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Speed of Sound Articles

Tag Archive for: speed of sound

speed of sound

Direct Echo-Based Measurement of the Speed of Sound

June 28, 2018
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42 Comments
Figure 1: Distance vs. time a firecracker report echoed off of a building at different distances on both a cold and a warm day.Introduction The…
https://www.physicsforums.com/insights/wp-content/uploads/2018/06/speedofsound2-1.png 135 240 Dr. Courtney https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png Dr. Courtney2018-06-28 15:56:312026-02-16 22:05:38Direct Echo-Based Measurement of the Speed of Sound
lightspeedrod

Why a Rigid Rod Can’t Send Faster-Than-Light Signals

September 25, 2015
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52 Comments
A perfectly rigid rod cannot send faster-than-light (FTL) signals because no such rod exists. Every real material transmits mechanical disturbances at…
https://www.physicsforums.com/insights/wp-content/uploads/2015/09/lightspeedrod.png 135 240 Multiple_Authors https://www.physicsforums.com/insights/wp-content/uploads/2019/02/Physics_Forums_Insights_logo.png Multiple_Authors2015-09-25 13:32:072026-07-31 10:51:52Why a Rigid Rod Can’t Send Faster-Than-Light Signals

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