Eventually, they will reach the equilibrium. Furthermore, heat will not flow between two objects of the same temperature. An interesting fact about our planet is that as heat from Earth is lost to space, it is replaced by heat brought by the sun. The process of heat transfer continues until everything reaches the equilibrium. Did everyone always know what heat was? In fact, they did not always know. People used to think heat was some sort of weightless thing called “caloric”. People thought “caloric” moved from a hot object to a cold object, but that didn’t explain why, for example, two cold things can heat each other up when you rub them together. An extremely valuable piece of information regarding heat is that heat and temperature are NOT the same thing. For example, hot coals are at a very high temperature, but if you touch them very briefly, only a small amount of heat energy is transferred to your feet. An ironic but significant topic to briefly go over is “cold”. Cold is simply the absence of heat. Cold cannot be transferred. People feel cold when they lose more heat energy than we can produce. To stay warm, they must
Eventually, they will reach the equilibrium. Furthermore, heat will not flow between two objects of the same temperature. An interesting fact about our planet is that as heat from Earth is lost to space, it is replaced by heat brought by the sun. The process of heat transfer continues until everything reaches the equilibrium. Did everyone always know what heat was? In fact, they did not always know. People used to think heat was some sort of weightless thing called “caloric”. People thought “caloric” moved from a hot object to a cold object, but that didn’t explain why, for example, two cold things can heat each other up when you rub them together. An extremely valuable piece of information regarding heat is that heat and temperature are NOT the same thing. For example, hot coals are at a very high temperature, but if you touch them very briefly, only a small amount of heat energy is transferred to your feet. An ironic but significant topic to briefly go over is “cold”. Cold is simply the absence of heat. Cold cannot be transferred. People feel cold when they lose more heat energy than we can produce. To stay warm, they must