| NIELS | First name in physics |
| EINSTEIN | Big name in physics |
| XRAY | Discovery of Wilhelm Roentgen, which earned him the first Nobel Prize in Physics in 1901 |
| IMPETUS | In physics, the force that sets a body in motion or that tends to resist changes in its motion |
| TWO | First of the "magic numbers" in physics |
| WAVEFRONT | Any one of the concentric circles in a ripple, in physics |
| IMPULSE | In physics, a force producing a finite change of momentum, described in Newton's second law (7) |
| RONTGEN | Scientist awarded the first Nobel Prize in physics for discovery of x-rays (7) |
| NIELSBOHR | Winner of the Nobel Prize in Physics in 1922 (5,4) |
| MAXPLANCK | German physicist who first formulated quantum theory, winner of the 1918 Nobel Prize in Physics (3,6) |
| ENRICOFERMI | Italian atomic physicist who won the Nobel Prize in Physics in 1938 (6,5) |
| EVENT | Occurrence defined in physics, especially relativity, as a single point in space-time (5) |
| RYLE | Martin -; astronomer awarded the 1974 Nobel Prize in Physics with Antony Hewish for research in radio astrophysics (4) |
| RAYLEIGH | 3rd Baron -; title of John Strutt, scientist awarded the 1904 Nobel Prize in Physics with William Ramsay for his part in the discovery of argon (8) |
| ESAKI | Leo ___, Japanese physicist who shared the Nobel Prize in Physics in 1973 with Ivar Giaever and Brian David Josephson |
| LAUE | Winner of the Nobel Prize in Physics in 1914 |
| OMEGA | Last Greek letter whose symbol in upper-case is used to denote ohm in physics or the end or limit of a set (5) |
| EUTECTIC | In physics, a mixture in such proportions that the melting point is as low as possible (8) |
| COULOMB | Military engineer whose name is given to a unit in physics (7) |
| PLASMA | In physics, one of the four fundamental states of matter; or, another name for bloodstone (6) |
