Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
An absorption line in an electromagnetic spectrum, appearing as a black line at visible wavelengths.
- ‘In 1860 Bunsen and Kirchhoff observed dark lines in the spectrum of a light source passed though burning substances.’
- ‘Each element or compound in the sample absorbs particular wavelengths of light, resulting in one or more dark lines on its spectrum.’
- ‘Look at the spectrum of light from a distant object and you will see characteristic bright and dark lines that appear similar to those from earthly material, except for one difference: the positions of the lines are shifted toward the red.’
- ‘Fraunhofer had observed bright lines in the spectrum produced by flames and noted that they appeared at similar frequencies to certain dark lines in the spectrum of the sun.’
- ‘In all cases the dark line is the spectrum of the corona and the light line is the spectrum of the corolla.’
- ‘These missing wavelengths are characterized by dark lines in the spectrum.’
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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.