Tag: Dot Physics

Calculating the Power Usage of LED vs. Incandescent Christmas Lights

Calculating the Power Usage of LED vs. Incandescent Christmas Lights

I remember the Christmas tree when I was younger. It had these large colored bulbs—they were pretty, but you couldn’t touch them. Yes, these were the old style incandescent lights, and they could get wicked hot. They were essentially smaller versions for the bulbs you […]

Build a Thermoelectric Generator, Like the Ones That Power Deep Space Missions

Build a Thermoelectric Generator, Like the Ones That Power Deep Space Missions

The phrase “heat engine” might trigger some bad memories from your introductory thermodynamics course. But don’t worry, I am going to show you the coolest heat engine you could possibly image—the thermoelectric generator (TEG). The basic idea behind a heat engine is to draw some […]

The Physics of Projectile Motion With a Clicky Pen

The Physics of Projectile Motion With a Clicky Pen

Sometimes, when I’m proctoring an exam, I end up with a little too much time on my hands. So I play with stuff—whatever I’ve got on hand. In this case, it was one of those clicky pens. It had stopped writing, so I assumed it […]

The Physics of the Invisible Box Challenge

The Physics of the Invisible Box Challenge

Humans dance. It’s what they do. Everyone always wants to get some cool new dance move. First there was the electric slide. Yeah, that was cool—but then there was the moonwalk. That was really cool. And now we have the invisible box. OK, maybe it’s […]

The Science of Sensory Deprivation Tanks in *Stranger Things*

The Science of Sensory Deprivation Tanks in *Stranger Things*

Maybe you have watched Stranger Things but maybe you haven’t. I’ve seen it, and I thought it was great—and not just because there’s lots of science in it. Don’t worry, I’m not going to talk about multiple universes or quantum tunneling. Instead I am going […]

Eagles vs. Seahawks: Why Russell Wilson’s Forward Pass Looks Backward

Eagles vs. Seahawks: Why Russell Wilson’s Forward Pass Looks Backward

During Sunday’s NFL game between the Seattle Seahawks and the Philadelphia Eagles, Seahawks quarterback Russell Wilson makes a pretty nice move. After taking the ball and running with it, he makes a quick pitch off to the side while faking out the defender. Looks pretty […]

The Physics Behind the Strange Interstellar Asteroid ‘Oumuamua

The Physics Behind the Strange Interstellar Asteroid ‘Oumuamua

For the first time, humans have detected an interstellar asteroid—a space rock they’re calling ‘Oumuamua, which is a Hawaiian word meaning “scout.” It’s the only object we’ve ever seen that entered the solar system from beyond our little collection of planets. That’s a pretty big […]

Want a Perfect Turkey? Calculate Its Specific Heat Capacity

Want a Perfect Turkey? Calculate Its Specific Heat Capacity

As I understand it, the whole point of cooking a turkey is to take it at some temperature and then increase it to a higher temperature. Sure, maybe there’s something about family togetherness in there, but really, Thanksgiving is all about thermal transfer. The USDA […]

Could Tesla Power Its Electric Truck With Solar Panels?

Could Tesla Power Its Electric Truck With Solar Panels?

Tesla just keeps making cool things. On the top of the list is its newest addition to the lineup, an all-electric semitruck. Oh, that might sound like a dumb idea—but I don’t think so. Just consider how much stuff is shipped back and forth across […]

How to Hoist Yourself Out of a Hole With Physics

How to Hoist Yourself Out of a Hole With Physics

No one can deny that there are some great physics videos out there in the wild internet. Today, I found this one Phillipsea/Imgur floating around—featuring what appears to be a worker that needs to get out of a cone-shaped hole. Oh sure, he could possibly […]