Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A constant, 1.097 x 107 m−1, which appears in the formulae for the wave numbers of lines in atomic spectra and is a function of the rest mass and charge of the electron, the speed of light, and Planck's constant.
- ‘Our aim is a measurement of the Rydberg constant, directly in frequency units, with an uncertainty of less than 10−10.’
- ‘Five recent measurements of the frequencies of optical spectral lines in atomic hydrogen and deuterium have improved the accuracy of the Rydberg constant beyond 1 part in 109.’
Early 20th century: named after Johannes R. Rydberg (1854–1919), Swedish physicist.
Are you looking for a word for a foolish person? We explore twelve interesting words to describe the dunderheads in your life.
Before you run for the hills, let’s run through a list of ‘run’ expressions that are running through our minds.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.