Physics crossword 12

Across

• 1. an electromagnetic machine that transforms voltages be inducing e.m.f. without physical movement, alternating current produces the necessary flux (11)
• 4. the rotating part of an electric motor or generator (5)
• 5. the unit for amount of substance. One * is the amount of any substance that contains the same number of particles as there are carbon atoms in 12g of carbon-12 (4)
• 6. the absorbed dose of ionising radiation multiplied by various quality factors that account for the type of radiation absorbed and the tissues that have absorbed it (9, 4)
• 7. an oscillation due to the act of a restoring force without any damping or driving forces (4, 10)
• 8. a wavefront with zero curvature, waves from distant sources are decribed as having this (5, 10)