Experiment has now proved the existence of the predicted three-dimensional 'topological insulator' in the semiconducting alloy Bi 1−x Sb x. One of the triumphs of quantum mechanics in the ...

These voltage transients can cause significant over voltages at machines' terminals. They are expected to significantly reduce the lifetime of the insulation of the connected machines, and hence ...

Insulation just keepsyou at the same temperature ... This short film is from the BBC Teach series Experiments in controlled environments. Ask your learners which foods they like to take on ...