šŸ”¬ Science

The Coldest Moment of the Day

The ground gives off heat all night long. Drag the slider from evening to mid-morning and see where the temperature curve hits bottom. In the middle of the night, or somewhere else entirely?

Heat out of the ground Heat in from the sun 12:00 warmer colder 182100 03060912 sunrise Coldest! Mid-morning. The sun adds more than the ground loses.
EveningMorning

Mid-morning. The sun adds more than the ground loses.

Heat out of the ground
Heat in from the sun
Temperature
The coldest moment
1Evening: the sun sets, the top-up stops
2Night: heat drains away, frost on the seat
3Sunrise: it is still getting colder
4In = out: the coldest moment of the day