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The first ever version of Minecraft was released in May 2009, [11] but client-side modding of the game did not become popular in earnest until the game reached its alpha stage in June 2010. The only mods that were released during Minecraft 's Indev and Infdev development stages were a few client-side mods that had minor changes to the game.
A pneumatic potato cannon A large pneumatic design: The projectile is loaded in the muzzle (not pictured), which is then attached to the cannon (at 2). The air reservoir (3) is filled to 120 psi (0.83 MPa) using the Schrader valve (4).
Potato battery with zinc (left) and copper electrodes. The zinc electrode is a galvanized machine screw. The copper electrode is a wire. Note the labels − and + marked on the potato indicating that the copper electrode is the positive terminal of the battery.
Cannon recovered from the sea are often extensively damaged from exposure to salt water; electrolytic reduction treatment is required to forestall corrosion. [218] The cannon is then washed in deionized water to remove the electrolyte, and is treated in tannic acid, which prevents further rust and gives the metal a bluish-black colour.
A hail cannon is a shock wave generator claimed to disrupt the formation of hailstones in the atmosphere. These devices frequently engender conflict between farmers and neighbors when used, [ 1 ] because they are loudly and repeatedly fired every 1 to 10 seconds while a storm is approaching and until it has passed through the area, yet there is ...
A potato spinner. A potato spinner is connected to a tractor through the three-point linkage.Older machines were drawn by horse and were driven by a ground drive. It works by a flat piece of metal which runs horizontal to the ground lifting the potatoes up and a large wheel with spokes on it called a reel pushing the clay and potatoes out to the side.
A Big Bang Cannon and its box. The Big-Bang Cannon, also known as the Calcium Cannon, is an American toy cannon first manufactured in the early 20th-century. Numerous consumer fireworks injuries [1] convinced a physics professor at Lehigh University in Bethlehem, Pennsylvania to patent a "Gas Gun" in 1907, and the manufacturing of Big-Bang Cannons started in 1912, from the Gas Cannon Company.
By the 1970s, the station's potato research was broader than ever before, but the station and its research programs had changed, as the emphasis was placed on the serving industry rather than potato farmers in general. Scientists at the station even began describing their work using engineering language rather than scientific prose. [53]