The Gilbert U-238 Atomic Energy Laboratory, a rare and controversial educational toy from the 1950s, is making headlines as it heads to auction. Created by Alfred Carlton Gilbert, who also developed the iconic Erector Set, the kit was marketed as a way for young enthusiasts to explore atomic science. It includes actual uranium samples—carnotite, autunite, torbernite, and uraninite—and offers tools like a cloud chamber, a spinthariscope, and an electroscope for measuring radiation. Despite its educational value, it was discontinued in 1951 due to “government restrictions” and difficulty obtaining materials, including uranium.
With fewer than 5,000 units produced, it’s a highly sought-after collector’s item, but the inclusion of radioactive materials makes it a highly dangerous piece of history. However, a 2020 analysis indicated that the radiation exposure from the sealed containers is similar to that of UV exposure from the sun, suggesting it may be relatively safe as long as the materials are contained. The auction ends on December 11, just in time for holiday shoppers looking for something truly unique.
Given its dangerous nature, it serves as a reminder of how much our understanding and regulation of radioactive materials has evolved since the 1950s.
