Devon de Numbre

EDC pocket litter: Event Horizon

The J.L. Lawson & Co. Event Horizon Spin Coin (displayed next to the Shire Post Mint Blood Moon Copper Coin) is my latest addition:

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"In astrophysics, an event horizon is a boundary beyond which events cannot affect an observer. Wolfgang Rindler coined the term in the 1950s."Wikipedia

Perfect: an actual black hole that I can carry with me.

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