InfoSense, Inc., a small business that received early funding from the National Science Foundation, has developed a technology that helps keep sewer pipes clog-free.



The company, which is spun out of University of...

This video explains how speakers convert electrical signals into sound waves through the movement of a coil and diaphragm. It also mentions various types of speakers, from large ones used in theaters to smaller ones found in everyday...

Headphones work by converting electrical signals into sound waves through the use of an electromagnet and a cone. The diaphragm cone inside the driver assembly vibrates when triggered by an alternating current, creating sound waves that...

Thomas Edison, the man who invented the light bulb, also came up with the basic idea for how to record sound. He attached a needle to the diaphragm of a telephone receiver, which etched sound vibrations onto a quickly moving paper. This...

In this video, we explore the cochlea and the Organ of Corti by viewing it under light microscopy.<br/>

Sonar (sound navigation and ranging) uses sound waves to detect objects, similar to how a bat uses echo-location to navigate, and detect objects. It is the same principle with seismic data for non-invasive underground...

When you hear the roar of traffic, the bark of a dog, or your teacher's voice, you are experiencing sound. This program uses colorful animations to explore important characteristics of sound, including intensity, loudness, pitch, and...

Lesson 17 (Waves, Light, and Sound) of Dianna's Intro Physics Class on Physics Girl. Never taken physics before? Want to learn the basics of physics? Need a review of AP Physics concepts before the exam? This course is for you! Exercises...

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...

The tensor tympani muscle is a tiny muscle in the middle ear that helps dampens external sounds falling on the ear. The tensor tympani muscle originates from the Eustachian tube, which is also known as the auditory tube. From there, this...

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...

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...

In this video, I talk about how hearing takes place, starting with the soundwaves entering the ear, hitting the eardrum, and being transfered to the internal ear. Enjoy the process. I hope you can hear it :)

In this video, I show how Sound is accurately transferred to the inner ear. Since there is fluid inside the cochlea, impedance matching needs to take place. It happens due to the 1.3 to 1 ratio of movement between the maleus, incus and...

How do we hear? How does sound get transferred from the ear all the way to the brain? In this video, I go into all the juicy details. Listen up and have fun.

This nugget explains the source, generation, properties and discovery of electromagnetic waves.

This video is a lecture about seismic waves, specifically those produced by earthquakes. The video covers the basics of earthquakes, including where they originate and the different layers of the Earth. It also discusses the two main...

"Science of NFL Football" is a 10-part video series funded by the National Science Foundation and produced in partnership with the National Football League. In this segment, NBC's Lester Holt breaks down Isaac Newton's Third Law of...

Waves transfer energy from one place to another. You should already know how to describe them in terms of frequency, wavelength and amplitude In this video we’re going to look at the two ways they can be classified. Waves are produced as...

Can anything travel faster than the speed of light? Is it even possible for something to undertake the “speed of light” travel? And what if something can actually travel faster than light? What is Cherenkov radiation and how is it...

Noise Canceling Headphones Explained in One Minute

This video is a lecture about waves, specifically transverse and longitudinal waves. The speaker defines what a wave is and explains how it transfers energy without any matter being transferred. The video then delves into the differences...

The one where we shine a laser at a speaker and see what happens. I was not prepared for all the weird stuff that happened! This experiment is based on a video by Steve Mould. Check out his video hereref='https://youtu.be/C-V1uXeyGmg'...

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