PBS
What Does An Electron Actually Look Like?
New ReviewWhat does an electron really look like? I mean, if we zoom in all the way. Is it a sizeless speck of charge? Is it a multidimensional vortex of quantum strangeness? Is it the boundary of a tiny universe with universe-electrons of its...
PBS
Will The Big Bang Happen Again (and Again)?
New ReviewHow did the universe begin? How can something come from nothing? One way to “solve” this most difficult of philosophical conundrums is to avoid it altogether. Maybe the universe didn’t begin. Maybe the Big Bang was just one in an endless...
SciShow
How To Make Buildings Into Batteries
New ReviewIt's no secret that we need green energy solutions. But one often-overlooked part of that future is the need to store our green energy longer-term, so finding novel ways to store that energy is key. Enter: gravity batteries. Hosted by:...
Crash Course
Chemical Reactions in Biology: Crash Course Biology #26
New ReviewCells need energy to power the chemical reactions that keep their microscopic cities running, and most of that energy comes from a chemical called ATP. In this episode of Crash Course Biology, we’ll learn how our cells use energy, what...
PBS
How the Higgs Mechanism Give Things Mass
Fermilab physicists really care about the mass of the W boson. They spent nearly a decade recording collisions in the Tevatron collider and another decade analysing the data. This culminated in the April 7 announcement that this obscure...
PBS
Is ACTION The Most Fundamental Property in Physics?
It’s about time we discussed an obscure concept in physics that may be more fundamental than energy and entropy and perhaps time itself. That’s right - the time has come for Action.
PBS
The Trebuchet Challenge | Space Time
Kinetic and potential energy are defined as combinations of more basic quantities: position, velocity and mass. These combinations are chosen so that their sum is conserved. It’s actually remarkable that there’s any such combination of...
PBS
Will the Universe Expand Forever?
Throughout history, there has been much speculation about what the fate of the universe would be. Many theorized that the universe would eventually succumb to the pull of gravity, and reverse its expansion in what was being called ‘The...
Bozeman Science
PS3A - Definitions of Energy
In this video Paul Andersen attempts to explain the age old questions - What is Energy? Even though it comes in many forms one of the defining characteristics of energy is that it is conserved over time. He then explains that all energy...
SciShow
How We Make the Coldest Things in the Universe
If you want to make atoms THIS cold, you can’t just stick them in the freezer…you’ll need to take advantage of quantum mechanics!
PBS
What is Energy?
Energy is the most powerful and useful concept in all of physics, but what exactly is it?
SciShow
5 Ways to Use Your Body as a Charger
Devices that collect data about our bodies need power, but they also might need to be very small or even ingestible. To avoid including batteries in these cases, researchers are looking for ways to harvest energy from the body itself.
Bozeman Science
Water Potential
Paul Andersen explains how populations experience exponential. He begins by address the major players; N (population size) and r (growth rate). He models population growth in rabbits through four generations. He then shows you how to use...
3Blue1Brown
Snell's law proof using springs: Brachistochrone - Part 2 of 2
A clever mechanical proof of Snell's law.
Bozeman Science
Internal Energy
In this video Paul Andersen explains how the internal energy of a system can change as the internal structure of the system changes. An object model will not be able to account for the restoring forces and so a system model must be used....
PBS
The Real Meaning of E=mc Squared
You've probably known OF E=mc_ since you were born, and were also probably told that it meant that it proved Mass equaled Energy, or something along those lines. BUT WAIT. Was E=mc_ explained to you properly? Mass equalling energy is...
TED-Ed
TED-ED: All of the energy in the universe is... - George Zaidan and Charles Morton
The energy in the universe never increases or decreases -- but it does move around a lot. Energy can be potential (like a stretched-out rubber band waiting to snap) or kinetic (like the molecules that vibrate within any substance). And...
PBS
Scientists Have Detected the First Stars
What do the first stars in the universe, dark matter, and superior siege engines have in common?
Crash Course
Energy & Chemistry: Crash Course Chemistry
Grumpy Professor Hank admits to being wrong about how everything is chemicals. But he now wants you to listen as he blows your mind with a new sweeping statement: everything (yes, really everything this time) is energy. What?! This week,...
SciShow
Food Compilation - Happy Thanksgiving!
It's Thanksgiving here in the United States and we at SciShow are thankful for many things, but one of the big ones is the fun and curious questions we get from you!
TED Talks
TED: My seven species of robot -- and how we created them | Dennis Hong
Meet seven all-terrain robots -- like the humanoid, soccer-playing DARwIn and the cliff-gripping CLIMBeR -- built by Dennis Hong's robotics team at RoMeLa, based at Virginia Tech. Watch to the end for the five creative secrets to his...
SciShow
Fun With Potatoes & Physics! A SciShow Experiment
Hank uses a favorite subject of the YouTube community - the potato gun - to teach us about the principles of pneumatics, which use the potential energy of compressed gas to do work in lots of useful machines every day.
Bozeman Science
Kinetic Energy
In this video Paul Andersen explains how the kinetic energy of an object if due to the motion of an object. Objects can have kinetic energy but they cannot have potential energy unless they are part of a system. He then explains how to...
Bozeman Science
Total Energy
In this video Paul Andersen explains how the total energy of a system is the combination of kinetic, potential and internal energy of the objects. He then shows you how to calculate the kinetic energy, gravitational potential energy, and...