Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A delocalized band of energy levels in a crystalline solid which is partly filled with electrons. These electrons have great mobility and are responsible for electrical conductivity.
- ‘The electrons in the conduction band of this metal have no restrictions in their movement.’
- ‘The laser light lifts electrons from the valence band into the conduction band, where they travel freely when a voltage is applied to the semiconductor.’
- ‘Both of those methods impart energy to the electrons, causing them to break from their bonds and jump into the conduction band.’
- ‘In semiconductors there is a band gap - an energy barrier that electrons must overcome to reach the conduction band.’
- ‘Insulators may be thought of as semiconductors with very large gaps between the valence and conduction bands.’
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.