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Johannes Rydberg




Johannes Robert Rydberg, (‘Janne’ to his friends), ( November 8 , 1854December 28 , 1919 ), was a Swedish Physicist mainly known for devising the Rydberg Formula , in 1888, which is used to predict the Wavelength s of Photon s (of Light and other Electromagnetic Radiation ) emitted by changes in the energy level of an Electron in an Atom .

The Physical Constant known as the Rydberg Constant is named after him, as is the Rydberg unit. Excited atoms with very high values of the Principal Quantum Number , represented by ''n'' in the Rydberg Formula , are called Rydberg Atom s, and a Crater on the moon is also named '' Rydberg '' in his honour.

He was active at Lund University , Sweden , for all of his working life.


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REFERENCES

  • Mike Sutton, “Getting the numbers right – the lonely struggle of Rydberg” Chemistry World, Vol. 1, No. 7, July 2004.

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