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ahecht t1_j1vfwkt wrote

To see any of the Pru (excluding the antenna) from 51 miles, ignoring refractory stuff, you'd need to be 200ft up. That said, refraction can do some pretty weird things, Famously, when you get the temperature inversions just right, you can see Toronto from NY State.

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b1ack1323 t1_j1vgwme wrote

Does changing tides have any effect on that?

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ahecht t1_j1vhlme wrote

If you're on a boat, at low tide you'd be able to see 10 more feet of a building in Boston than you can at high tide. If you're on the shore it might be more like 20 feet. In any case, it's a pretty insignificant effect.

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