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A rotating circle that draws a perfectly straight line
17,675 views • 3 days ago •via X (Twitter)
7 Comments

Drew the lesser3 days ago
And this my friends is the beauty of a Spirograph!!!

Math Files3 days ago
Love it

Shii’s Hidden Study3 days ago
ギヤホーニング加工の砥石が必要だね

Math Files3 days ago
Haha, looks like we do!

Daniel Frohlich3 days ago
Beautiful

Mark Hayes3 days ago
The basis of Matthew Murray's hypocycloidal steam engine of 1802. This is a modern model: Take a look at this video, 'hypocycloidal steam engine'

🇨🇦The Old Canada 🇷🇺 🎒3 days ago
Clock makers studied this.
