04-21-2020, 07:39 AM
(This post was last modified: 04-21-2020, 10:23 AM by solid.
Edit Reason: references
)
Dear Julien.
For a test tube with L = 23.7 cm and D = 2.8 cm your program gives f = 375.0 Hz and c_air = 381 m/s, to high...
Strange, but the standard "Audio spectrum" of phyphox gives f = 351 Hz (c_air = 345 m/s) - much more acceptable
By the way the resonance peak of our "Resonance curve" gives f = 362 Hz ...
It is very important to measure the temperature around the bottle of wine to be opened. I would suggest to add a feature to your program: determination of the temperature from c_air using a simple formula t = (c_air/20)² - 273 (°C) .
A+
References:
Peter Froehle, "Finding the Outdoor Temperature Using a Tuning Fork and Resonance",
The Physics Teacher 44, 358 (2006); https://doi.org/10.1119/1.2336137
Jeffrey D. Goldader, "Determining Absolute Zero Using a Tuning Fork",
The Physics Teacher 46, 206 (2008); https://doi.org/10.1119/1.2895669
For a test tube with L = 23.7 cm and D = 2.8 cm your program gives f = 375.0 Hz and c_air = 381 m/s, to high...
Strange, but the standard "Audio spectrum" of phyphox gives f = 351 Hz (c_air = 345 m/s) - much more acceptable
By the way the resonance peak of our "Resonance curve" gives f = 362 Hz ...
It is very important to measure the temperature around the bottle of wine to be opened. I would suggest to add a feature to your program: determination of the temperature from c_air using a simple formula t = (c_air/20)² - 273 (°C) .
A+
References:
Peter Froehle, "Finding the Outdoor Temperature Using a Tuning Fork and Resonance",
The Physics Teacher 44, 358 (2006); https://doi.org/10.1119/1.2336137
Jeffrey D. Goldader, "Determining Absolute Zero Using a Tuning Fork",
The Physics Teacher 46, 206 (2008); https://doi.org/10.1119/1.2895669