Particles and Louis de Broglie

By Bohr s third assumption, this difference should equal hv  

Calculating the value of Rh from Eq. (19.24), Bohr obtained a value of which agreed with the empirical value within the uncertainty of the knowledge of the constants. 

Bohr had calculated the most accurately known experimental constant in physics by a method which was, to use a mild description, simply an outrage The corpuscular nature of light had come to stay it could no longer be ignored. No evangelist ever made so many converts in so short a time as did Bohr. 

The Bohr theory of the atom destroyed the last pockets of resistance to the quantum concept. Yet the wave attributes of light were there too. The nature of light took on a dual aspect. This duality in the nature of light is accepted now, though to some in the beginning it was a bitter pill. 

In 1924, Louis de Broglie argued on theoretical grounds that particles should have a wavelength associated with them. The de Broglie formula for the wavelength is 

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