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What is the use of galton whistle?
it is the frequency of sound between 5000hz to 42000hz. invented by sir frances Galton 1822 to 1922,was one of the earliest devices used in testing hearing.
Is sound sound?
Yes, when the loudness is below 85 dBSPL.
How many hertz are needed for a sound to be infrasonic?
Sound below about 20 Hertz (20 cycles per second) is considered infrasonic. A link can be found below.
What does a green tree snake sound like?
Click on the link below for information.
Is sound below 20hz called ultrasound?
No. Sound ABOVE 20,000 hz is ultrasound.
Do below and blow rhyme?
No, "below" and "blow" do not rhyme. "Below" is pronounced as buh-LOH, with a long O sound, while "blow" is pronounced as BLOH, with a short O sound.
Do now and sound rhyme?
No. Please see the related questions below for "What rhymes with now?" and "What rhymes with sound?"
Does below have a long o sound?
It would be helpful if you provided the word or phrase you are referring to. Without that information, I am unable to determine if it has a long "o" sound.
What is the difference between ultrasonic and infrasonic sound waves?
The sound waves which are below the audible sound are called infrasonics(<20Hz) and The sound waves which are above the audible sound are called ultrasonics(>20KHz).
Does below have a vowel digraph with a short vowel sound?
Yes. The digraph OW has a long O vowel sound.
What is the speed of sound in dry air at 20C?
The speed of sound at 70oC is 371.333m/s. Refer to the related link below for a calculator for the speed of sound in air.
What is the difference between transonic and subsonic speeds?
Transonic being past the speed of sound and subsonic is below the speed of sound.
