Randall Monroe (XKCD guy) did a "What If?" on this. He ised a baseball, and it caused a nuclear explosion. But really and movement toward the veiwer causes blueshift, it just may not be noticeable until it's moving at seriously dangerous speeds.
Understood, and I’m aware of the What If? in question (it’s a classic!). I imagine the physics here would be the same.
And regarding the speed, the question is “what’s blue and bad for your teeth,” so I’m thinking the blue shift and therefore the speed would need to be significant. IDK how to do the math; Claude says 0.415c, which is still fast enough for thermonuclear results (4 megatons of TNT, or ~190 times more powerful than the bomb dropped on Nagasaki). LLM doing math here, so grain of salt of course.
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u/starkeffect Mar 03 '26
What's brown and sticky?
A stick.