1 Thermography Is A Technique For Measuring Radiant Heat And Detecting Variations In Surface Temperatures That May Be M 1 (105.77 KiB) Viewed 16 times
1. Thermography is a technique for measuring radiant heat and detecting variations in surface temperatures that may be medically, environmentally, or militarily meaningful. (a) What is the percent increase in the rate of heat transfer by radiation from a given area at a temperature of 34.2 deg C compared with that at 32.5 deg C, such as on a person's skin? % Increase = v % (b) What is the percent increase in the rate of heat transfer by radiation from a given area at a temperature of 33.7 deg C compared with that at 20 deg C, such as for warm and cool automobile hoods? % Increase = v %
1. The ratio of the heat radiated by a body at the temperature T1 20°C compared to when the body is at the temperature T2 = 40°C is A. 0.0625 B. 0.25 C. 0.77 D. 1.29
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