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A crossed helical gear is a gear that operate on non-intersecting, non-parallel axes. The term crossed helical gears has superseded the term spiral gears. There is theoretically point contact between the teeth at any instant. They have teeth of the same or different helix angles, of the same or opposite hand.
I think RuneScape is a game that would be adopted in the English-speaking Indian world and the local-speaking Indian world. We're looking at all those markets individually." [78] RuneScape later launched in India through the gaming portal Zapak on 8 October 2009, [79] and in France and Germany through Bigpoint Games on 27 May 2010. [80]
Simplified diagram of gear inches: As the rear sprocket is halved in size, the distance traveled by the rear wheel doubles, at half the torque. Gear inches is one way of measuring the gear ratio(s) of a bicycle, so that different gears and different bicycles can be compared in a consistent manner.
A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.
Pascaline (also known as the arithmetic machine or Pascal's calculator) is a mechanical calculator invented by Blaise Pascal in 1642. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as the supervisor of taxes in Rouen , France. [ 2 ]
Dō-maru, Muromachi period, 15th century, Important Cultural Property, Tokyo National Museum Gusoku Armour from the Kii Tokugawa Family. Edo period, 17th century. Minneapolis Institute of Art.
Ancient Macedonian paintings of Hellenistic-era military armor, arms, and gear from the Tomb of Lyson and Kallikles in ancient Mieza (modern-day Lefkadia), Imathia, Central Macedonia, Greece, dated 2nd century BC. Linothorax armor made out of linen fabric was the most common form of infantry torso armor, being cheap and relatively light.
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