Recently I shined a Petzl LED headlamp set on low light on a spinning fossil egg. I was amazed to discover a strobe pattern on the egg. The fossiliferous limestone is filled with fossilized LIFE. More particularly 30,000,000 year old snails and clams from the ancient Tethys Seabed. It’s cool that when spun and observed under a particular spectrum of light a pattern emerges!! Watch this interesting video, or for an even better time, try it your self!
~eggman