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Dont____Panic t1_j2l2s7u wrote

Reply to comment by daveescaped in Does cold temperature make vistas more 'crisp' looking? by colorado_hick

Summer sun also creates convection currents that distort light.

So both dry and cool (which often go together) make clearer views.

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solarish t1_j2lfwao wrote

More specifically, it is the increased variance in refractivity (due to convection) that distorts light.

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