Magnet making Current - Smarter Every Day 16

less than 1m read

·Nov 3, 2024

Hey, it's me, Destin. I'm in Baltimore. [Mascot blows raspberries] [Destin laughs] Thanks. [Music]

So let's say you want to make yourself smarter on electronics, but you're not, uh... You're not really swoofed on that kinda stuff. Oh, looky here, it's the National Electronics Museum. Why don't we go have a look?

John McCarty is here. He's a volunteer at the museum. We have a demonstration for you to show you the relation between current flow and magnetism. So there's a magnet right here, on this side of this tube. We have a coil of wire hooked up to a galvanometer, basically, that's measuring amps. It's set up for DC amps.

So when we twist this, the magnet's gonna fall through the coil and you'll get current flow here. So you can see the current spike. So here's the question: when we turn it the other way, are we going to get positive current or negative current? So that's the question.

So if you think it's gonna be positive - if the needle's gonna go that way, click here. If you think the needle's gonna go that way, click here, and afterwards we'll get Mr. McCarty to explain it, so... Click now. [Music]

Captioning in different languages welcome. Please contact Destin if you can help.

Utility maximization example

How I Made My First Million Dollars Part 1 | Ask Mr. Wonderful Shark Tank's Kevin O'Leary

View All

5 Habits That Made Me $30,000/month By 22

I went from making seven dollars per hour at the restaurant to earning multiple six figures in only two and a half years from the YouTube businesses I’ve built. Growing up, unfortunately, I didn’t receive much financial education, and as everyone knows, s…

Dividing polynomials by x (no remainders) | Algebra 2 | Khan Academy

Let’s say someone walks up to you on the street and they give you this expression: x squared plus 7x plus 10 divided by x plus 2. And they say, “See if you could simplify this thing.” So, pause this video and see if you can do that. One way to think a…

Cellular respiration | Food and energy in organisms | Middle school biology | Khan Academy

So, let’s say I was preparing to go on a long hike. Besides packing water, dressing for the weather, and mapping my route, I’d probably also want to eat a snack before leaving to make sure I have enough energy for the hike. We, as humans, need food to nou…

How to Make it Through Calculus (Neil deGrasse Tyson)

Through it, I have a, I have a— I don’t quite call it elevated to the level of a parable, but it’s a story in my life that I reference all the time. Right now, I share it with you as short. I’m in high school, I’m a junior in high school and I want to ta…

How we use the video wall to sell corporate jets.

This is an Airbus 319 320. So, usually when somebody comes in, I’ll send them in here for a little bit to sort of get the feeling of being in the plane. I’ll say, “How much you want to spend?” So let’s say the guys want to spend 20 million bucks. Out of …

7 Anti-Stoic Habits To Remove From Your Life Now! (A MUST WATCH STOICISM GUIDE)

Marcus Aelius, a famous Stoic philosopher, once said: “The happiness of your life depends upon the quality of your thoughts.” This quote reminds us of how our thoughts affect our reality and our health. Just as the people we hang out with can have a big e…

Magnet making Current - Smarter Every Day 16

More Articles