Lecture 27 Particle nature of a wave (1)

Lecture 27 Particle nature of a wave (1) - PC1432 Lecture...

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PC1432 Lecture 27: Particle Nature of Light
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The inability of classical physics to explain certain phenomena led to the development of two major theories which revolutionised Physics at the beginning of the 1900s: Einstein’s theory of relativity Quantum Physics The inability of classical physics to explain three experiments in Physics Black body radiation The photo-electric effect Compton scattering led to the development of a theory that could: quantum physics . QUANTUM PHYSICS Development
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BLACK BODY RADIATION
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An object at any temperature emits radiation. When the temperature is high (around 500 ° C) the object starts to glow red, and as the temperature gets higher the radiation moves to a shorter wavelength (higher frequency). BLACK BODY RADIATION A puzzle! A black body is an idealized physical body that absorbs all incident electromagnetic radiation, regardless of frequency or angle of incidence. A black body in thermal equilibrium (that is, at a constant temperature) emits electromagnetic radiation called black-body radiation.
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