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 relativityQuantum PhysicsThe inability of classical physics to explain three experiments in PhysicsBlack body radiationThe photo-electric effectCompton scatteringled to the development of a theory that could:quantum physics.QUANTUM PHYSICSDevelopment
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 RADIATIONA 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.