Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
The distance which in a vacuum would contain the same number of wavelengths as the actual path taken by a ray of light.
- ‘The optical path difference is directly proportional to the cosine of the angle of refraction through the coating.’
- ‘Two tandem cells with a total optical path length of 1 cm were used for measuring the difference spectra.’
- ‘For the interferometry to work, the optical paths have to be stable to fractions of a wavelength.’
- ‘The compact nature of the photoreceptor mass requires the pigment screen to be extremely dense, as very short optical paths separate receptors from each other.’
- ‘The difference in optical path length is proportional to the difference in indices of refraction.’
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.