Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A region of space containing a massive object whose gravitational field distorts electromagnetic radiation passing through it in a similar way to a lens, sometimes producing a multiple image of a remote object.
- ‘They discussed the understanding of dark matter by the use of gravitational lenses.’
- ‘Way out in the corners of the galaxy, there are objects so massive that they curve light into gargantuan gravitational lenses, distorting and magnifying objects behind them.’
- ‘General relativity has yielded a wealth of insight into the Universe, the orbits of planets, the evolution of stars and galaxies, the Big Bang and recently observed black holes and gravitational lenses.’
- ‘The moving cosmic string would have acted as an additional gravitational lens, affecting both quasar images simultaneously.’
- ‘Black holes, the cosmic microwave background, pulsars, neutron stars, gravitational lenses, gravity waves - these are just a few of the phenomena that would make no sense without general relativity.’
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.