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SDQ or SDQ-H Users or Issues

Started Mar 21, 2022 | Discussions thread
xpatUSA
xpatUSA Forum Pro • Posts: 23,016
Re: SDQ or SDQ-H Users or Issues

hikerdoc wrote:

xpatUSA wrote:

dellaaa wrote:

Windchill should apply to any heat producing body, humans and cameras both produce heat.

Not correct. Windchill includes the effect of evaporation from human skin.

Definition of windchill

: a still-air temperature that would have the same cooling effect on exposed human skin as a given combination of temperature and wind speed.

https://www.merriam-webster.com/dictionary/windchill

A camera body will heat up less if the windchill increases at a given ambient temperature.

Sorta - but the claim does not include evaporation, only conduction, and that is not called windchill. In other words, "windchill" does not equal windspeed.

Living here in northern New England where we have been teased with a few days of 50-60F degrees, the last couple days of return to 0-10F (-15C) and 20-40 mph wind were just plain rude and my cameras and my fingers stayed inside where they didn’t need to worry about whether it felt like 0 or -10! 🙂. The relative contributions of conduction, convection, radiation, and evaporation all felt much better in front of the wood stove.

Excellent!

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