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.
The Galton Whistle was created in 1951-07.
Ray Galton's birth name is Raymond Percy Galton.
Francis Galton.
Galton Institute was created in 1908.
Jim Galton was born in 1945.
Galton Bridge was created in 1829.
The Galton Case was created in 1959.
Ray Galton is 6' 4".
Samuel Tertius Galton died in 1844.
Francis Galton was born in Birmingham, England.
Francis Galton inventede the quantitive method
wolf whistle