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.
TED-Ed
How do wind turbines work? | Rebecca J. Barthelmie and Sara C. Pryor
Every 24 hours, wind generates enough kinetic energy to produce roughly 35 times more electricity than humanity uses each day. And unlike coal or oil, this resource is totally renewed each day. So how can we harness this incredible...
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?
MinutePhysics
Why Are Airplane Engines So Big?
The answer to this question has everything to do with drag & kinetic energy vs momentum change (thrust) ie, a bigger engine fan allows for a larger air mass to be accelerated a smaller amount to give the same thrust as you'd get from a...
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
PBS
The Oh My God Particle
In 1991 a single atomic nucleus slammed into our atmosphere with the intensity of a macroscopic object. It's been named The Oh-My-God particle.
Bozeman Science
Work Energy Principle
In this video Paul Andersen explains how the kinetic energy gained by an object is equivalent to the work done on the object. The force on the object must act parallel or antiparallel to the motion of the object to do work. Several...
SciShow
About That Snap…
Researchers were inspired by a certain purple villain to study the physics of finger snapping, and they found that the mundane hand motion is actually quite an impressive feat.
Bozeman Science
Conservation of Linear Momentum
In this video Paul Andersen explains how linear momentum is conserved in all collisions. In completely elastic collisions the kinetic energy of the objects is also maintained. Several examples and demonstrations are included.
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
Electrochemical Gradient
In this video Paul Andersen explains how the electrochemical gradient is a combination of the chemical and electrical gradient of ions. As ions move across a membrane the potential change creates a hidden force that isn't always apparent.
3Blue1Brown
Visualizing turbulence
A look at what turbulence is (in fluid flow), and a result by Kolmogorov regarding the energy cascade of turbulence.
TED-Ed
TED-Ed: Why does ice float in water? - George Zaidan and Charles Morton
Water is a special substance for several reasons, and you may have noticed an important one right in your cold drink: ice. Solid ice floats in liquid water, which isn't true for most substances. But why? George Zaidan and Charles Morton...
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...
Be Smart
There's No Such Thing As Cold
You've felt cold before. Sometimes it's cold outside. But what if I told you that "cold" isn't real? There's no substance or quantity called "cold" in science. We can't measure the amount of "cold" in something. Instead it's about what's...
Crash Course
Work, Energy, and Power: Crash Course Physics
When you hear the word, "Work," what is the first thing you think of? Maybe sitting at a desk? Maybe plowing a field? Maybe working out? Work is a word that has a little bit of a different meaning in Physics and today, Shini is going to...
SciShow
Absolute Zero: Absolute Awesome
Hank explains absolute zero: -273.15 degrees Celsius - and the coldest place in the known universe may surprise you.
Crash Course
Simple Harmonic Motion: Crash Course Physics
Bridges... bridges, bridges, bridges. We talk a lot about bridges in Physics. Why? Because there is A LOT of practical physics that can be learned from the planning and construction of them. In this episode of Crash Course Physics, Shini...
TED-Ed
TED-Ed: Will there ever be a mile-high skyscraper? - Stefan Al
Would a mile-high skyscraper ever be possible? Explore the physics behind some of the tallest buildings and megastructures in the world. -- In 1956, architect Frank Lloyd Wright proposed a mile-high skyscraper, a building five times as...
SciShow
Why Wouldn’t You Put Your Wind Farm In the Windiest Place?
Wind is an ever increasing source of power worldwide, which means wind farms continue to be constructed. And choosing where to place those farms seems straightforward, but it might not actually be best to place the in the windiest places!
Bozeman Science
Heating
In this video Paul Andersen explains how heating is the transfer of energy (heat) from a warmer object to a cooler object. Heat can be transferred through conduction, convection and radiation. At the microscopic level conduction results...
Crash Course
Collisions: Crash Course Physics
COLLISIONS! A big part of physics is understanding collisions and how they're not all the same. Mass, momentum, and many other things dictate how collisions can be unique. In this episode of Crash Course Physics, Shini sits down to lead...