July 29, , Images above courtesy of Wikipedia.
Heat index chart, with air temperature on the left and dew point temperature on top. The different colors correspond to the caution level one should take. Courtesy of the Oklahoma Climatological Survey.
It’s Hot: Humid vs. Dry Heat
Friday Dec 7, by jsullivan. A Rainy and Snowy November This is because the body can efficiently cool itself with sweat, which evaporates quickly off the skin into the air. Check out this forum , in which runners argue whether dry or humid heat has a greater dehydration effect, illustrating the deceptive effects of dry mouth.
Common to much of the Eastern half of the U. When the air is nearly saturated with moisture, sweat does not evaporate as quickly.
Humid Heat:
This chart from Weather Works is a perfect example of how humidity can significantly increase perceived temperature. Note that while D.
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You can actually calculate the heat index for fun: In order to maximize efficiency of adaptation, the body selectively increases sweating in areas that previously had poor sweat rates. In either case, overheating is a real and dangerous possibility.
Dry heat sterilization
Endurance athletes face a very fine line between pushing through the heat to improve fitness and pushing too hard. This line can be blurred further when articles like this one detail how much pain professional athletes endure in hot races. There is a definite need to dig deep in races, but realize these athletes were under excellent supervision. Medical professionals are always at hot races, both at the finish line and throughout the course to make sure no one gets dangerously close to overheating. Just ask the Chicago Marathon race organizers.
In , more than people were picked up by ambulances along the course due to heat exhaustion. A second technology, dry heat , has the advantage of producing completely dry instruments, with a correspondingly lower impact on sharpness. A cleaner doctor's kit: The oven heat-up and cool down cycles require only 15 minutes, compared to 45 minutes to two hours for conventional dry heat sterilizers.
Is Dry Heat a Myth? | WeatherWorks
High-powered fans are used to circulate dry heat rapidly over the sausage to maintain an even colour. Dry heat figure 6 is aggressive on the FKM, although the rapid decay is not predictable from the excellent compression set resistance reported by FKM suppliers. Fluoroelastomers and modern engine fluids. Kaz heats up its pad line.