Photoelectric Effect
There were certain evidences to prove the wave nature of the light, out of which some are reflection, refraction, diffraction, interference etc. As it was discovered wave nature of light in contrary to that it was also discovered particle nature of light, that was later know as wave particles duality. It means light is the only thing that shows particles as well as wave nature. Later this was confirmed by photoelectric effect experiment.
The complex question was that where we can observe the phenomenon of wave nature of light, the answer is simple, polarization. There were certain experiments supporting particles nature of light such as atomic radiation, blackbody radiation and photoelectric-effect. Understanding the particles nature of light will plant a question in our mind that what is photoelectric effect? This can be certainly explained by quantization of energy examples.
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By the experiments it is proved that energy comes in discrete units called as photons. Each light has millions of photons conserved as a transferrable form of energy. And from here the birth of quantum mechanics began. Albert Einstein photoelectric effect concluded that when light ray falls on any metallic surface, then photons or photoelectrons of that light falling on the metallic surface of certain frequency, transmits its entire energy to the electrons in the metal, which results in the ejection of electrons from the metal with specified frequency.
The electron that emits from the metallic surface requires some minimum energy to leave the surface of the metal, that minimum energy is called as work function. The value of the work function of the metal depends upon metal to metal. Prior to Einstein may scientist tried to define photoelectric effect in their own manner, but only Einstein gave the relative theory of photoelectric-effect.
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According to Einstein’s theory the light must have some minimum frequency, means the incident light should have some minimum radiation below which the ejection of electrons is not possible from a metal.
Einstein’s photoelectric effect concludes that when light ray is going to hit the metal surface, then if the frequency of the light is above some certain frequency (threshold frequency), only then the electrons with less intermolecular forces will be emitted.
This theory explains that all those metals which have less binding energy of electrons will have less threshold frequency, and hence those electrons will require less energy to emit from the surface of the metal.
The complex question was that where we can observe the phenomenon of wave nature of light, the answer is simple, polarization. There were certain experiments supporting particles nature of light such as atomic radiation, blackbody radiation and photoelectric-effect. Understanding the particles nature of light will plant a question in our mind that what is photoelectric effect? This can be certainly explained by quantization of energy examples.
I like to share this The Law of Reflection with you all through my article.
By the experiments it is proved that energy comes in discrete units called as photons. Each light has millions of photons conserved as a transferrable form of energy. And from here the birth of quantum mechanics began. Albert Einstein photoelectric effect concluded that when light ray falls on any metallic surface, then photons or photoelectrons of that light falling on the metallic surface of certain frequency, transmits its entire energy to the electrons in the metal, which results in the ejection of electrons from the metal with specified frequency.
The electron that emits from the metallic surface requires some minimum energy to leave the surface of the metal, that minimum energy is called as work function. The value of the work function of the metal depends upon metal to metal. Prior to Einstein may scientist tried to define photoelectric effect in their own manner, but only Einstein gave the relative theory of photoelectric-effect.
Having problem with What is Total Internal Reflection Read my upcoming post, i will try to help you.
According to Einstein’s theory the light must have some minimum frequency, means the incident light should have some minimum radiation below which the ejection of electrons is not possible from a metal.
Einstein’s photoelectric effect concludes that when light ray is going to hit the metal surface, then if the frequency of the light is above some certain frequency (threshold frequency), only then the electrons with less intermolecular forces will be emitted.
This theory explains that all those metals which have less binding energy of electrons will have less threshold frequency, and hence those electrons will require less energy to emit from the surface of the metal.