sun-maximum

Updated: August 2, 2026

Sometimes it was bitterly cold in the mornings, insufferably hot at noon, and again bitterly cold toward night. It was a pity we had no black-bulb, sun-maximum thermometer amongst our instruments, for one is sure its readings would have been of great interest.

Hudson Stuck - The Ascent of Denali (Mount McKinley): A Narrative of the First Complete Ascent of the Highest: Peak in North America