Ancient Chinese Secret, Huh?

Okay, it’s not Chinese, but it is a collection of old formulas and other interesting things.

A partial listing of the books which can be found on the site.

Tons more on the site.


This is most useful.

Thank you!

There is a book that my local library still has on the shelf in the children’s section called “The Scientific American book of projects for the amateur scientist.” It was published in 1960. It has plans for building “an inexpensive x-ray machine.”

I assume it was a really bad idea even in 1960. But anyway it looks like the necessary parts are long obsolete and not obtainable.

Scans are available on the web. No link out of fear of being banned.