Physics Dictionary
O
|  |  | |
| object |  |  | 
| object distance |  |  | 
| object lens |  |  | 
| octave |  |  | 
| ohm (  ) |  |  | 
| Ohm's Law |  |  | 
| ohmmeter |  |  | 
| opaque body |  |  | 
| open circuit |  |  | 
| open tube |  |  | 
| optical fibre |  |  | 
| optical spectrum |  |  | 
| optically denser medium |  |  | 
| optically thinner medium |  |  | 
| optics |  |  | 
| orbit |  |  | 
| order of magnitude |  |  | 
| oscillation |  |  | 
| oscillator |  |  | 
| oscilloscope |  |  | 
| output |  |  | 
| overtone |  |  | 
| oxygen (O) |  |  | 
| ozone (O3) |  |  |