Theory & Thoughts

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precisely 331.1095...

Thus, dv/dT = 331.1095/(2*sqrt*273)  * (T_k)^-1/2:

Where T is the temperature in Kelvin. 

So, at STP (0 C), the ROC of sound speed w.r.t temperature is: 0.6064 m/s.  

Thus, for the May 14 tests at which we had a path length of 7.3 meters (estimated), if the temp goes from 0C to -1C, 

the sound speed drops to 330.5025 m/s . 

Thus, we have a roundtrip sound delay time of: 

273K: 0.0220471 seconds

272K: 0.0220875 seconds

Delta_t = 4.04 E-5 seconds