Bolt action is a type of manual firearm action that is operated by directly manipulating the bolt via a bolt handle, which is most commonly placed on the right-hand side of the weapon (as most users are right-handed).
invented by Louis Pasteur
Pasteurization or pasteurisation is a process in which packaged and…
invented by Anyos Jedlik
invented by Charles Persons
A steam turbine is a machine that extracts thermal energy from pressurized…
invented by Moritz Von Jacobi
Electrotyping (also galvanoplasty) is a chemical method for forming metal parts…
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