yego.me
💡 Stop wasting time. Read Youtube instead of watch. Download Chrome Extension

Let's think about Lightning - Smarter Every Day 15


2m read
·Nov 3, 2024

[Music] [Rainfall and thunder] Hey, it's me, Destin.

So I'm gonna explain why thunder sounds the way it does. And uh, we're in the middle of a thunderstorm here, obviously, so I'm going to try to make this quick.

So basically, if you're standing on the ground here, and let's say there's lightning that happens way up in the sky, really far away from you. So what happens is, as soon as it breaks the sound barrier, that sound wave starts traveling towards your body. But also, the speed of the electricity of the lightning bolt is a lot faster than sound, so that... Oh wow, that's going to be a big one. At least I could see it.

So also, that lightning bolt... [Thunder] outruns the sound. So the sound is simultaneously initiated from all points along the lightning bolt, at the same time. So what happens is you get some cracks that happen before other cracks and you get this low rumble. So you might get... [Thunder] a really low rumble, like that.

So what happens is, if the lightning bolt is really really really far away from you, then all the sound might make it to you at the same time. But sometimes you get this long drawn out thunder rumble, and that's because the sound is coming to you at different points from along the bolt. It has to do with the distance of the lightning bolt, your position and the sound.

So there you go. I know that's not in-depth at all, but I'm in the middle of a thunderstorm. But I hope you're smarter every day and you at least get to think about it. Have a good one. [Thunder]

[Music] ...Good at this, so... I'll show you.

Watch his head stay totally stationary as I move his body. I can move his body in pretty much any direction. Captioning in different languages welcome. Please contact Destin if you can help.

More Articles

View All
Exclusive: A Conversation with Alex Honnold and Co-Directors of “Free Solo” | National Geographic
I definitely have a fear of death, same as anybody else, and I would very much like to not die while climbing. You know, I was this huge, huge wall. But all it takes is one move that doesn’t feel right for you not to be able to do it. Maybe in 2015, I st…
15 Reasons Why Growing Up Rich is a Liability
If you grew up poor like we did, you certainly experienced firsthand what it’s like to never ask for anything, to be self-sufficient. But every single one of us, deep down, wished our family was rich. But you know how when you were little, you didn’t know…
living alone ☕️ | a productive day in Rome 🇮🇹 exploring the city, eating yummy food 🍝
[Music] Further [Music] Um [Music] Okay, so good morning everyone! Today we’re gonna spend a productive day together because I have a lot of things to do. So, I’m currently living alone in Rome, but my mom is visiting me. I have a video that I need to edi…
Levitating Barbecue! Electromagnetic Induction
Let’s switch it on. Let’s see what it does. Through this coil of thick wire, we’re about to pass a huge alternating electric current. On top is a 1 kg aluminum plate. So we hear that noise. What’s that noise? It’s the vibration of the plate because it’s v…
Example diving a unit fraction by a whole number
So let’s see if we can figure out what one-third divided by five is. And I’ll give you a hint: try to draw out one-third of a whole and then divide it into five equal sections. Pause this video and try to do that. All right, now let’s try to work through…
Scott Cook - Founder and Chairman of the Executive Committee, Intuit | Khan Academy
All right, I think we’re ready to start. Anyone who wants to—anyone else wants to join us for the talk with Scott Cook, founder of Intuit? So I’ll just start. You know, for everyone here at Khan Academy who doesn’t know both Scott and Cigna Cook are, you …