Amelymeloptical Illusion, a seemingly simple yet enthralling rings performance from French juggler Lindzee Poi.

Next, watch French “magic” champ Yann Frisch and Sylvain’s bulles de savon géantes.

via Daily Picks and Flicks.

Shape, a film about design and how it can change our experiences in the spaces that we live. “If for one day you had the power to make your world work better, what would you change?” Presented by Pivot Dublin and Dublin City Council, directed & designed by Johnny Kelly, and written by Scott Burnett. Explore more at MakeShapeChange.com, think design.

Related watching: design.

via Vimeo.

Wet clay on a spinning potter’s wheel transforms with every turn in this improvisational form of art. The video runs a bit long at 15m24s, but the kids still wanted to include it here thanks to the hypnotic patterns that made us want our own potter’s wheel.

In the archives: pottery, drawing images in sand, and mind-blowing Chladni Patterns.

Thanks, @LaniHarmon.

Circus performer Angelica Bongiovonni rides a Cyr wheel in Cirque Éloize. According to their site, Bongiovonni is one of around 100 acrobats that practice the Cyr wheel in circuses, street performances, and performing art schools around the world. Regarding her first attempt at riding, she explains: 

It really wasn’t fun. [laughs] It’s kind of like learning how to walk again or ride a bike. It’s a really weird feeling and I just fell all the time. I had so many bruised hips and knees. I’d lose control of the wheel and almost hurt people in the studio. I actually hit myself in the face and got a huge busted lip… It takes hour and hours of practice…

There’s more practice and more tricks in the archives, including Selyna Bogino foot juggling five basketballs. Bonus spinning: camera on a hula hoop.

Travel back in time to Ancient Greece where revolutionary thinkers – from Thales, Pythagoras, Democritus and Aristotle to Euclid, Archimedes, and Hypatia of Alexandria – helped define the rules and language of mathematics.

For Greek thinkers, maths wasn’t simply a means of calculating amounts but a way of testing reality and understanding the true nature of the world around them. Indeed, Pythagoras is believed to have coined both the words “philosophy” (“love of wisdom”) and “mathematics” (“that which is learned”).

From the Ri Channel, Phoebe Halstead, and 12foot6, this is the two-minute story of math’s great Greek Legacy: How the Ancient Greeks shaped modern mathematics.

Yay, math! Previously from the Ri Channel: the animated adventure of x-ray crystallography.

Thanks, @cawston and @benjohnbarnes.