Articles, Blog

Why graphene hasn’t taken over the world…yet

Why graphene hasn’t taken over the world…yet

– [Cory] It may not look like it, but I’m creating one of the strongest and most versatile materials on Earth, graphene. You’ve probably heard buzz about it. Graphene made big waves back in 2004, and it’s knocked around science news ever since. – A global race for graphene. – You know, it’s not just limited to one little thing.…

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The Physics of Car Crashes

The Physics of Car Crashes

Gasoline has approximately 56 Megajoules of chemical energy per liter , which is more energy than you get from exploding the same of amount of TNT, and is enough to power a toaster for a full day. Cars work by burning gasoline to convert that chemical energy into the kinetic energy of motion of the car, though almost 80% of…

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Sports Car Aerodynamics: Spoiler Alert!

Sports Car Aerodynamics: Spoiler Alert!

[MUSIC PLAYING] Say you like to draw. Specifically, say you like to draw sports cars. What about the spoilers in the back? Do they impact the car’s performance? Or are they there just for show? OK, say we have two cars now. One has a spoiler, and one does not. If they were racing under the same conditions, same engines,…

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The Most Radioactive Places on Earth

The Most Radioactive Places on Earth

Radiation is frightening. At least, certain types of it are. I mean my Geiger counter doesn’t go off near my mobile phone, or the Wi-Fi router or my microwave. That’s because a Geiger counter only measures ionizing radiation — that is, radiation with enough energy to rip electrons off atoms. And it’s measured in units called sieverts. If you’re exposed…

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Why Use AC Instead of DC at Home??

Why Use AC Instead of DC at Home??

Hi. Why do we ever use AC to power homes instead of DC? Haven’t I showed you that AC is typically more dangerous than DC? [Painful Gurgle] Can we run everything on DC? Yes! In fact pretty much every device at home has to rectify AC into DC first before it can use it so why? Why am I angry?…

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Avoid electric shock getting out of a car!

Avoid electric shock getting out of a car!

[MUSIC PLAYING] [MUSIC PLAYING] [ZAP] I hate that! Why do you get shocked sometimes when you get out of your car? Or when you touch a doorknob? Or when you take off a sweater and hug someone? And is there a way to not get shocked? To prevent this from happening, you have to figure out what’s happening. So this…

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FLYING PHONE SCAM EXPOSED (so I built a REAL one)

FLYING PHONE SCAM EXPOSED (so I built a REAL one)

I saw this video on Twitter with over five million views and then again on YouTube with nearly 1 million views Basically, this guy modified his cellphone case with propellers to take selfies Which is awesome my only issue with it is that it’s not only fake, but it’s a scam which I’ll explain in a minute but as for…

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Fastest Car vs. Fastest Helicopter – Which is Faster?

Fastest Car vs. Fastest Helicopter – Which is Faster?

If you asked most of your friends which was faster. The fastest production car in the world or the fastest helicopter, I think most of them would guess the helicopter. Intuitively we expect anything flying in the air to have a higher top speed than anything on the ground could achieve, but physics is a cruel mistress and conventional helicopters…

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