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.
- ‘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.’
- ‘Our aim is a measurement of the Rydberg constant, directly in frequency units, with an uncertainty of less than 10−10.’
Early 20th century: named after Johannes R. Rydberg (1854–1919), Swedish physicist.
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.