Leonardo designed the first ball bearing for a 15th century revolving stage production in Milan.
This entry was posted on February 2, 2013 by John & Lois. It was filed under Appleton, Da Vinci Exhibit, Houdini Museum .
How interesting….love the repeating shapes and patterns. This in itself is a work of art!
February 2, 2013 at 8:34 am
Are you going to share these with the museum? I bet they’d love to have such great photos of the exhibit once it’s gone.
February 2, 2013 at 10:19 am
I’m learning so much from your visit to the exhibits! This is another thing that I did not know that DaVinci did.
February 2, 2013 at 10:40 am
And what a great way to recycle empty cotton reels!
February 2, 2013 at 5:10 pm
What a brilliant mind! Thank you so much for sharing these gorgeous images. I wish I could visit that exhibit. Fascinating.
February 2, 2013 at 7:00 pm
Something else I never knew. What a genius!
February 3, 2013 at 11:11 am
I’m really enjoying your trip to this museum, learning a lot and your photos are a treat.
February 3, 2013 at 3:43 pm
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