(1) Touch Deep Time; (2) Old copperplate engravings catch new light
Maker Faire Bay Area 2023
October 13th-22nd
(1) The layers of the “Geological Column” are pages of Earth’s diary, with the oldest on the bottom, newest on top. I’m collecting the first Geological Column of rocks formed during every epoch in Earth’s history. 41 different strata you can touch, from 3.4 billion years old to contemporary — more than 3 times as many as at Grand Canyon. Backed by a striking striped panel telling ages and what Earth and Life were doing in each epoch. Feel how Earth developed!
(2) When copperplate engravings gave way to lithography in the 1970s, an astronomical magazine set aside its old pictures. I've polished them, and turned them into a mobile to catch new light.
Norman Sperling
Astronomer. Editor, The Journal of Irreproducible Results, the science humor magazine. Many exhibits at Bay Area, Detroit, and East Bay Maker Faires. Long-time university and planetarium lecturer. More at: https://www.everythingintheuniverse.com.
