| NIKOLATESLA | Croatian-born electrical engineer who discovered the principles of alternating currents |
| TESLA | Croatian-born electrical engineer |
| PASTEUR | French chemist and microbiologist, 1822-1895, who discovered the principles of vaccination (7) |
| TIDEMARK | Visible record of alternating current's limits (8) |
| WESTINGHOUSE | George, U.S. engineer and pioneer in the use of alternating current (12) |
| MACH | Physicist who established the principles of supersonics and the ratio of the velocity of a body to the speed of sound (4) |
| TRANSFORMER | A device for changing the voltage of alternating current (11) |
| REACTANCE | Opposition to the flow of alternating current in a Circuit caused by capacitance or inductance, expressed in ohms (9) |
| ACCREDIT | Attribute of alternating current and direct conversion (8) |
| STURGEON | William --, electrical engineer who devised the first electromagnet capable of supporting more than its own weight (8) |
| BOSE | Speaker brand named for the electrical engineer who developed them |
| MARCONI | Guglielmo ___, Italian electrical engineer who shared the 1909 Nobel Prize in Physics (7) |
| GABOR | Dennis ___. Hungarian-born British electrical engineer who invented holography in 1947; Nobel Prize for Physics (1971) (5) |
| DENNISGABOR | Hungarian-born British electrical engineer who invented holography in 1948; Nobel Prize in Physics (1971) (6,5) |
| DAVID | ___ Packard American electrical engineer who co-founded Hewlett-Packard along with William Hewlett word craze |
| OLIVETTI | Camillo _, Italian electrical engineer who founded a typewriter factory (8) |
| CHEQUER | An old word for a chessboard; its pattern of alternating colours; or, one of the pieces used in draughts or in a game similar to halma (7) |
| ROTATION | A word for a spin of a planet, turn of a wheel or other axial turn; a cycle of alternating arable fields for crops or felling trees; a mathematical curl; or, any recurrent order (8) |
| FAIRDEAL | The principles of the Democratic party under the leadership of US President Harry S. Truman (4,4) |
| METAPHYSICS | The branch of philosophy that deals with the principles of being and knowing (11) |
