JoAnn Kuchera-Morin demos the AlloSphere, a new way to see, hear and interpret scientific data. Dive into the brain, feel electron spin, hear the music of the elements ... and detect previously unseen patterns that could lead to new...

Hank reaches the fourth and final of the four fundamental interactions in physics: electromagnetism. In this part, he teaches us about the electrostatic force, which builds up a charge in an object and can travel in the form of an...

Band Theory Dissection: Conduction in Various Substances

The band theory of solids is a fundamental concept in solid-state physics that explains the conduction of electricity in substances based on the arrangement of energy levels...

Why does metal expand when it gets hot?
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Material processes - Changing materials - Expansion
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Learning Points
Conductors are materials that allow
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nergy to flow easily...

In this video we learn how three phase electricity works from the basics. We explain how three phase electricity is generated, how the voltages vary, how to calculate the voltages and vrms, what frequency, hertz and cycle mean and how...

Multi-LED circuit. How to design a circuit which uses multiple LED's or multi-colored LED's. We learn the basics in this video with full calculations to design electronic circuits.<br/>

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.

Conventional current and electron flow. In this video we briefly learn the difference between conventional current and electron flow. We learn how the electron was discovered and why battery terminals are positive and negative. What is...

How long will a battery power a circuit? Learn how to estimate battery life in this video.

Nitric Oxide Synthase: Physiology, Biochemistry, and Mechanism

Series circuits DC Direct current. In this video we learn how DC series circuits work, looking at voltage, current, resistance, power consumption as well as how to use a multimeter. There's also a problem at the end of the video for you...

Parallel Circuits Explained. In this video we take a look at how DC parallel circuits work and consider voltage, current, resistance, power consumption as well as some worked examples and some test questions with solutions.

Variable Frequency Drives Explained - VFD basics. In this video we take a look at variable frequency drives to understand how they work in electrical engineering and power electronics. We look at where and why to use a VFD or VSD,...

Power inverter explained. In this video we take a look at how inverters work. We look at power inverters used in cars and solar power to understand the basics of how they operate. We then cover electricity fundamentals, direct current,...

In this video, we'll explain what a diode is and how it works.

Diodes Explained, in this tutorial we look at how diodes work, where diodes are used, why diodes are used, the different types. We look at diodes in half and full bridge rectifiers to convert AC to DC.

Batteries store chemical energy that can be converted into electricity, providing a source of power. By connecting a battery to a circuit, a chemical reaction takes place, causing a buildup of electrons at the anode and creating an...

What is electrical current? How does electricity work. In this video we learn what is electrical current, alternating current, direct current, ammeters, multimeter, power monitor, GFCI, circuit breaker, fuses, resistors and much much more!

Ohms Law Explained. In this video we take a look at Ohms law to understand how it works and how to use it. We look at voltage, current, resistance and the relationship between these. We also use ohms triangle to solve examples.

DC Motor explained - in this video we look at how does a dc motor work to understand the basic working principle of a DC motor. We consider conventional current, electron flow, the winding, armature, rotor, shaft, stator, brushes, brush...