Humans can only hear a certain range of sound frequencies. Discover the sounds we can't hear and why they can be useful. Physics - Waves - Learning Points. The frequency of sound waves determines whether we can hear them. High-frequency...

This video covers: - How sound waves travel through materials - The idea that sound waves are longitudinal - How wavelength changes with speed - The structure of the human ear and how it works - How the range of human hearing changes...

Are you curious about how hearing works? From the sound waves entering to the tympanic membrane vibrating, to the malleus, incus, and stapes doing their job, all the way to what happens in the...

One focus of the research program is to better understand how human disturbance and noise might impact giant pandas, both in the wild and at the zoo.

Space is full of radio waves, plasma waves, magnetic waves, gravitational waves, and shock waves, all of which can travel in space without a medium. These waves are recorded by instruments that can sense these waves, and the data is...

Space is full of radio waves, plasma waves, magnetic waves, gravitational waves, and shock waves, all of which can travel in space without a medium. These waves are recorded by instruments that can sense these waves, and the data is...

Whether it is the sight of colorful flowers, or the smell of freshly baked cookies, our senses are constantly at work. Breathtaking video footage and three-dimensional animations illustrate how complex sensory organs function. Special...

Do you need to learn how to find a mean, median, mode and range of a data set? In this video, I will guide you through an explanation of the terms and show you how to find and calculate them using a data set. A dot plot is used to help...

It explains the structure and functioning of human ear and the range of hearing.

Learn how dolphins use ultrasound to communicate.
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Microphones keep getting smaller and smaller, but have you ever asked what it would be like to have a bigger one in the form of a shirt? And though we tend to incorrectly think that we’re having two-way conversations with our pets, we...

Microphones keep getting smaller and smaller, but have you ever asked what it would be like to have a bigger one in the form of a shirt? And though we tend to incorrectly think that we’re having two-way conversations with our pets, we...

Pupil outcome: I can explain how sound waves cause sounds to be heard, and describe the range and limits of human hearing. Key learning points: - Sound waves cause our eardrums, tiny bones within our ears, and the cochlea to vibrate. -...

Move along the decibel range from silence to the loudest noise ever.
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What if we could hear nature's ultrasonic communication -- and talk back? From a bat's shrill speech to a peacock's infrasound mating call, conservation technology researcher Karen Bakker takes us through a sound bath of animal noises...

Is outer space really the silent and lifeless place it's often depicted to be? Perhaps not. Astrophysicist and musician Matt Russo takes us on a journey through the cosmos, revealing the hidden rhythms and harmonies of planetary orbits....

This is a lecture video discussing the properties and uses of ultrasound. The video begins by explaining the frequency of sound waves detectable by the human ear, and how ultrasound waves operate beyond the human hearing range. The video...

A high-frequency hearing test pits young ears against old in the first Battle of the Ages contest. ➡ Subscribehttp://bit.ly/NatGeoSubscribe' target='_blank' rel='nofollow'>Subscribe About Brain Games: Using a series of experiments,...

Acoustic ecologist Gordon Hempton has spent the past 35 years recording natural soundscapes. His work has taken him around the world and into some of the least densely populated places. ➡ Subscribehttp://bit.ly/NatGeoSubscribe'...

One focus of the research program is to better understand how human disturbance and noise might impact giant pandas, both in the wild and at the zoo.

One focus of the research program is to better understand how human disturbance and noise might impact giant pandas, both in the wild and at the zoo.

The decibel is used to measure sound levels. It is represented by dB and is widely used in signals, communication, and electronics. The term decibel can be used to express an absolute value or a change in value (+1 dB or -1 dB). Decibels...

The decibel is used to measure sound levels. It is represented by dB and is widely used in signals, communication, and electronics. The term decibel can be used to express an absolute value or a change in value (+1 dB or -1 dB). Decibels...

American English pronunciation involves a wide range of sounds. The Stop T sound is among the trickiest. If you’re working on your pronunciation, you’ll want to master this sound and understand how to use it. American English...