No, if you take a room that's been at 50 degrees and heat "it" to 70 degrees - it all depends what "it" is . The air temp? Object temps, etc. You can take a 40 degree room and heat it up to when the air temp is 70F, and it feels like 70F, yet many objects will not be that warm unless you keep that temp stabil for X amount of time.
Infrared can send heat to an object without wasting a lot of energy heating the air inbetween. So can a forced-air salmander that does it by targetting an object and shooting hot air at it.
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Today's Featured Article - Measuring with Calipers - by Staff. The legs of inside calipers are curved outward at the extremities to facilitate measuring small holes, while outside caliper legs have a large curve inward to increase their capacity for large work. Firm-joint calipers are adjusted approximately by the hands and then set to the feel of the work by tapping them on a metal surface. It is a common practice when opening calipers by this means to tap the top of the joint. It is better, if possible, to tap the inside of the legs, as repeated blo
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