Speed of Sound in Medium
| Medium | Speed |
| Hydrogen | 1284 |
| Air | 330 |
| Liquid mercury (20° C) | 1450 |
| Methyl Alcohol | 1189 |
| Water | 1402 |
| Polyethylene | 920 |
| Lead | 1210 |
| Silver | 2700 |
| Aluminum | 5000 |
| Beryllium | 12870 |
| Medium | Speed |
| Hydrogen | 1284 |
| Air | 330 |
| Liquid mercury (20° C) | 1450 |
| Methyl Alcohol | 1189 |
| Water | 1402 |
| Polyethylene | 920 |
| Lead | 1210 |
| Silver | 2700 |
| Aluminum | 5000 |
| Beryllium | 12870 |