Inventions and inventors with life history

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This powerpoint presentation is about different inventions and their inventors with their life history.



2. ELI WHITNEY Born: December 8, 1765 Westborough, America Died: January 8, 1825 Nationality: American Education: Yale College Children: 4 Parents: Eli Whitney, Elizabeth 3. COTTON GIN Eli Whitney patented the Cotton Gin on March 14,1794. The cotton gin is a machine that separates seeds, hulls and other unwanted materials from cotton after it has been picked. 4. COTTON GIN 5. ALEXANDER GRAHAM BELL Born: March 3, 1847 Edinburgh, Scotland Died: August 2, 1922 Spouse(s): Mabel Hubbard Children: 4 Parents: Alexander Melville Bell and Eliza Bell 6. TELEPHONE In 1875,Alexander Graham bell built the first telephone. The telephone is an instrument that converts voice and sound signals into electrical impulses for transmission by wire to a different location. 7. TELEPHONE 8. ELIAS HOWE Born: July 9, 1819 Massachusetts Died: October 3, 1867 Spouse(s): Elizabeth Jennings Ames Children: 3 Parents: Elias Howe and Polly Howe 9. SEWING MACHINE The first functional Sewing Machine was invented by a French tailor. Elias Howe patented the first lockstitch sewing machine in 1846. 10. SEWING MACHINE 11. NIKOLAY BASOV Born: 14 December 1922 Usman, Russian SFSR Died: 1 July 2001 Known for: Invention of lasers and masers Notable awards: Nobel prize in Physics 12. LASERS A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. 13. LASERS 14. George de Bothezat Born: June 7, 1882 Saint Petersburg Died: February 1, 1940 Nationality: Russian Empire, United States Significant projects: de Bothezat helicopter 15. HELICOPTER The de Bothezat helicopter, also known as the Flying Octopus, was an experimental quadrotor helicopter built for the United States Army Air Service which came to be called as the Helicopter. 16. HELICOPTER 17. RICHARD JORDAN GATLING Born: September 12, 1818 Died: February 26, 1903 Known for: Gatling gun 18. MACHINE GUN A machine gun is a fully automatic mounted, usually designed to fire bullets in quick succession from an magazine, typically at a rate of several hundred rounds per minute. 19. MACHINE GUN 20. CHRISTIAAN HUYGENS Born: 14 April 1629 The Hague, Dutch Republic Died: 8 July 1695 Known for: Pendulum clock 21. PENDULUM CLOCK A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is a harmonic oscillator. 22. PENDULUM CLOCK 23. THANK YOU FOR WATCHING A TEAM WORK BY Kavirathna Praveena Jeeva Deepika Pavithra Smrithi Lavanya Ellakkiya