Is Moonlight Cold? A Backyard Heat-Transfer Experiment @BobtheScienceGuy

Uploaded August 2024 | Updated September 2026, 3 weeks ago

A simple experiment tests the claim that moonlight directly cools objects. A clear pane of glass allows moonlight through while reducing radiative heat loss from the ground below it. Temperature measurements show the covered ground remains warmer, supporting nighttime radiative cooling as the cause of the temperature difference.

Is Moonlight Cold? A Backyard Heat-Transfer Experiment

Why an Aircraft Attitude Indicator Follows Local Level

$Measure Earth Curvature Across a Lake With an Auto Level A surveyor’s auto level establishes a local horizontal across a 2,552-foot lake, while benchmarks tied to the water surface provide equal-height reference points on both shores. The experiment quantifies instrument precision, operator uncertainty and atmospheric refraction, then compares the observed vertical offset with the curvature predicted for Earth.$

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