Get smart curated videos delivered to your inbox every week.      
The Kid Should See This

A lemon-powered supercar and making the world’s largest lemon battery

Can you power an electric supercar with lemon-power? It depends on the lemon-power. In the video above, science YouTuber and former NASA JPL engineer Mark Rober attempts to fill a 48-kilowatt-hour battery with electricity to support the Volkswagon I.D. R electric supercar at the 2018 Pikes Peak Hill Climb.

In the mix: The world’s largest lemon battery, a lesson about how circuits work, what could be the most expensive glass of lemonade ever made, a party, a kid-made sprinkler system, a quick visit to Mars, and fails that inspired new battery-filling solutions: A zip line with regenerative braking and a few days of solar power with a twist.


And by the way, the Volkswagen ID R smashed the Pikes Peak Hill Climb Record in just under eight minutes. “The all-electric race car not only set a new record for EVs, but set the fastest time ever, by any car, even ones with high-performance, gas-gulping, engines.”

Previously from Mark: Liquid Sand Hot Tub.

Plus: More about circuits, including fourth graders who created a solar powered classroom, an Electric Dough Playdate, a plastic bottle water wheel power generator experiment, and the Stanford Solar Car Project: Racing on Sunshine.

Bonus: How do solar panels work? And how a failed invention lead to a potentially life-saving new idea.

🌈 Related videos

Designing solar panel walls that can recycle & heat greywater

Rion Nakaya

Solar and potential energy ‘swing thing’ mini machines

Rion Nakaya

How to make simple homopolar motor ‘race cars’

Rion Nakaya

How to Make the World’s Simplest Electric Toy Train

Rion Nakaya

The Solar Do-Nothing Machine by Charles and Ray Eames

Rion Nakaya

Here’s Where the Juice That Powers Batteries Comes From

Rion Nakaya

Fourth graders create a solar powered classroom

Rion Nakaya

Liquid Sand Hot Tub: Making a giant fluidized bed of sand

Rion Nakaya

What is Energy?

Rion Nakaya

Get 7 smart videos delivered every week.

 

Subscribe