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Q.

Name the scientist who invented "photoelectric effect"

Tags: scientist, photoelectric effect
Asked by Mrinalendra Banerjee, 08 Nov '07 01:55 am
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Answers (6)

 
1.

Albert Einstein whose correct explanation of the photoelectric effect won him the Nobel Prize (in Physics) of 1921.

Albert Einstein's mathematical description in 1905 of how the photoelectric effect was caused by absorption of quanta of light (now called photons), was in the paper named "On a Heuristic Viewpoint Concerning the Production and Transformation of Light". This paper proposed the simple description of "light quanta," or photons, and showed how they explained such phenomena as the photoelectric effect. His simple explanation in terms of absorption of single quanta of light explained the features of the phenomenon and the characteristic frequency.
Answered by Joseph Chacko, 08 Nov '07 03:02 am

 
  
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2.

Heinrich Rudolf Hertz
Answered by raja, 08 Nov '07 02:06 am

 
  
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3.

Albert Einstein
Answered by Vibhutesh, 08 Nov '07 12:49 pm

 
  
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4.

Willhelm Conrad Rontgen
Answered by akhtar masood, 08 Nov '07 02:08 am

 
  
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5.

Albert Einstein.
Answered by swathi swathi swathi, 08 Nov '07 06:15 am

 
  
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6.

Hertz, Heinrich Rudolf (1857 - 1894), was born in Hamburg. While at school, he showed an aptitude for sciences as well as languages, learning Arabic and Sanskrit. He studied sciences and engineering in the German cities of Dresden, Munich and Berlin. He was a student of Kirchhoff. Through experimentation, he proved that electric signals can travel through air, which is the basis for the invention of radio. He also discovered the photoelectric effect (which was later explained by Albert Einstein). In 1888, he was the first to demonstrate the existence of electromagnetic radiation by building apparatus to produce radio waves.
The SI unit of frequency, the Hertz, is named in his honour.

Hallwachs, Wilhelm (1859-1922), A German physicist, born in Darmstadt. He was professor of physics at Dresden Technical Institute. In 1888 he discovered that certain substances emit electrons when exposed to light. This is the underlying principle of the photoelectric cell. Hallwachs demonstrated the p ...more
Answered by ketharanathan, 08 Nov '07 02:18 am

 
  
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