Lodestone Websites:
etesseract.com
TESSERACT -- Antique Scientific Instruments -- Homepage
This site offers for sale all manner of rare, early antique scientific and medical instruments. Everything is illustrated, well-researched and described, and priced. TESSERACT...
whatisamagnet.com
What Is A Magnet
A magnet is an object that carries a static magnetic field around it. It attracts bits and particles...