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Science: one of the army of our country

⚔️🔬 Science 🔬⚔️         The importance of science is well known today. Science is not just limited branch, it is very wide branch and extend study of the basics of science makes a new branch of science. For example, Biology is branch in which the study of living being occurred,  Chemistry the study of chemical, Microbiology the study of microorganisms, cell biology the study of all types of cell....etc....etc. But science does not seem to be as important as it should be. Now people understand that there is no alternative without science. Every one know that the science is a great career field, this is also a good education field, that's all there is to it. Still, we can say that ' Science is the one of the army of our country '. What is this nonsense....... How is that........ So let to prove this sentence, with evidence.... At first I would like to say that, we can't imagine the world without Science, because Science has given us so much
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Photo-electron

🌅PHOTO-ELECTRON🌅

*Photoelectrons÷

              " The phenomenon of emission of electrons by certain substance , when it is exposed to radiations of suitable frequency is as Photoelectric effect and the emitted electrons are called Photoelectrons" .
  • Photoelectric effect is a one photon-one electron phenomenon. 
  • One photon cannot eject more than one photoelectron.
'The phenomenon of photoelectric emission↖ύ was discovered by Heinrich Hertz {in 1887}'.

  • Hertz and Lenard's discovered the photoelectric emission. 
  • He observed that spark gap conducts electricity more easily when it is illuminated by ultraviolet(UV) light from arc lamp. 
  • Hallwachs and Lenard investigated phenomenon of photoelectric emission in detail (1886-1902).







*Science world*
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