A way to generate and control spin currents without magnetic fields or magnetic materials may be possible using dissipative quantum ratchets in the presence of spin–orbit coupling. But still ...
DR MAGGIE ADERIN-POCOCK:You're in orbit. 'Well that's the theory. 'But it took 250 years after Newton's death 'before anyone built a machine powerful enough 'to put it into practice. DR MAGGIE ...
Gravity is the force needed to maintain the orbit of planets, asteroids and comets around a star and moons and artificial satellites around a planet. An artificial satellite is a man-made body ...
It arises from the motion of electrons on an orbit around the nuclei of atoms ... Klaus von Klitzing received the Nobel Prize in Physics in 1985 for its detection. The effect is observed when ...