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The tree will make a sound, even if nobody heard it, simply because it could have been heard. The answer to this question depends on the definition of sound. We can define sound as our perception of air vibrations. Therefore, sound does not exist if we do not hear it. When a tree falls, the motion disturbs the air and sends off air waves.
Cold weather will cause some trees to shatter by freezing the sap, because it contains water, which expands as it freezes, creating a sound like a gunshot. [ 1 ] [ 2 ] The sound is produced as the tree bark splits, with the wood contracting as the sap expands.
Measured sound emissions by plants as well as differential germination rates, growth rates and behavioral modifications in response to sound are well documented. [1] Plants detect neighbors by means other than well-established communicative signals including volatile chemicals, light detection, direct contact and root signaling.
For example, sound moving through wind will have its speed of propagation increased by the speed of the wind if the sound and wind are moving in the same direction. If the sound and wind are moving in opposite directions, the speed of the sound wave will be decreased by the speed of the wind. The viscosity of the medium.
When a bolt strikes a tree it super-heats the sap throughout the tree and water in the sap turns to steam. "This happens in a split second," says Q13 FOX News Metoerologist M.J. McDermott.
Knots do not necessarily influence the stiffness of structural timber; this will depend on the size and location. Stiffness and elastic strength are more dependent upon the sound wood than upon localized defects. The breaking strength is very susceptible to defects. Sound knots do not weaken wood when subject to compression parallel to the grain.
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But since tree damage can be extensive, filing a claim does make sense in many cases. If you have proof that your neighbor knew that their tree was a risk, that’s information you should provide ...