The Magnet - Petrus Peregrinus 1269ad

dante

Interesting short book/letter

https://archive.org/details/letterofpetrusp00pieriala

Perpetual Motion Wheel

Gardener

dante said:

Interesting short book/letter
https://archive.org/details/letterofpetrusp00pieriala

Perpetual Motion Wheel

Somehow i'm unable to open that link. Is it correct?
Thanxs

Gardener

@dante Ah.. Never mind.. now it opened finally...