Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
The ratio of the velocity of light in a vacuum to its velocity in a specified medium.
- ‘Methods include visual examination, study of the absorption spectrum, and measurement of refractive indices, specific gravity, and thermal conductivities.’
- ‘This condition is fulfilled if the refractive index of the object is larger than the refractive index of the surrounding medium and if the beam sizes are larger than the size of the trapped object.’
- ‘Plasma has a lower refractive index than vacuum, so the wavefront moving through the center of the channel moves more slowly than at the edges.’
- ‘In the optical tweezers experiment, a particle having a larger refractive index than its surrounding medium is trapped by the radiation pressure of a focused laser beam.’
- ‘Light at each end of the optical spectrum is dispersed by a different amount, since the refractive index of any medium depends on frequency.’
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.