Should You Wipe Off Your Sweat?

From the creator

Want to donate to the highest-impact charities AND get your donation matched up to $100? Visit https://Givewell.org/MinutePhysics If you’re in scorching heat, or when your body is working hard and you’ve got hot, hot sweat all over, sticky and stifling - does wiping off the sweat help you cool off? Or is it better to leave it on? Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ ********************************** REFERENCES Hyperphysics: http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/sweat.html Engineering Toolbox Mollier Diagram: http://www.engineeringtoolbox.com/psychrometric-chart-mollier-d_27.html Sweat Info http://www.anaesthesiamcq.com/FluidBook/fl3_3.php Other articles: http://www.slate.com/articles/health_and_science/explainer/2012/06/should_you_wipe_away_your_sweat_or_does_that_keep_you_from_cooling_down_.html http://onlinelibrary.wiley.com/doi/10.1111/j.1748-1716.2012.02452.x/abstract http://lifehacker.com/5921036/dont-wipe-your-sweat-off-your-brow-itll-cool-you-down-faster http://www.realclearscience.com/2012/06/28/does_wiping_sweat_prevent_you_from_cooling_off_247729.html ********************************** CALCULATIONS Typical adult human body surface area ~ 1.5-2 m^2 https://en.wikipedia.org/wiki/Body_surface_area Evaporation rate at 25°C and 50% humidity, slight air movement (v~.5m/s) = .35kg/m^2/hr http://www.engineeringtoolbox.com/evaporation-water-surface-d_

Published 2023-12-20 · Watch on YouTube ↗
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