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

1. INVENTIONS AND INVENTORS
WITH 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