| RESONATOR | Hollow chamber which allows the oscillation of electromagnetic waves (9) |
| BRADLEY | Scientist known for his discovery of the aberration of light and for observing the oscillation of Earth's axis (nutation), who succeeded Edmond Halley as Astronomer Royal in 1742 (7) |
| ATOMIC | Timepiece driven by the oscillations of a molecule, ... clock |
| IMPULSE | In physics, each of the oscillations making up a wave (7) |
| SHORTWAVE | Transmission and reception of information by means of electromagnetic waves about 10 to 80 m (33 to 262 feet) in length having frequencies of approximately 29.7 to 3.5 megahertz. (9) |
| RADIATION | Help turnover in allowance of electromagnetic waves (9) |
| CYLINDERS | Hollow chambers in which pistons slide in an engine (9) |
| TELEGRAPH | Any device or system that allows the transmission of information by coded signal over distance, or the device for transmitting printed information by wire or radio wave. (9) |
| SPREADSHEET | Computer program which allows the generation of tables of arithmetic calculations (11) |
| BLUESHIFT | A decrease in wavelength with an increase in frequency of an electromagnetic wave (9) |
| CASHPOINT | Machine which allows people to withdraw money from their bank account (9) |
| FLASHCUBE | Device attached to film cameras which allows four bursts of illumination |
| HOMERUN | In baseball, a hit which allows the batter to make a complete circuit of the bases (4,3) |
| PIANOROLL | The perforated paper scroll which allows a player piano to exactly reproduce an original performance |
| GREENCARD | Government permit which allows a foreign national to live and work in the US (5,4) |
| HEADSPACE | Goes on walk which allows them to think clearly |
| BLUBBER | Thick layer (10cm) of body fat which allows the walrus to stay warm in cold water |
| EXITVISA | Document which allows the holder to leave a country |
| RHEOSTAT | Device which allows the current in an electrical circuit to be adjusted (8) |
| COLOUR | Any one of the spectral hues determined by ocular interpretation of electromagnetic waves whose principles can be demonstrated by means of a Newton disc (6) |
