Crash Course
Doing Solids: Crash Course Chemistry
In which Hank blows our minds with the different kinds of Solids out there and talks about why they're all different and have different properties. Today, you'll learn about amorphous and crystalline solids, types of crystalline solids,...
Crash Course
Silicon, Semiconductors, & Solar Cells: Crash Course Engineering #22
Today we’re looking at silicon, and how introducing small amounts of other elements allow silicon layers to conduct currents, turning them into semiconductors. We’ll explore how putting two different types – N and P semiconductors –...
TED-Ed
TED-Ed: The simple story of photosynthesis and food - Amanda Ooten
Photosynthesis is an essential part of the exchange between humans and plants. Amanda Ooten walks us through the process of photosynthesis, also discussing the relationship between photosynthesis and carbohydrates, starch, and fiber --...
TED-Ed
TED-ED: How transistors work - Gokul J. Krishnan
Modern computers are revolutionizing our lives, performing tasks unimaginable only decades ago. This was made possible by a long series of innovations, but there's one foundational invention that almost everything else relies upon: the...
Amoeba Sisters
Fermentation
What happens when you can't do aerobic cellular respiration because oxygen isn't available? Explore fermentation with The Amoeba Sisters! This video focuses on alcoholic fermentation and lactic acid fermentation, and it also mentions how...
SciShow
How Radio Waves Could Help Clear the Way to Space
There is an invisible shell of radiation surrounding our planet that can wipe out satellites and could endanger future explorers. One possible solution to this problem? Good, old-fashioned radio waves.
Crash Course
ATP & Respiration: Crash Course Biology
In which Hank does some push ups for science and describes the "economy" of cellular respiration and the various processes whereby our bodies create energy in the form of ATP.
SciShow
Will the Periodic Table Ever Be Complete?
Recently, humanity filled the periodic table up to atomic number 118, which nicely rounds out that row. But are we done yet? Have we discovered all of the different elements? And what is an "island of stability?"
Bozeman Science
Thermal Conductivity
In this video Paul Andersen explains how thermal conductivity measures the ability of material to transfer heat from a hot to a cold object. The thermal conductivity of conductors is high because the heat travels through the delocalized...
SciShow
Why does ice float?
Why does ice float? You might not think about it, but this special property of frozen water is what makes your iced tea tinkle and makes a lot of aquatic life possible. Hank gets in touch with his inner Olaf to explain the wonder that is...
SciShow
How Quarks Fixed the Mess That Was Particle Physics
Particle physics isn't simple, but it was much more confusing before physicists knew about quarks.
SciShow
What’s a Particle Accelerator Doing in a Hospital?
Hospitals have all sorts of amazing tools, and some might even have a particle accelerator hiding somewhere in the basement.
SciShow
There's a Big Problem With Silicon. What's Next?
Silicon transistors allowed computers to shrink from the size of houses to watches in a short time, but engineers are facing a problem: we've almost hit the limit on how small silicon transistors can get.
SciShow
How to Make a Lemon Battery
Hank shows us another SciShow: Experiment! This time he's tackling what may be the most cliche, well-known and misunderstood experiment of all time: the lemon battery. The take home message in this one is: the electricity is NOT in the...
SciShow
This Is Not What an Atom Looks Like
What does an atom look like? Throughout history scientists and philosophers have attempted to answer this question. As a result, they've come up with some useful models for understanding the building blocks of our universe.
Bozeman Science
Emission and Absorption Spectra
In this video Paul Andersen explains how the photons emitted from or absorbed by an atom or nuclei is directly related to electrons moving between energy level. Absorption and emission are a direct result of the conservation of energy....
Bozeman Science
Magnetic Properties
In this video Paul Andersen explains how all material has magnetic properties. Ferromagnetic material can be permanently magnetized, paramagnetic material will align with magnetic fields, and diamagnetic material will align weakly with...
SciShow
How Does Activated Charcoal Work?
You may know it as a miracle powder or an ice cream flavor, but activated charcoal can do some pretty cool stuff.
Bozeman Science
Fundamental Particles
In this video Paul Andersen explains how at the smallest level all matter is made of fundamental particles; including quarks, electron, photons and neutrinos. He explains how understanding the properties of these particles allows us to...
TED-Ed
TED-ED: The strengths and weaknesses of acids and bases - George Zaidan and Charles Morton
Vinegar may have a powerful smell, but did you know it's actually a weak acid? In the chemical economy, acids actively give away their protons while bases actively collect them -- but some more aggressively than others. George Zaidan and...
SciShow
Plasma, The Most Common Phase of Matter in the Universe
Get to know plasma, the most common, but probably least understood, phase of matter in the universe!
Crash Course
Network Solids and Carbon: Crash Course Chemistry
In this episode, Hank talks about Network solids and Carbon and how you can actually create a Diamond from plain old Carbon... well, YOU probably can't unless you own a bunch of elephants. It's a long story. BUT, within you will learn...
Bozeman Science
Electrostatic Induction
In this video Paul Andersen explains how the charge distribution can be affected my electric forces produced by a charged object. In an insulator charges are fixed but in conductors the charges can move. Induction occurs when the charges...
TED-Ed
TED-Ed: Why a sausage can do what your gloves cannot | Charles Wallace and Sajan Saini
In 2010, South Korea experienced a particularly cold winter. People couldn't activate their smartphones while wearing gloves, so they began wielding snack sausages— causing one company to see a 40% rise in sausage sales. So, what could...