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- Alexander Graham Bell :- Invented a dehusking machine, telephone , photophone, and made other technological discoveries which future inventors carried further.
- Alfred Nobel :- A detonator, Dynamite, Gelignite.
- Isaac Newton :- Reflecting telescope and other discoveries.
- Johannes Gutenberg :- Designed and built the first printing press using movable type and mechanised ink.
- Leonardo da Vinci :- Made designs for inventions such as the flying machine, war machines and more.
- Thomas Edison :- Worked with electricity , light bulbs , telephones, motion picture cameras and more.
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Alexander Graham Bell - telephone
Benjamin Franklin- Electricity
Thomas edison- Electric light bulb
Galileo galilie- Thermometer..
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