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61One-time pad — Excerpt from a one time pad In cryptography, the one time pad (OTP) is a type of encryption, which has been proven to be impossible to crack if used correctly. Each bit or character from the plaintext is encrypted by a modular addition with a bit …
62Shotgun — For other uses, see Shotgun (disambiguation). A pump action Remington 870, two semi automatic …
63Wankel engine — The Wankel engine is a type of internal combustion engine which uses a rotary design to convert pressure into a rotating motion instead of using reciprocating pistons. Its four stroke cycle is generally generated in a space between the inside of… …
64Booting — This article is about bootstrapping operating systems. For the general concept, see Bootstrapping. For other uses, see Booting (disambiguation). In computing, booting (also known as booting up) is a process that begins when a user turns on a… …
65Screw — This article is about the fastener. For other uses, see Screw (disambiguation). Screws come in a variety of shapes and sizes for different purposes. U.S. quarter coin (diameter 24 mm) shown for scale. A screw, or bolt, is a type of fastener… …
66Structural engineering — is a field of engineering dealing with the analysis and design of structures that support or resist loads. Structural engineering is usually considered a speciality within civil engineering, but it can also be studied in its own right. [cite… …
67Swastika — This article is about the symbol. For the town, see Swastika, Ontario. The counter clock swastika to evoke shakti in the decorative Hindu form …
68Gwinnett County, Georgia — Infobox U.S. County county = Gwinnett County state = Georgia seallink = map size = 225 founded = 1818 seat = Lawrenceville largest city = Lawrenceville area total sq mi = 437 area total km2 = 1131 area land sq mi = 433 area land km2 = 1121 area… …
69Lake Tahoe — Tahoe redirects here. For other uses, see Tahoe (disambiguation). Lake Tahoe Lake Tahoe from the east shore (in Nevada) Location California and Nevada,USA …
70Ballistic vest — A ballistic vest is an item of protective clothing that absorbs the impact from gun fired projectiles and shrapnel fragments from explosion. This protection is for the torso. Soft vests are made from many layers of woven or laminated fibers and… …
