To what special use can a galton whistle be put to
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A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle that emits sound in the ultrasonic range, which people cannot hear but some other animals can, including dogs and domestic cats, and is used in their training. It was invented in 1876 by Francis Galton and is mentioned in his book Inquiries into Human Faculty and its Development,[1] in which he describes experiments to test the range of frequencies that could be heard by various animals, such as a house cat.
The upper limit of the human hearing range is about 20 kilohertz (kHz) for children, declining to 15–17 kHz for middle-age adults.[2] The top end of a dog's hearing range is about 45 kHz, while a cat's is 64 kHz.[3][4] It is thought that the wild ancestors of cats and dogs evolved this higher hearing range in order to hear high-frequency sounds made by their preferred prey, small rodents.[3] The frequency of most dog whistles is within the range of 23 to 54 kHz,[5] so they are above the range of human hearing, although some are adjustable down into the audible range.
A dog whistle (also known as silent whistle or Galton's whistle) is a type of whistle that emits sound in the ultrasonic range, which people cannot hear but some other animals can, including dogs and domestic cats, and is used in their training. It was invented in 1876 by Francis Galton and is mentioned in his book Inquiries into Human Faculty and its Development,[1] in which he describes experiments to test the range of frequencies that could be heard by various animals, such as a house cat.
The upper limit of the human hearing range is about 20 kilohertz (kHz) for children, declining to 15–17 kHz for middle-age adults.[2] The top end of a dog's hearing range is about 45 kHz, while a cat's is 64 kHz.[3][4] It is thought that the wild ancestors of cats and dogs evolved this higher hearing range in order to hear high-frequency sounds made by their preferred prey, small rodents.[3] The frequency of most dog whistles is within the range of 23 to 54 kHz,[5] so they are above the range of human hearing, although some are adjustable down into the audible range.
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Answer:
FATHER IS NOT RESPONSIBLE BUT HIS CHROMOSOMES ARE RESPONSIBLE
Explanation:
BECAUSE MOTHER'S CHROMOSOMES CONSIST XX CHROMOSOMES AND FATHER CONSIST OF XY CHROMOSOMES
FOR BOY-- XY
FOR GIRL-- XX
Y CHROMOSOMES IS ONLY SECRETED BY MALE PARENT!!
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