Pendulums and Gravity

Pendulums and Gravity

In the video above, I talk about how pendulums actually work. If you haven’t watched it, the principle is simple: an object is suspended from a fixed point and allowed to swing back and forth – the mass of the object and the time it takes to swing back and forth are independent of each

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Happy Earth Day! – 2018

Happy Earth Day! – 2018

Today is Earth Day! We spend this day celebrating Earth, raising awareness of things threatening the planet, and learning how to fix those problems! This year’s theme is plastic pollution and the threat it poses to humans and other life. Plastics can be very useful, but the huge amount that is discarded incorrectly and dangerously

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Supernovas!

Supernovas!

Believe it or not, supernovas have been known to humans for thousands of years. That’s not to say that ancient civilizations knew exactly what was happening when they saw them, but they were witnesses to some of the most powerful events in our universe. When certain stars reach the end of their lifetime, they explode

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Bernoulli’s Principle

Bernoulli’s Principle

Daniel Bernoulli was a Swiss mathematician and physicist in the mid-1700s. He excelled in the fields of statistics and probability, but also was influential in applying mathematics to physical mechanics. Particularly, he is known for his work in fluid dynamics, now known as Bernoulli’s Principle. Most simply, Bernoulli’s Principle is a derivation of the conservation

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Pluto: Planet or NOT!

Pluto: Planet or NOT!

While Pluto is no longer a full-sized planet, it still has many properties that we care to learn about. It’s still the largest object in the Kuiper Belt, and by volume it’s the largest of the dwarf planets in our solar system. And its unprecedented popularity has cemented itself into the hearts of the public,

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Bubble Hurricanes

Bubble Hurricanes

CAUTION: This experiment uses a hot plate. Please use adult supervision if attempting to recreate. Bubbles are a great resource for fun and physics. They provide interesting insight for optimization and can even be used as models for atmospheres. Scientists are able to use bubbles as models for the atmosphere because they are very thin

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Can you Freeze Antifreeze?

Can you Freeze Antifreeze?

CAUTION: Antifreeze is a very powerful chemical that, if ingested, can cause serious illness or death. Do not attempt to use it without adult supervision. All appropriate safety precautions have been taken for the filming of this video. If you are from a colder part of the world, then you know how important antifreeze is.

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How to Supercool Water

How to Supercool Water

Water is usually pretty predictable. At standard pressures it will boil at 100˚C and freeze at 0˚C. However, under special circumstances it might surprise you. Dihydrogen monoxide can become supercooled, dropping below 0˚C while maintaining the liquid phase of matter. Here’s how: Acquire distilled or purified water. Fill an empty bottle with tap water (this

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The Coolest Molecules

The Coolest Molecules

CAUTION: This experiment uses dry ice (-109˚F) and liquid nitrogen (-321˚F). Proper safety equipment should always be used when handling these substances. Physics tells us that pressure, volume and temperature are all linked when talking about gases. So what does this have to do with solid carbon dioxide (dry ice) and liquid nitrogen? When dry

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The Space Between Planets

The Space Between Planets

Have you ever really sat down to think about how much space there is in the universe? It’s pretty inconceivable, but there are some useful tools that can help put things in perspective. You’ve already seen a scale model of our solar system by mass, so here is a model of the space between our

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Free Energy or Toy

Free Energy or Toy

Electricity is one of the most useful discoveries of our relatively recent history. It lights the rooms we hang out in, give power to some vehicles and allows for communication across vast distances. In 1800, Italian physicist Alessandro Volta discovered that particular chemical reactions could produce electricity so he constructed the voltaic pile (an early

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Pendulum Waves

Pendulum Waves

You’ve already seen the way a no-flinch pendulum works, so now we are changing it up. This contraption is host to many pendulums next to each other but not touching. When you raise them up and let them go all at once, you can see something truly mesmerizing. They will all start to fall at

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