In this video Paul Andersen compares and contrasts mechanical and electromagnetic waves. Both types of waves transfer energy through oscillations but mechanical waves requires a medium. Several examples of each type of wave are included.

How our ears hear different frequencies, and how they work with the brain to turn these into sounds which we understand. Biology - Being Human - Learning Points. Sounds are simply movements of air molecules. Our ears are extremely...

Discover the damage caused by shockwaves and how they are created by supersonic speeds. Physics - Waves - Learning Points. Waves of high pressure are produced when something moves through a medium at supersonic speed. At supersonic...

Find out how air resistance allows skydivers to land safely even from the greatest heights.
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Find out that sound waves always need a medium to travel through.
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When Vector Man doesn’t stick to the plan, Ian’s true character appears… This lesson will investigate the drag force (including air resistance and water resistance), draw a velocity-time graph for a free falling object and calculate...

My solutions to Free Response Question #5 from the 2019 AP Physics 1 Exam. This question is about standing waves in open and closed pipe instruments. Also included are my reflections on how to get perform better on the exam.

The most exciting SciFi movies have tons of space explosions. But how effective would explosions be in outer space with no atmosphere to carry the blast wave? Could a hypothetical explosion hurt you in space?

There's one thing every driver always want more of: Grip. Grip is the frictional force that holds the tires on the track, but crew chiefs like Steve Letarte describe it as a 'warm and fuzzy feeling' when you have it. Whether mechanical...

In this video, we explore the fascinating phenomenon of lightning. From its electrostatic discharge to the formation of thunder, we learn about the specific conditions required for lightning to occur. The video also discusses the...

I've always wondered what would happen if you lined up 10 megaphones in a row and yell into them, today I put that idea to the test! That literal feedback loop was crazy loud!

NASCAR tires don't have "air pressure" because they're filled with nitrogen. The culprit responsible for increasing tire pressure during a race is friction. Using dry nitrogen gas helps the team predict how hot the tire will get and how...

In this section, I talk about the properties of water, and what makes it unique. I talk about hydrogen bonds that result from the polar nature of water and why ice floats.



I also deal with diffusion and go into the 3 factors...

This video is an simple introduction to quantum mechanics that explains why there is still so much controversy over the meaning of this scientific theory.

From a tuning fork, to a speaker in slow motion, this is a close look at what sound is. Both linear and spherical wave fronts are animated. The human audible range is demonstrated.

The equations for the harmonic frequencies of open and closed pipe wind instruments are derived. An animation of a longitudinal standing wave pattern in a closed pipe is shown. Displacement and pressure nodes and antinodes are shown.