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Re: [Phys-l] Bad physics in National park



Grand Canyon National Park rangers are concerned about heat exhaustion:
At the bottom of the Grand Canyon, near Phantom Ranch, there is (was?) a
thermometer on a post with a sign that warns that the temperature is
whatever is indicated, but "yet higher in the sun". It seems that the
rangers are not aware that the temperature is a measurement of the
surrounding air. That air might or might not be in the sun, depending on
time of day and cloud cover. Maybe that's nitpicking, but National Parks
claim to educate the public on science, ecology, history etc...