Physics

### The Physics Philes, lesson 121: Mountains Out of Mole Hills

Is it hot in here? Yes! Because we’re continuing our discussion of heat! Last week we learned about specific heat. We generally measure specific heat as a mass per change in temperature. However, sometimes we might want to use the number of moles of a substance, rather than the substance’s …

### The Physics Philes, lesson 103: Of Nodes and Anitnodes

Last week we looked at what happens when a wave pulse is reflected off a barrier. But what happens when a sinusoidal wave on a string is reflected? That’s our topic today as we discuss standing waves on a string. In order to do this, we need to use a …

### The Physics Philes, lesson 48: Physicists Make Weird Things for Science

In which I draw a weird thing, do math, and make promises I intend to keep. OK nerds! Class is over, which means it’s time to get down and dirty with some physics. Last time this post had something substantive in it, I discussed the kinetic energy of a rigid …

### The Physics Philes, lesson 12: ‘Round and ‘Round It Goes

In which cars are driven, friction is revisited, and sleds slide. Last week I tried to explain circular motion. I spent this week trying to understand how the circular motion equations are applied. Success in this regard has been…um…nonuniform. But I think I have a pretty good grasp of the …

### The Physics Philes, lesson 8: The Electric Slide

In which books are moved, boxes are not moved, and math is avoided. I’ve spent the last few weeks trying my best to explain Newton’s three laws of motion. It’s been a pretty wild ride, but now it’s time to move on. This week we’ll look at some forces that …

Science

### The Physics Philes, lesson 6: Nothin’ But Net Force

In which the net force is measured, a crappy drawing is produced, and a question is asked. The bell has rung (ringed?) girls and boys. Time to settle down and let Mindy teach you a little physics. Also, you need to listen so you can tell me everything I get …

Physics

### The Physics Philes, lesson 5: May the Forces be with You

In which equilibrium is reached, forces are explained, and natural laws are introduced. Hello! I had a great time at SkepchickCON last week, but I’m very sorry it kept me from writing another Physics Philes. This week I’ll start on Newton’s Laws of Motion. Specifically, I’ll be discussing Newton’s First …

Science

### The Physics Philes, lesson 4: Free Falling

In which more math is done, coins are dropped, and a vacation is taken. Has it really been four weeks since I started this foolhardy journey into physics-land? My goodness, how time flies! I think I might be getting the hang of it. You’ll let me know if I’m messing …