My SO said the above statement and gave me an explanation “Cold is the absence of heat or energy”, it does make sense however in my head it is like saying (in very simplistic terms) “the countryside is the absence of a city” and that is just a ridiculous statement.
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And the more you think about it the worse it’s probably going to get. Tomatoes are berries, strawberries are fruit. What that means is that tomatoes genetically and characteristically are most similar to raspberries than they are to celery whereas strawberries are more like apples than they are like raspberries.
When your physics teacher tells you there’s no such thing as cold, he’s being a bit pedantic… of course there’s such a thing as cold. But he’s trying to liberate your mind from how we currently perceive hot and cold and introduce you to the guiding mechanism for how hot and cold works. Because really when you think about the physics, there really isn’t hot either. There’s just heat. And heat is energy and the first law of thermodynamics says that no energy is created nor destroyed it merely changes form.
So now you need to wrap your mind around, if heat isn’t created or destroyed… how do things get hot and cold? Well, a place that feels colder has less heat than a place that feels hot.
But if no energy can be created nor destroyed…. how do some places get hotter? Well, thermal energy (heat) can move. And as a principal heat moves kinda like water… a path of least resistance to the areas that have the least of it. To picture it if you have an area without water and an area with an abundance of it, the water will flatten out until the whole area has some water.
Heat does basically the same thing.
Now what’s really going to blow your mind is how a furnace, heat pump, and air conditioning work when heat can’t be created nor destroyed.
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