Speed of Sound Temperature Calculator
The speed of sound in air is significantly influenced by temperature. Here’s a comprehensive table summarizing the key information about the relationship between temperature and the speed of sound:
Speed of Sound vs. Temperature
| Temperature (°C) | Speed of Sound (m/s) |
|---|---|
| -40 | 306.2 |
| -20 | 318.9 |
| -10 | 325.2 |
| 0 | 331.3 |
| 10 | 337.3 |
| 15 | 340.3 |
| 20 | 343.2 |
| 25 | 346.1 |
| 30 | 349.0 |
| 40 | 354.7 |
| 50 | 360.3 |
| 100 | 386.9 |
Key Points
- Temperature Dependence: The speed of sound increases as the air temperature increases15.
- Formula: The speed of sound (c) in air can be calculated using the formula:
c=331.31+T273.15c=331.31+273.15T
where T is the temperature in °C5. - Sea Level: At sea level and 15°C, the speed of sound is approximately 340.3 m/s4.
- Pressure Independence: The speed of sound in an ideal gas depends only on temperature and composition, not on air pressure or density8.
- Humidity: The effect of humidity on the speed of sound is negligible and can often be disregarded5.
- Altitude: As altitude increases, temperature generally decreases, which in turn affects the speed of sound6.
- Practical Applications: Understanding the speed of sound is crucial in various fields, including aviation, acoustics, and meteorology10.
Remember that these values are for dry air at standard atmospheric pressure. The speed of sound can vary slightly in different conditions or mediums.