MinutePhysics
Relativistic Addition of Velocity | Special Relativity Ch. 6
This video is chapter 6 in my series on special relativity, and it covers the topic of relativistic addition of velocity: aka, how things that are moving relative to one inertial reference frame, which is moving relative to another...
SciShow
Relative Humidity Isn't What You Think It Is
Have you ever wondered why 75% humidity in the summer feels sticky, but 75% humidity in the winter feels super dry? Turns out, the common definition of humidity is inconvenient and confusing. But there is a better way!
SciShow
Mercury Shouldn't Be Liquid. But It Is.
Mercury, a.k.a. quicksilver, is famous for being a liquid at room temperature...and also below room temperature. But you can't use a high school chem class to explain why. Instead, we need a little help from Einstein.
PBS
What If Physics IS NOT Describing Reality?
Neils Bohr said, “It is wrong to think that the task of physics is to find out how Nature is. Physics concerns what we can say about Nature.” Well it turns out that if we pay attention to this subtle difference, some of the most...
MinutePhysics
The Rocket & String Paradox
This video is about Bell's Spaceship Paradox of Special Relativity, wherein a pair of rockets (or spacecraft) connected by a weak thread accelerate with uniform acceleration, maintaining the same separation, and the question is: does the...
SciShow
Relative Humidity Isn't What You Think It Is
Have you ever wondered why 75% humidity in the summer feels sticky, but 75% humidity in the winter feels super dry? Turns out, the common definition of humidity is inconvenient and confusing. But there is a better way!
SciShow
4 Ways to Date an Archaeological Site
From wasps nests to nuclear reactors. Here are just a few clever ways archeologists figure out how old something is.
TED-Ed
TED-ED: Why do people fear the wrong things? - Gerd Gigerenzer
A new drug reduces the risk of heart attacks by 40%. Shark attacks are up by a factor of two. Drinking a liter of soda per day doubles your chance of developing cancer. These are all examples of a common way risk is presented in news...
PBS
Arrow's Impossibility Theorem
The bizarre Arrow's Impossibility Theorem, or Arrow's Paradox, shows a counterintuitive relationship between fair voting procedures and dictatorships.
MinutePhysics
The Portal Paradox
This video is about the Portal Paradox - a paradox in the video game Portal (and Portal 2) regarding whether or not a companion cube passing through a moving portal plops out of the other end with no speed (velocity, momentum), or shoots...
SciShow Kids
What Is Squid Ink?
Our friend the Giant Squid inspired a SciShow Kids viewer to write us and ask, 'What is squid ink, and can you write with it?' Jessi has the answers!
Be Smart
Is Space A Thing?
Since the days of Ancient Greece, philosophers and scientists have been wondering: What is space? Is the absence of things.... a thing? These questions continued to fascinate physicists in the modern era, leading Isaac Newton, Ernst...
MinutePhysics
Einstein's Proof of E=mc2
Ever wonder how Einstein proved E=mc2? This is how. Pi day (3.14) is Albert Einstein's Birthday! To celebrate, we'll explain 4 of his most groundbreaking papers from 1905, when he was just 26 years old
SciShow
Does the Sun Have Long-Lost Siblings?
The sun may have thousands of stellar siblings, many of them probably just like it, elsewhere in the galaxy. Find out how astronomers are looking for them, and learn about a match that could be our star's long-lost sibling!
MinutePhysics
How Long Is A Day On The Sun?
This video is about the definition of a day, and how it applies (or not) on the sun. Solar day, sidereal day, universal coordinated time (UTC) day, etc. Length of a day.
SciShow Kids
5 Giant Ice Age Animals Natural History for Kids
12,000 years ago, the earth was very different, and so were some of the animals living on it! Here are 5 giants creatures you might have seen back then.
SciShow
Why This Galaxy Gets TWO Black Holes
There’s a massive black hole next door that appears far too big for its host galaxy! And in another galaxy, TWO supermassive black holes formed, giving us a glimpse at a true rarity in astronomy!
TED-Ed
TED-ED: How statistics can be misleading - Mark Liddell
Statistics are persuasive. So much so that people, organizations, and whole countries base some of their most important decisions on organized data. But any set of statistics might have something lurking inside it that can turn the...
SciShow
How to Make A Humanzee
We all know about inter species animal hybrids - Napoleon Dynamite's favorite animal, the liger, is a typical example. But could a human and our closest primate relative the chimpanzee also breed a living hybrid? Hank explores this ......
MinutePhysics
The Twins Paradox Primer (Rotating TIME!)
This video is about the famous 'Twin paradox' of special relativity, and how time can appear to be faster for two different observers at the same time.
TED-Ed
TED-Ed: Einstein's twin paradox explained | Amber Stuver
On their 20th birthday, identical twin astronauts volunteer for an experiment. Terra will remain on Earth, while Stella will board a spaceship. Stella's ship will travel to visit a star that is 10 light-years away, then return to Earth....
TED-Ed
The surprising secrets of hummingbird flight | Kristiina J. Hurme and Alejandro Rico-Guevara
In just a matter of seconds, hummingbirds can perform astonishing aerial acrobatics, eat lunch in midair, pollinate a flower, even escape threats while upside-down. And they can do this all while achieving sustained hovering flight— an...