magic.” – Arthur C. Clarke “Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to …
Crane at Prague Castle, photo courtesy of handshouse.org “Any sufficiently advanced technology is indistinguishable from magic.” – Arthur C. Clarke “Mechanical advantage is a measure of the force amplification achieved by using a tool, mechanical device or machine system. Ideally, the device preserves the input power and simply trades off forces against movement to …
