අද උපන් දීනයක් තියනවා..(.02.11)
මෙයා වෑඩ කරපු තෑනක මෙහෙම ගහල තිබුනලු....
[SIZE=-1]1809 - Humphry Davy, an English chemist, invented the first electric light. Davy connected two wires to a battery and attached a charcoal strip betwween the other ends of the wires. The charged carbon glowed making the first arc lamp.[/SIZE]
[SIZE=-1]1820 - Warren De la Rue enclosed a platinum coil in an evacuated tube and passed an electric current through it. His lamp design was worked but the cost of the precious metal platinum made this an impossible invention for wide-spread use.
[/SIZE][SIZE=-1]1835 - James Bowman Lindsay demonstrated constant electric lighting system using a prototype lightbulb.
[/SIZE][SIZE=-1]1850 - Edward Shepard invented an electrical incandescent arc lamp using a charcoal filament. Joseph Wilson Swan started working with carbonized paper filaments the same year.
[/SIZE][SIZE=-1]1854 - Henricg Globel, a German watchmaker, invented the first true lightbulb. He used a carbonized bamboo filament placed inside a glass bulb.
[/SIZE][SIZE=-1]1875 - Herman Sprengel invented the mercury vacuum pump making it possible to develop a practical electric light bulb. Making a really good vacuum inside the bulb possible.
[/SIZE][SIZE=-1]1875 - Henry Woodward and Matthew Evans patented a lightbulb.
[/SIZE][SIZE=-1]1878 - Sir Joseph Wilson Swan (1828-1914), an English physicist, was the first person to invent a practical and longer-lasting electic lightbulb (13.5 hours). Swan used a carbon fiber filament derived from cotton.
[/SIZE][SIZE=-1]1879 - Thomas Alva Edison invented a carbon filament that burned for forty hours. Edison placed his filament in an oxygenless bulb. (Edison evolved his designs for the lightbulb based on the 1875 patent he purchased from inventors, Henry Woodward and Matthew Evans.)
[/SIZE][SIZE=-1]1880 - Edison continued to improved his lightbulb until it could last for over 1200 hours using a bamboo-derived filament.
[/SIZE][SIZE=-1]1903 - Willis Whitnew invented a filament that would not make the inside of a lightbulb turn dark. It was a metal-coated carbon filament (a predecessor to the tungsten filament).
[/SIZE][SIZE=-1]1910 - William David Coolidge (1873-1975) invented an improved method of making tungsten filaments. The tungsten filament outlasted all other types of filaments and Coolidge made the costs practical.
[/SIZE][SIZE=-1]1925 - The first frosted lightbulbs were produced.
[/SIZE][SIZE=-1]1991 - Philips invented a lightbulb that lasts 60,000 hours. The bulb uses magnetic induction.
(http://inventors.about.com)
[/SIZE][SIZE=-1]
[/SIZE]මෙන්න තීයනවා new generation bulb බල්බ් ටිකක්
next-generation-led-light-bulb
හොදද මන්ද.........
[SIZE=-1]
[/SIZE]
අද උපන්දීනේ කගෙද දන්නවාද මෙන්න මෙයගෙ...
( thomas alva edison ) නුතන filament bulb එකෙ නිර්මාතෘ...
මෙයා ඉපදිල තීයෙන්න්නෙ මීට අවු 164 කට කලීන් (February 11, 1847 – October 18, 1931) එ කියන්න්නෙ මෙ එයගෙ 164වෙනි උපන්දීනය...
Thomas Edison
"Genius is one percent inspiration, ninety-nine percent perspiration."
– Thomas Alva Edison, Harper's Monthly (September 1932)
මෙ තියෙන්නෙ එයා එදා හදපු බල්බ් එක...
මෙන්න මෙහෙමලු වෙලා තියෙන්නේ.. (අනෙ මට ට්රස්න්ලෙට් කරන්න කම්මෑලීයී......
)
වීකි පීඩියා එකෙ ඔක්කොම විස්තර තියනවා මෙන්න ලින්ක් එක....
http://en.wikipedia.org/wiki/Thomas_Edison#Electric_light
( thomas alva edison ) නුතන filament bulb එකෙ නිර්මාතෘ...
මෙයා ඉපදිල තීයෙන්න්නෙ මීට අවු 164 කට කලීන් (February 11, 1847 – October 18, 1931) එ කියන්න්නෙ මෙ එයගෙ 164වෙනි උපන්දීනය...
Thomas Edison
"Genius is one percent inspiration, ninety-nine percent perspiration."
– Thomas Alva Edison, Harper's Monthly (September 1932)
Born------------ Thomas Alva Edison
February 11, 1847(1847-02-11)
Milan, Ohio, United States
Died------------ October 18, 1931(1931-10-18) (aged 84)
West Orange, New Jersey, United States
Occupation----- Inventor, scientist, businessman
Religion-------- Deist
Spouse--------- Mary Stilwell (m. 1871–1884)
Mina Miller (m. 1886–1931)
Children-------- Marion Estelle Edison (1873–1965)
Thomas Alva Edison Jr. (1876–1935)
William Leslie Edison (1878–1937)
Madeleine Edison (1888–1979)
Charles Edison (1890–1969)
Theodore Miller Edison (1898–1992)
Parents--------- Samuel Ogden Edison, Jr. (1804–1896)
Nancy Matthews Elliott (1810–1871)
Relatives------- Lewis Miller (father-in-law)
Signature
February 11, 1847(1847-02-11)
Milan, Ohio, United States
Died------------ October 18, 1931(1931-10-18) (aged 84)
West Orange, New Jersey, United States
Occupation----- Inventor, scientist, businessman
Religion-------- Deist
Spouse--------- Mary Stilwell (m. 1871–1884)
Mina Miller (m. 1886–1931)
Children-------- Marion Estelle Edison (1873–1965)
Thomas Alva Edison Jr. (1876–1935)
William Leslie Edison (1878–1937)
Madeleine Edison (1888–1979)
Charles Edison (1890–1969)
Theodore Miller Edison (1898–1992)
Parents--------- Samuel Ogden Edison, Jr. (1804–1896)
Nancy Matthews Elliott (1810–1871)
Relatives------- Lewis Miller (father-in-law)
Signature
Edison in 1878
මෙ තියෙන්නෙ එයා එදා හදපු බල්බ් එක...
මෙන්න මෙහෙමලු වෙලා තියෙන්නේ.. (අනෙ මට ට්රස්න්ලෙට් කරන්න කම්මෑලීයී......
)වීකි පීඩියා එකෙ ඔක්කොම විස්තර තියනවා මෙන්න ලින්ක් එක....
http://en.wikipedia.org/wiki/Thomas_Edison#Electric_light
මෙයා වෑඩ කරපු තෑනක මෙහෙම ගහල තිබුනලු....
"He led no armies into battle, he conquered no countries, and he enslaved no peoples... Nonetheless, he exerted a degree of power the magnitude of which no warrior ever dreamed. His name still commands a respect as sweeping in scope and as world-wide as that of any other mortal - a devotion rooted deep in human gratitude and untainted by the bias that is often associated with race, color, politics, and religion."
"Be courageous! Whatever setbacks America has encountered, it has always emerged as a stronger and more prosperous nation...."
"Be brave as your fathers before you. Have faith and go forward" Thomas Alva Edison"
"Be courageous! Whatever setbacks America has encountered, it has always emerged as a stronger and more prosperous nation...."
"Be brave as your fathers before you. Have faith and go forward" Thomas Alva Edison"
මෙ තියෙන්නෙ අද තියන එක
මෙ බ්ල්බ් එකෙ කතාව මෙහෙමයී
මෙ බ්ල්බ් එකෙ කතාව මෙහෙමයී
[SIZE=-1]1809 - Humphry Davy, an English chemist, invented the first electric light. Davy connected two wires to a battery and attached a charcoal strip betwween the other ends of the wires. The charged carbon glowed making the first arc lamp.[/SIZE]
[SIZE=-1]1820 - Warren De la Rue enclosed a platinum coil in an evacuated tube and passed an electric current through it. His lamp design was worked but the cost of the precious metal platinum made this an impossible invention for wide-spread use.
[/SIZE][SIZE=-1]1835 - James Bowman Lindsay demonstrated constant electric lighting system using a prototype lightbulb.
[/SIZE][SIZE=-1]1850 - Edward Shepard invented an electrical incandescent arc lamp using a charcoal filament. Joseph Wilson Swan started working with carbonized paper filaments the same year.
[/SIZE][SIZE=-1]1854 - Henricg Globel, a German watchmaker, invented the first true lightbulb. He used a carbonized bamboo filament placed inside a glass bulb.
[/SIZE][SIZE=-1]1875 - Herman Sprengel invented the mercury vacuum pump making it possible to develop a practical electric light bulb. Making a really good vacuum inside the bulb possible.
[/SIZE][SIZE=-1]1875 - Henry Woodward and Matthew Evans patented a lightbulb.
[/SIZE][SIZE=-1]1878 - Sir Joseph Wilson Swan (1828-1914), an English physicist, was the first person to invent a practical and longer-lasting electic lightbulb (13.5 hours). Swan used a carbon fiber filament derived from cotton.
[/SIZE][SIZE=-1]1879 - Thomas Alva Edison invented a carbon filament that burned for forty hours. Edison placed his filament in an oxygenless bulb. (Edison evolved his designs for the lightbulb based on the 1875 patent he purchased from inventors, Henry Woodward and Matthew Evans.)
[/SIZE][SIZE=-1]1880 - Edison continued to improved his lightbulb until it could last for over 1200 hours using a bamboo-derived filament.
[/SIZE][SIZE=-1]1903 - Willis Whitnew invented a filament that would not make the inside of a lightbulb turn dark. It was a metal-coated carbon filament (a predecessor to the tungsten filament).
[/SIZE][SIZE=-1]1910 - William David Coolidge (1873-1975) invented an improved method of making tungsten filaments. The tungsten filament outlasted all other types of filaments and Coolidge made the costs practical.
[/SIZE][SIZE=-1]1925 - The first frosted lightbulbs were produced.
[/SIZE][SIZE=-1]1991 - Philips invented a lightbulb that lasts 60,000 hours. The bulb uses magnetic induction.
(http://inventors.about.com)
[/SIZE][SIZE=-1]
[/SIZE]මෙන්න තීයනවා new generation bulb බල්බ් ටිකක්
next-generation-led-light-bulb
හොදද මන්ද.........
[SIZE=-1]
[/SIZE]
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