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Describe infrasonic and ultrasonic waves and explain why humans can not hear them?
The human ear cannot detect all possible frequencies. It has evolved to detect frequencies of sounds that are the most useful to humans, and has a maximum frequency range of about 20Hz to 20kHz, which decreases as you get older, particularly at the higher end. Infrasonic describes sounds that are too low in frequency to be heard by the human ear, and ultrasonic describes sounds that are too high in frequency to be heard by the human ear. These sounds cannot be heard by the human ear because they are outside of its range of capability.
What is the Approximate range of audible frequencies for most humans?
HIGHEST AUDIBLE FREQUENCY IS 25Hz..WHILE THE LOWEST AUDIBLE FREQUENCY IS 15Hz
What are the uses of infrasonic sound?
ultrasonic means their frequency is too high for us to hear, infrasonic means their frequency is too low for us to hear. This is analogous to the electromagnetic spectrum, where ultraviolet light has too high a frequency for us to see, and infra-red light has too low a frequency for us to see.
Why can only human see part of the electromagnetic spectrum?
The frequency of light that the sun gives off most is in the visible spectrum. Over the evolution of humans and animals, this is the frequency our eyes have grown accustomed to. It's
Which frequency is the human ear most sensitive to?
the ear is most sensitive around 2-5 kHz as noted in http://www.silcom.com/~aludwig/EARS.htm
Describe infrasonic and ultrasonic waves and explain why humans can not hear them?
The human ear cannot detect all possible frequencies. It has evolved to detect frequencies of sounds that are the most useful to humans, and has a maximum frequency range of about 20Hz to 20kHz, which decreases as you get older, particularly at the higher end. Infrasonic describes sounds that are too low in frequency to be heard by the human ear, and ultrasonic describes sounds that are too high in frequency to be heard by the human ear. These sounds cannot be heard by the human ear because they are outside of its range of capability.
What is the Approximate range of audible frequencies for most humans?
HIGHEST AUDIBLE FREQUENCY IS 25Hz..WHILE THE LOWEST AUDIBLE FREQUENCY IS 15Hz
What are the Example of sounds of frequency?
The frequencies of sounds that can be heard by most people are between 20 and 20,000 Hz. Sounds outside of this range are possible, but can no longer be heard by humans.
How do you find out the modal range?
if data is in the form of frequency distribution then the modal range is the interval containing the highest frequency of observations
Is there a device to detect low frequency infra sound waves?
The most common such devices are the seismographs and Hydraphones.
What is the order of frequency of the visible light?
Most humans (their eyes, to be more specific) can detect wavelengths between roughly 390 nm to about 750 nm. That means that the frequency band is roughly 400 THz - 790 THz (Terahertz) Waves' frequency and wavelength are connected by the relationship vw = λf In other words, wave velocity equals wavelength multiplied by frequency. All EM waves travel at a speed which is equal to c. In the case of EM radiation, we know that vw = c (speed of light, exactly 299,792458 m/s), therefore we can easily calculate the frequency. Of course, you have to convert the values in the first place. Some animals can detect a wider range of wavelenghts.
Why humans not listen to very low frequency vibrations?
Most humans are incapable of hearing frequencies slower than about 20 Hz.
In most cases the frequencies used by wireless networks are in what frequency band?
The common wireless frequency is 2.4 Ghz. Some wireless networks may use the 5 Ghz frequency range.
What are the uses of infrasonic sound?
ultrasonic means their frequency is too high for us to hear, infrasonic means their frequency is too low for us to hear. This is analogous to the electromagnetic spectrum, where ultraviolet light has too high a frequency for us to see, and infra-red light has too low a frequency for us to see.
What animals can hear sounds with too high a frequency for humans to hear?
Most animals can, but dogs can definitely hear them.
What frequency range is shared by most new cellular telephones and portable phones and wireless Lan?
2.4-2.4835GHz
What is the main use of frequency modulation?
Frequency modulation is used to broadcast radio waves to receivers. The most common use of it is in FM radio, which contains a range of radio frequencies.
