Click to open image viewer. Spinthariscopes by: W. Crookes [.17.1] (right), radioactive source for Crookes [.17.2] (2nd from right), U.S. Radium Corp. [.18 & .19] (2 on left) CC0 Usage Conditions ...

Among the many science toys that have fallen out of fashion since we started getting nervous around things like mercury, chlorinated hydrocarbons, and radiation is the spinthariscope, which let people ...

I HAVE recently been making a series of observations upon retinal excitability, and have used, among other test stimuli, the well known flashing scintillations of a pocket spinthariscope. The special ...

The results are in: This year's top gift for science geeks, decided by a decidedly unscientific survey, is the spinthariscope - one of the few toys out there that's truly nuclear-powered. Subscribe to ...

IT must be well known that the lantern of a firefly, teased by being held with the fingers, emits irregular flashes from minute point-sources in the lantern which follow the normal flash, the light of ...

Among the many science toys that have fallen out of fashion since we started getting nervous around things like mercury, chlorinated hydrocarbons, and radiation is the spinthariscope, which let people ...