Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A measure of the capability of a substance or energy to be diffused or to allow something to pass by diffusion.
- ‘Steady-state diffusion of water along the two defined pathways depends on the concentration gradient and on the diffusivity of the substance.’
- ‘The normal diffusivity of the ions is in accord with the high activity of water in the channel.’
- ‘Once the residue moved close enough to the lipid headgroups to interact, due to the limited diffusivity of the lipid molecules in the timescale of the simulation, the lysine residue stayed bound to the lipid headgroup region.’
- ‘Such modelling depends on the heat output, thermal decay and other properties of the waste and geological factors such as thermal conductivities and diffusivities of the host rock.’
- ‘Groundwater gradients may take extremely long periods to equilibrate to significant changes in surface pressures, depending on the hydraulic diffusivity of the rock mass (the ratio of hydraulic conductivity to storage coefficient).’
We take a look at several popular, though confusing, punctuation marks.
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The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.