Topic: gas

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Why is water one of the weirdest things in the universe?

Every molecule of water on the Earth and inside you or any other living thing has existed for billions of years. After it came to Earth, that water has been cycling through rocks, air, animals, plants, and back again....

Don’t extinguish a metal fire with water

How do you extinguish burning magnesium? In this video from the Royal Institution, science presenter Steve Mould demonstrates what happens when you try to extinguish a metal fire with a CO2 fire extinguisher or water—...

How is black fire made?

This is not a special effect. This is black fire. When you mix a sodium street light or low-pressure sodium lamp with a flame, you'll see a dark flame thanks to the sodium and some excited electrons. "It's strange ...

The Beauty of Flames

The Beauty of Flames captures some extraordinary-looking flames, "the visible, gaseous part of a fire," in this video from Yan Liang's Envisioning Chemistry science and art series. The flames were created by Professor...

What is fire? Is it a solid, a liquid, or a gas?

Sitting around a campfire, you can feel its heat, smell the woody smoke, and hear it crackle. If you get too close, it burns your eyes and stings your nostrils. You could stare at the bright flames forever as they twi...

How to make a rocket

"What's the best scientific formula for a powerful rocket with oxidizer and fuel?" In this video clip from Bang Goes The Theory Series 5, via BBC Earth Lab, we get a quick peek at the mix of chemistry and physics that...

What happens to balloon animals in liquid nitrogen?

How can you fit a bunch of balloon animals into a small container? Add some liquid nitrogen into the mix, as demonstrated in this video by Real Physics Live, the YouTube channel for Texas A&M University's Department o...

How NASA’s Parker Solar Probe Will Touch the Sun

In the early hours of August 12, 2018, NASA's Parker Solar Probe launched from Florida's Cape Canaveral Air Force Station, beginning a historic seven-year journey to 'touch the sun.' From The New York Times: The P...

Use a 9-volt battery to break water into its elemental components

In the 1987 miniseries The Ring of Truth: An Inquiry into How We Know What We Know, Philip Morrison proves that a water molecule is composed of two hydrogen (H) atoms & one oxygen (O) atom with a simple demonstration....

It’s Okay to Fart: What are farts made of and why are they funny?

Farts can be giggle-worthy and gross, but every person on Earth farts, as well as lots of animals... so why don't we know more about them? Even people throughout history have wrestled with what farts are and how they ...

Does ‘the ozone hole’ hold the secret to fixing climate change?

We don’t hear much about 'the hole' in the ozone layer anymore. That’s because we’ve all but fixed it, thanks to consumer choices and a massive international agreement called the Montreal Protocol. Can we learn anythi...

Fistful of Stars, a 360° experience through the lens of the Hubble Telescope

Travel from our home planet out into the cosmos with the Hubble Telescope, venturing into the heart of the Orion Nebula where a star is being born. This is Fistful of Stars, a short virtual reality (VR) film directed ...

How Dangerous Are The Northwest’s Volcanoes?

In Oregon, Washington and Idaho, magma has erupted out of the ground in at least 25 places in the last 10,000 years, a mere instant in the lifetime of volcanoes that can be hundreds of thousands of years old... But wh...

How To Capture A Scent, an easy science experiment

If you've ever wanted to capture your favorite smell—a rose, cinnamon, a pine tree, a campfire—this easy experiment might be able to help. From Science Friday: Aha! Here's how to capture a scent. With the help of some...

Are there aliens out there?

Life began on the Earth around 3.5 billion years ago. Has the same thing happened somewhere else in the universe? On an icy moon? On a planet in the Goldilocks zone of a distant star? Imagine if hypothetical aliens we...

Where does Space begin?

How far away is Space from where you are at this moment? How much closer is it when you're flying in a plane? And how close is the International Space Station to Earth if we can spot it in the sky? Travel up, up, u...

The Engineering of the Drinking Bird

How is a drinking bird like a heat engine? In this video from Engineer Guy Bill Hammack, we can see how this famous drinking/dipping bird toy "exploits a temperature difference to convert heat energy to a pressure dif...

Flight through the Orion Nebula in visible and infrared light

Explore the Orion Nebula, as seen with both visible light from the Hubble Telescope and infrared light via the Spitzer Space Telescope, with the help of this three-dimensional fly-through. The computer-generated visua...

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