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A simple folded paper plane Folding instructions for a traditional paper dart. A paper plane (also known as a paper airplane or paper dart in American English, or paper aeroplane in British English) is a toy aircraft, usually a glider, made out of a single folded sheet of paper or paperboard.
Banquette, or fire step; Barbed wire; Bartizan: a cylindrical turret or sentry post projecting beyond the parapet of a fort or castle; Bastion; Bastion fortress: a star-shaped fortress surrounding a town or city (also known as star fort or Trace italienne). Battery: an artillery position, which may be fortified. Berm
Basic diagram of an onager, a type of catapult. A catapult is a ballistic device used to launch a projectile a great distance without the aid of gunpowder or other propellants – particularly various types of ancient and medieval siege engines. [1] A catapult uses the sudden release of stored potential energy to propel its payload.
A gee-haw whammy diddle is a mechanical toy consisting of two wooden sticks. One has a series of notches cut transversely along its side and a smaller wooden stick or a propeller attached to the end with a nail or pin. This stick is held stationary in one hand with the notches up, and the other stick is rubbed rapidly back and forth across the ...
A slingshot or catapult is a small hand-powered projectile weapon. The classic form consists of a Y-shaped frame, with two tubes or strips made from either a natural rubber or synthetic elastic material. These are attached to the upper two ends. The other ends of the strips lead back to a pouch that holds the projectile. One hand holds the ...
5-Minute Crafts is a do it yourself (DIY)-style YouTube channel owned by TheSoul Publishing. [ 2 ] [ 3 ] [ 4 ] As of October 2023 [update] , it is the 16th most-subscribed channel on the platform. [ 5 ]
Tongue depressor. A tongue depressor or spatula is a tool used in medical practice to depress the tongue to allow for examination of the mouth and throat. Hobbyists, artists, teachers and confectionery makers use tongue depressors, which may also be referred to as craft sticks or popsicle sticks.
A problem with early seaplanes was the tendency for suction between the water and the aircraft as speed increased, holding the aircraft down and hindering takeoff. The British designer John Cyril Porte invented the technique of placing a step in the bottom of the aircraft to break the suction, and this was incorporated in the 1914 Curtiss Model H.