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Results tagged with air
Search options questions only
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user 73
8
votes
2
answers
291
views
Are "acoustic waves" the same as "mechanical waves"?
In air and most liquids, an acoustic wave propagates with a longitudinal component only (same direction as propagation); the transversal component does not exist because the air/liquid viscosity is not … strong enough to move the air particles toward the perpendicular direction of propagation. …
9
votes
1
answer
72
views
Could mosquitoes be attracted to the sound of their blood host?
At long-range, female mosquitoes mostly rely on CO2 to find blood host by flying up-wind following the odor plume (ref). They are also known to have excellent auditory organs (ref1, ref2) involved in …
- 139
11
votes
1
answer
472
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Is there any insects which produce sound with their mouth part?
Many animals produce sounds with the help of their lungs to make their vocal folds vibrate, and then use their vocal tract to amplify some frequencies.
Is there any insects which sounds are diffused a …
- 113
4
votes
1
answer
60
views
Shotgun microphone position for low-level sounds in a tube
I would like to record extremely low sound-level (at ~200-300Hz), produced by an insect which is located at the end of a plastic tube, with a very-sensitive low-noise shotgun pressure microphone (this …
- 4,161
14
votes
1
answer
156
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Do ultrasound mosquito-repellents work?
There are many anti-mosquito devices for sell that use ultra sounds as a repellent (e.g. see here).
Is it supported by science?
- 4,161
8
votes
1
answer
47
views
Are acoustic-based methods used in insect pest control?
While semio-chemical repellents are widespread to tackle insect pest, acoustic-based methods seem to be less commun. I only found this example where it has been used as a commercial tool by disrupting …
- 3,850
20
votes
3
answers
184
views
What are the main differences in recording solid-borne, water-borne and air-borne sounds?
Strickly speaking, it involves any substrates where the acoustic waves propagate: liquids (water), gas (air) and solids (e.g. plant stem, soil). … In particular, what are the main differences to be taken into account when recording solid-borne, water-borne and air-borne sounds? …
- 4,161
11
votes
1
answer
58
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What kind of light do you use in the lab to avoid any sound noise?
It can be tricky to have a perfect silence in an experimental space, even if soundproofed. But it is required especially when low sound-level communications are studied such as with arthropods. One o …
- 471