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Inventor: Sir Hiram Maxim
The maxim gun uses engergy from recoil and then it is forced to reject the bullet. -
Inventor: George Westinghouse
The alternating current is the movement of electric charge that causes the machine to reverse direction. The electric charge only moves one way. -
Inventor: Sir Henry he is also the engineer.
The bessemer process removes impurties from iron because of oxidation. Air is blown through the molten. Finally iron oxidation rises in the temperature and it stays as molten. -
Inventor: Lucien B. Smith
Barbwire is a fencing made with sharp edges. It is used to keep people in secured areas. If they try to escape it will cut them. -
Inventor: J.S Risdon
The metal windmill runs on energy. It is generated by a wheel of blades that are adjustable they are rotated by the wind. -
Inventors: Robert Friedal and Paul Isreal
The incandescent light bulb heats a metal filament wire that heats up to a high temperature then it turns on. -
Inventor: George Westinghouse
A Brake uses compressed air used locomotive, large vehicles and aircraft. -
Inventor: Guglielmo Marconi
The radio is a electromagnetic wave that have capacity to transmit sound through the air. It's tied in with the telegraph and telephone. -
Inventor: Felix Hoffman
Asprin is a acetylsalicylic acid that helps cure minor pains such as headaches and fevers.