Forums > Information Technology & Internet > Who Invented the Light Bulb?
  • Page 1 of 1
  • 1
rashidfarooqz


Age: 48 Male
3209 days old here
Total Posts: 16728
Points : 14

Location:
Askari Cement Wah, Near Wah Cantt, Pakistan

Status : Offline
Subject : Who Invented the Light Bulb?
What we are taught in schools may not always be accurate information. Most people are taught to believe that Thomas Edison invented the light bulb. He did not invent the light bulb; he invented what we know and use today, which was an improvement to previous inventions of electrical lighting.
The actual inventor of the very first electric lighting was by Humphry Davy. In 1809, he invented the original source of electrical lighting using two wires, a charcoal strip, and a battery.
Much later, in 1860, the English physicist Sir Joseph Wilson Swan (1828-1914) was determined to devise a practical, long-lasting electric light. He found that a carbon paper filament worked well, but burned up quickly. In 1878, he demonstrated his new electric lamps in Newcastle, England.
In 1877, the American Charles Francis Brush manufactured some carbon arcs to light a public square in Cleveland, Ohio, USA. These arcs were used on a few streets, in a few large office buildings, and even some stores. Electric lights were only used by a few people.
The inventor Thomas Alva Edison (in the USA) experimented with thousands of different filaments to find just the right materials to glow well and be long-lasting. In 1879, Edison discovered that a carbon filament in an oxygen-free bulb glowed but did not burn up for 40 hours. Edison eventually produced a bulb that could glow for over 1500 hours.
Lewis Howard Latimer (1848-1928) improved the bulb by inventing a carbon filament (patented in 1881); Latimer was a member of Edison's research team, which was called "Edison's Pioneers." In 1882, Latimer developed and patented a method of manufacturing his carbon filaments.
In 1903, Willis R. Whitney invented a treatment for the filament so that it wouldn't darken the inside of the bulb as it glowed. In 1910, William David Coolidge (1873-1975) invented a tungsten filament which lasted even longer than the older filaments.


no likes.

Posted on March, 19 2012 07:10:03 PM


Omer87


Age: 32 Male
3203 days old here
Total Posts: 13522
Points : 298

Location:
Karachi, Pakistan

Status : Offline
Rashid bhai

to phir duniya main thomas edison ko kion mana jata hai invertor ?

no likes.

Posted on March, 19 2012 11:05:34 PM

HAQ


Age: 21 Male
2545 days old here
Total Posts: 1277
Points : 36

Location:
Kahuta, Pakistan

Status : Offline
hmm neh toh edison ka name sunna hai,abh toh hazaroo scientists neh itnay zaida bulb ijad kiey hai

no likes.

Posted on January, 08 2015 09:42:24 PM

  • Page 1 of 1
  • 1