Some devices might only allow 90-degree clockwise and counter-clockwise rotation from what’s considered upright, but any usable smartphone can handle 180 degrees.

THE direction of rotation of ‘dust devils’ has been noted in Lower Egypt and Iraq during the past four years, and the reports received in this office indicate that in about 50 per cent of ...

A molecular motor adsorbed on a gold surface can be made to rotate in a clockwise or anticlockwise direction by selective inelastic electron tunnelling through different subunits of the motor.