TED Talks
TED: When to take a stand -- and when to let it go | Ash Beckham
Ash Beckham recently found herself in a situation that made her ask: who am I? She felt pulled between two roles — as an aunt and as an advocate. Each of us feels this struggle sometimes, she says -- and offers bold suggestions for how...
SciShow
Tractor Beams: Almost Real!
Hank tells us about some developments that are being made in the dramatic area of laser tractor beams.
Crash Course
Polar & Non-Polar Molecules: Crash Course Chemistry
Molecules come in infinite varieties, so in order to help the complicated chemical world make a little more sense, we classify and categorize them. One of the most important of those classifications is whether a molecule is polar or...
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...
Crash Course
Water - Liquid Awesome: Crash Course Biology
Hank teaches us why water is one of the most fascinating and important substances in the universe.
Crash Course
Solutions: Crash Course Chemistry
This week, Hank elaborates on why Fugu can kill you by illustrating the ideas of solutions and discussing molarity, molality, and mass percent. Also, why polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar...
Crash Course
Atomic Hook-Ups - Types of Chemical Bonds: Crash Course Chemistry
Atoms are a lot like us - we call their relationships "bonds," and there are many different types. Each kind of atomic relationship requires a different type of energy, but they all do best when they settle into the lowest stress...
Crash Course
Memory & Storage: Crash Course Computer Science
So we’ve talked about computer memory a couple times in this series, but what we haven’t talked about is storage. Data written to storage, like your hard drive, is a little different, because it will still be there even if the power goes...
Bozeman Science
ESS2C - The Role of Water in Earth's Surface Processes
In this video Paul Andersen explains the vital role that water plays in the processes on the Earth's surface. Water has several unique properties including high heat capacity, transparency, polarity and the ability to change the chemical...
Curated Video
Molecules, compounds and types of chemical bonds
What is the difference between a molecule and a compound? What are the main types of chemical bonds? In this video, we will be answering those questions and more.
Curated Video
Polarity
Electrical polarity is the arrangement of positive and negative charge in an electrical circuit, or distribution of positive and negative charge in, for example, a chemical bond. A Twig Science Glossary Film. Key scientific terms defined...
Curated Video
Polar And Nonpolar Covalent Bonds: Easy Explanation With Examples - Chemistry Basics
Are you struggling to understand the difference between polar and nonpolar covalent bonds? This video explains these important chemistry concepts with simple explanations and clear examples. Learn how electronegativity affects bond...
Curated Video
Inductive Effect and Dipole Moment: Molecular Attraction Revealed
The inductive effect can also influence a molecule’s dipole moment, which measures the separation of charges within a molecule. Electron-withdrawing groups create a stronger dipole by pulling electron density away from less...
Curated Video
Electron Push and Pull: Inductive Effects Explained
The inductive effect is all about how atoms in a molecule affect electron distribution. Electron-withdrawing groups, like halogens, pull electrons through sigma bonds, reducing electron density in adjacent atoms. Conversely,...
Science Buddies
How to Use Buzzers (Active and Passive) with an Arduino (Lesson #20)
Learn how to use both active and passive buzzers to add sound to your Arduino projects.
Curated Video
Stepper Motor - What's inside?
What's inside a stepper motor? in this video we learn what components are inside a stepper motor.
Curated Video
Hybrid Stepper Motor Basics
Learn how hybrid stepper motor works in this video on hybrid stepper motor basics, covering the rotational magnetic field as well as the rotor and stator.
Curated Video
How does an Electric Motor work? (DC Motor)
In this video, we'll look at how an electric motor works- specifically, the DC motor. We'll discuss the different parts of the motor, and how they work together to create movement.
Curated Video
How Stepper Motors Work - Electric motor
Stepper motors. How electric motors work, stepper motors explained. Learn how they work and why they are used from the basics. Learn the main parts, how it works, controller, driver, stepper motor types, what is a step, hybrid stepper...
Curated Video
Electric Motor Build - Make a simple electric motor
Learn to build a simple electric motor as well as how the motor works. We cover the rotor, shaft, commutator, stator and magnets to learn how an electric motor works.
Curated Video
How EEV works - Electronic Expansion Valve working principle, HVAC Basics
How does an electronic expansion valve work EEV EXV. In this video we're going to cover the basic working principles for how an electronic expansion valve works in a refrigeration system. Learn HVAC enineering with animations and 3d models.
Professor Dave Explains
Performing Column Chromatography
We just learned about thin layer chromatography, but a much more industrially relevant technique is column chromatography. This is how we will separate large quantities of compounds in a mixture by virtue of their differing polarities....
TMW Media
Cochlear Implants: Determining if a cochlear implant is needed
Is it difficult for babies with hearing loss to communicate and learn? How can people tell if babies can't hear? What is a cochlear implant? Cochlear Implants, Part 1