TED-Ed
TED-Ed: What's hidden among the tallest trees on Earth? - Wendell Oshiro
When Stephen Sillett was a boy, he took to the forests of Pennsylvania with his brother and grandmother. Looking up into the dense branches and leaves, his curiosity was piqued: What was hidden up there? Wendell Oshiro tells the story of...
TED-Ed
TED-Ed: Will future spacecraft fit in our pockets? - Dhonam Pemba
When you picture a rocket, you might imagine a giant ship carrying lots of fuel, people and supplies. But what if the next wave of spacecraft were small enough to fit into our pockets? Dhonam Pemba details the future of microspacecraft,...
TED-Ed
TED-Ed: How to unboil an egg - Eleanor Nelsen
It's so obvious that it's practically proverbial: you can't unboil an egg. But actually, it turns out that you can -- sort of. Eleanor Nelsen explains the process by which mechanical energy can undo what thermal energy has done.
TED-Ed
TED-ED: How to manage your time more effectively (according to machines) - Brian Christian
Human beings and computers alike share the challenge of how to get as much done as possible in a limited time. Over the last fifty or so years, computer scientists have learned a lot of good strategies for managing time effectively - and...
TED-Ed
TED-Ed: Human sperm vs. the sperm whale - Aatish Bhatia
Traveling is extremely arduous for microscopic sperm -- think of a human trying to swim in a pool made ofother humans. We can compare the journey of a sperm to that of a sperm whale by calculating the Reynolds number, a prediction of how...
TED-Ed
TED-ED: The first asteroid ever discovered - Carrie Nugent
Over the course of history, we've discovered hundreds of thousands of asteroids. But how do astronomers discover these bits of rock and metal? How many have they found? And how do they tell asteroids apart? Carrie Nugent shares the story...
TED-Ed
TED-Ed: Under the hood: The chemistry of cars - Cynthia Chubbuck
There are over one billion cars in the world right now, getting people from point A to point B. But cars aren't just a mode of transportation; they also teach an excellent lesson in chemistry. Cynthia Chubbuck navigates the intricate...
TED-Ed
TED-Ed: Football physics: The "impossible" free kick - Erez Garty
In 1997, Brazilian football player Roberto Carlos set up for a 35 meter free kick with no direct line to the goal. Carlos's shot sent the ball flying wide of the players, but just before going out of bounds it hooked to the left and...
TED-Ed
TED-Ed: The chemistry of cookies - Stephanie Warren
You stick cookie dough into an oven, and magically, you get a plate of warm, gooey cookies. Except it's not magic; it's science. Stephanie Warren explains via basic chemistry principles how the dough spreads out, at what temperature we...
TED-Ed
TED-Ed: At what moment are you dead? - Randall Hayes
For as far back as we can trace our existence, humans have been fascinated with death and resurrection. But is resurrection really possible? And what is the actual difference between a living creature and a dead body anyway? Randall...
TED-Ed
TED-Ed: What is HPV and how can you protect yourself from it? - Emma Bryce
Get informed on the causes and risks of human papillomavirus, HPV, and how to protect yourself from the infection. -- At some point, most sexually active people will be infected with human papillomavirus, or HPV. There are over 100 types...
TED-Ed
TED-ED: The deadly irony of gunpowder - Eric Rosado
In the mid-ninth century, Chinese chemists, hard at work on an immortality potion, instead invented gunpowder. They soon found that this highly inflammable powder was far from an elixir of life -- they put it to use in bombs against...
TED-Ed
TED-ED: Is there a reproducibility crisis in science? - Matt Anticole
Published scientific studies can motivate research, inspire products, and inform policy. However, recent studies that examined dozens of published pharmaceutical papers managed to replicate the results of less than 25% of them - and...
TED-Ed
TED-Ed: If superpowers were real: Super speed - Joy Lin
What if super speed wasn't just the stuff of epic comic book stories? Is it scientifically possible to be super speedy? In this series, Joy Lin tackles six superpowers and reveals just how scientifically realistic they can be to us mere...
TED-Ed
TED-ED: Sunlight is way older than you think - Sten Odenwald
It takes light a zippy 8 minutes to reach Earth from the surface of the Sun. But how long does it take that same light to travel from the Sun's core to its surface? Oddly enough, the answer is many thousands of years. Sten Odenwald...
TED-Ed
TED-ED: Why is ketchup so hard to pour? - George Zaidan
Ever go to pour ketchup on your fries-and nothing comes out? Or the opposite happens, and your plate is suddenly swimming in a sea of red? George Zaidan describes the physics behind this frustrating phenomenon, explaining how ketchup and...
TED-Ed
TED-Ed: How rollercoasters affect your body - Brian D. Avery
In 1895, crowds flooded Coney Island to see America's first-ever looping coaster: the Flip Flap Railway. But its thrilling flip caused cases of severe whiplash, neck injury and even ejections. Today, coasters can pull off far more...
TED-Ed
TED-ED: Particles and waves: The central mystery of quantum mechanics - Chad Orzel
One of the most amazing facts in physics is that everything in the universe, from light to electrons to atoms, behaves like both a particle and a wave at the same time. But how did physicists arrive at this mind-boggling conclusion? Chad...
TED-Ed
TED-ED: If matter falls down, does antimatter fall up? - Chlo_ Malbrunot
Like positive and negative, or debit and credit, matter and antimatter are equal and opposite. So if matter falls down, does antimatter fall up? Chloe Malbrunot investigates that question by placing two atoms - one made of matter, and...
TED-Ed
TED-Ed: Why do your knuckles pop? - Eleanor Nelsen
Some people love the feeling of cracking their knuckles, while others cringe at the sound. But what causes that trademark pop? And is it dangerous? Eleanor Nelsen gives the facts behind joint popping.
TED-Ed
TED-ED: Why the Arctic is climate change's canary in the coal mine - William Chapman
The Arctic may seem like a frozen and desolate environment where nothing ever changes. But the climate of this unique and remote region can be both an early indicator of the climate of the rest of the Earth and a driver for weather...
Bozeman Science
Free Body Diagrams
Mr. Andersen shows you how to draw free body diagrams of various objects. The major forces (like gravity, normal, tension, friction, air resistance, etc.) are discussed and then applied to various problems.
TED-Ed
TED-Ed: Pizza physics (New York-style) - Colm Kelleher
People love eating pizza, but every style of pie has a different consistency. If "New York-style"--thin, flat, and large--is your texture of choice, then you've probably eaten a slice that was as messy as it was delicious. Colm Kelleher...
TED-Ed
TED-ED: How small are we in the scale of the universe? - Alex Hofeldt
In 1995, scientists pointed the Hubble Telescope at an area of the sky near the Big Dipper. The location was apparently empty, and the whole endeavor was risky _ what, if anything, was going to show up? But what came back was nothing...