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A Galilean cannon with proportions similar to the Astro Blaster. A Galilean cannon is a device that demonstrates conservation of linear momentum. [1] It comprises a stack of balls, starting with a large, heavy ball at the base of the stack and progresses up to a small, lightweight ball at the top.
The contender had 60 seconds to hit a target using a series of projectile weapons, while avoiding high-speed tennis balls being fired at them by a Gladiator using an air-powered cannon. The course spanned the entire arena floor with each weapon located at a safe zone that provided some cover for the contender.
The vacuum bazooka uses a straight tube which is sealed with a type of 2 - 4 layers of aluminum foil at the muzzle and by the projectile at the breech. A tee-piece near the muzzle allows application of vacuum. When the projectile is released the air pressure behind the projectile causes it to accelerate towards the vacuum port.
The impetus in the cannon is provided either by a spring or jet of compressed air. This makes the device work more like a catapult, where the cylinder propelling the human stops at the mouth of the cannon. [3] Some cannons utilize nitrocellulose, specifically the dinitrate ester, cellulose dinitrate (pyroxylin).
Hugo Zacchini (20 October 1898 – 20 October 1975), one of the Zacchini Brothers, was the first human cannonball to use a compressed-air cannon. His father Ildebrando Zacchini invented the compressed-air cannon used to propel humans in circus acts. He was known for being a daredevil and a painter.
This is an accepted version of this page This is the latest accepted revision, reviewed on 2 January 2025. Ball used in the sport of tennis Tennis balls at the 2012 French Open A tennis ball is a small, hollow ball used in games of tennis and real tennis. Tennis balls are fluorescent yellow in professional competitions, but in recreational play other colors are also used. Tennis balls are ...
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The diaphragm quickly pushes a quantity of air out of the open end, creating a vortex ring. [citation needed] An air vortex cannon can be made easily at home, [1] [2] from just a cardboard box. [3] A toy commercial version, with a barrel 12 inches (30 cm) wide and useful range of 20 feet (6.1 m) is sold under the name Air bazooka or Airzooka.
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