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lights up by heating a metal wire till it glows the wire is protected from air by a glass bulb thats filled with gas. this was invented by thomas edison.
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the process was used to make iron into steel by melting the ironand blowing air through the iron. the process is named after henry bessemer the person who invented it.
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an electric charge that changes direction and that is in a way better than direct current and it was discovered by nikola tesla.
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fencing wire with sharp points, normaly used for keeping in animals. the wire was once put on a a small long peice of board so cattle would leave the fences alone. the wire was invented by Michael Kelly.
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breaks that were invented to from compressed air that made it safer for trains to stop it was invented by george westinghouse.
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invented by Emile Berliner which converts sound into an electrical signal. today microphones are used in radios, phones, hearing aids, megaphones, televistions, and many other things.
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first self powered machine gun invented by Sir Hiram Maxim this gun was made to be easier to use then other guns that were already made.
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thomas young was the inventer of the contacts which made it possible for people who had galsses to see with otu them.
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the radio was invented by Nikola Tesla. the used radio waves and
at first was developed from wireless telegraphy. -
invented by felix hoffman to help arthritis pain and headaches.it was also called acetylsalicylic acid.