Physics

The Physics Philes, lesson 131: Popcorn Physics

After what seems like a million year hiatus, I’m back with another edition of The Physics Philes! Time for your physics fix. If I remember correctly, we have finished our discussion of the thermal properties of matter. Now we’re going to take that knowledge – everything we’ve learned about temperature, …

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Physics

The Physics Philes, lesson 130: It’s Just a Phase

We’re at the end our our discussion of the thermal properties of matter. So far we’ve been talking about the simplest molecular viewpoint, ideal gases. In analyzing ideal gases, we can ignore the interactions between molecules. That certainly makes things simpler, but it’s these interactions that cause gases to condense …

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Physics

The Physics Philes, lesson 129: Return of Heat Capacities!

For the past few episodes of The Physics Philes, we’ve been trying to understand the kinetic-molecular model of idea gases. Now we need to rewind a little big and go back thinking about heat capacities. Remember way back in the day we talked about molar heat capacities, or a quantity …

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Physics

The Physics Philes, lesson 123: Conduction, Convection, Radiation, Oh My!

You know, we’ve been talking a lot lately about energy transfer, aka heat. But we haven’t talked much about how that happens. Let’s fix that now. There are three ways heat can move from one place to another: conduction, convection, and radiation. First, let’s start with conduction. Say you heat …

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Physics

The Physics Philes, lesson 120: Very Specific Heat

Brrrr…it’s cold outside. Frigid, even. There’s a dusting of snow outside my window as I type. One might be forgiven for thinking that there isn’t as much heat outside as there is in the summer. But that’s not quite right, as least in the wonderful world of physics. Temperature and …

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Physics

The Physics Philes, lesson 118: Heat, Temperature, and the Zeroth Law of Thermodynamics

Most of us have spent our entire lives learning about heat and temperature. We know we have to cook some food to make it safe, or store food in an icebox or refrigerator. We know it hurts to touch things that are too hot or two cold. But these measurements …

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