Topic: molecules

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Resonance, forced vibration, and a tuning forks demo

A U-shaped fork of steel first invented in 1711 by trumpet player John Shore, the tuning fork is a tool produces a specific note that helps musicians keep their instruments in tune. They also are a great conversation ...

How Do Greenhouse Gases Actually Work?

The Earth and the Moon are essentially the same distance from the sun, yet the two rocks have very different surfaces thanks to our Earth's atmosphere. It shields us during the day, and at night, it traps enough heat ...

Physics Girl: Seven surface tension experiments

This Physics Girl video highlights seven different surface tension experiments that you can easily try at home or in the classroom. Have any of these around? A plate, a glass, a penny, an index card, a paperclip, an e...

Stanford researchers solve the mystery of the dancing droplets

This beautifully-made video about a beautifully-colored series of experiments from a Stanford research team showcases how a observing a few droplets of food coloring -- made of water and propylene glycol -- have led t...

Cal Academy: How to Observe a Meteor Shower

Get some blankets, find a dark hill on a dark night, make sure you've napped, and put away that smartphone. The California Academy of Sciences has some excellent tips for seeing shooting stars, more accurately known a...

Deep Look: Banana Slugs and Secret of the Slime

Slime can trigger an immediate ewwwww! reaction, but ooey gooey slime is actually a rather brilliant, problem solving substance. One of the animals that depends on its slime can be found among the gigantic redwood for...

ExpeRimental: The Soap Boat Water Experiment

Send molecules flying with this super fun and easy science experiment for kids (and adults): The Soap Boat Water Experiment from The Royal Institution's ExpeRimental series. Comedian Rufus Hound and his son Alby make ...

It’s Okay to Be Smart: Why Do Clouds Stay Up?

Clouds are filled with so many water droplets that they're actually heavy... like 100 elephants heavy or a 747 airplane heavy! So why don't clouds fall out of the sky? It's Okay to Be Smart's Joe Hanson explains every...

This is NOT timelapse: the Aurora Borealis in real time

This breathtaking video of the Aurora Borealis is not a timelapse video — this is what it looks like in real time. It was filmed in Yellowknife, Northwest Territories, Canada by astro-ph...

Celebrating Crystallography: An adventure in structural analysis

One of the great innovations of the twentieth century is likely not well-known, but this video from the Ri Channel is looking to change that: This is X-ray crystallography.  Discovered in 1913 by William and Lawren...

It’s Okay To Be Smart: What is wind?

We were just watching how wind (and so many other things) can get going with the spin of the Earth, now let’s go deeper and find out more about what wind is with PBS’ Dr. Joe Hanson of It’s Okay To Be Sma...

Instant Ice Crystals – The Secret Life of Ice

From the BBC’s The Secret Life of Ice, an experiment for your DIY/ Gotta Try This list: Dr Gabrielle Walker and Dr Andrea Sella investigate the molecular make up of ice crystals. They use supercooled water to...

Kari Byron makes a cloud in a bottle

How do you make a cloud? On her show, Head Rush, Mythbuster’s Kari Byron demonstrates how clouds are formed by making one in a bottle. For this experiment, you can use a bicycle pump with a rubber stopper atta...

Oskar Fischinger’s Optical Poem

Optical Poem, an abstract piece of stop-motion history, was made in 1938 by German-born Oskar Fischinger, an avant-garde animator, filmmaker and painter. The familiar music is Franz Liszt’s Hungarian Rhapsody No...

The circulatory system: How blood is transported through our bodies

The circulatory system consisting of the heart, arteries, capillaries, and veins, is the pumping mechanism that transports blood throughout the body. In the heart, the left ventricle contra...

The Arrow of Time – Wonders of the Universe

Professor Brian Cox uses the Perito Moreno glacier in Patagonia, Argentina to help explain the Arrow of Time; a concept that tells us why sequences happen in the order they do. From wikipedia: “Entropy is t...

They Might Be Giants: Meet the Elements

If only I’d seen this when I was a kid, high school chemistry would have made more sense! And maybe I would have been loudly singing, “Elephants are mostly made of four elements!” like some other co-...

Flottille: Unfolding micro-origami by Etienne Cliquet

These small, slowly-unfolding, precisely cut pieces of silver paper -- a sort of micro-origami -- are by French artist Etienne Cliquet. The kid was riveted. Just two to three centimeters wide, Flotille explores both a...