Archive for date: September 3, 2004

Scientific American Supplement, May 23, 1891

September 3, 2004 | Gutenberg Gems | By: Mark VandeWettering

Today’s Gutenberg Gem is The Project Gutenberg eBook of Scientific American Supplement, May 23, 1891. It includes some nice illustrations of an unusual equatorial telescope, various dogs, moths, and some mathematical illustrations on the conic sections. I’m always on the lookout for illustrations of telescopes, so I thought it was pretty cool. The telescope was […]

Share Button