# Draw Your Own Electrical Toys!

You’re never too old to play with toys…especially when there’s science involved!  Consult the source for more details.

Special thanks to Jesslin Tan for the submitting the post

# Hydrodynamic Levitation!

On a stream of water you can levitate light balls of all sizes and even disks and cylinders. The mechanism is not the Bernoulli effect…
Want to make this at home:

My friend Blake from InnoVinci emailed me with a cool idea for a video and footage of levitating balls in water streams. Initially it was tough to explain the physics of what was going on. The standard Bernoulli effect relies on the object being completely immersed in the upward-flowing fluid. But in this case the water seems to form a single stream around the object and it’s deflected away and down from the stream. By Newton’s third law, the force on the water by the ball is equal and opposite to the force of the water back on the ball, pushing it up into the stream. There is a stable equilibrium position because if the ball moves into the stream, it “cuts off” the water going over the ball so it drifts out. If it drifts out too far, then lots of water passes over the ball, pushing it back into the stream.

Special thanks to Patreon Supporters:
Tony Fadell, Donal Botkin, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen

Support Veritasium on Patreon: http://ve42.co/patreon

Filmed by Raquel Nuno
Slow motion by Hollywood Special Ops http://hollywoodspecialops.com

# STEM Activities | Chemistry Minute

This video describes a simple rocket building activity that could be used as part of your STEM program.  The rocket is powered by the reaction baking soda and vinegar.  The video provides suggested trials that your students might investigate.

# How “Flying Death” Has Saved Hundreds of Lives

Curare, known as “flying death,” was used for centuries to make poisoned arrows. Scientists discovered how to use it to create life saving medical treatments that we still use today. Continue reading

# Potato Candle Demo

In this demonstration, a peeled potato is cut into the form of a candle and an almond slice is used as the candle’s “wick.” The teacher lights the almond slice on fire and it burns. The students see the object, and make observations about it. Continue reading

# Seeing the Invisible: Schlieren Imaging in SLOW MOTION -Veritasium

I first saw a Schlieren imaging setup around ten years ago in Melbourne. I was immediately fascinated by the way I could see the warm air coming off my hand. I hadn’t expected the currents to be moving that fast or to be so visible. Continue reading