Decades before a scientific consensus emerged that atoms are real, clues to atomic properties began emerging. But how were these properties to be determined when atoms are too tiny to be seen? In this presentation we wander through the history of this amazing globe-spanning scientific quest of the 19th century and first half of the 20th century.

Colston Chandler, an Albuquerque resident for more than 50 years and a UNM professor of physics for 36 of those years, is an outdoor enthusiast who has led many Oasis walks (primarily in the Bosque).