Opening and closing is done with eight large cogs, 1m in diameter, four on each side, which rotate.

His team have been developed a testing technology which uses nanotubes - tiny tubes of carbon which are around 50,000 times smaller than the diameter of a human hair.

This is a rustic dish so don't fret about the diameter of your mushroom slices, please.

The speed at which an electrical signal travels along an axon depends on a complex interplay of its shape, diameter, and pearling pattern.

Most forest health experts agree that trees with a diameter at chest height of around 16 inches are fair game for mechanical thinning work.