SciShow
The Physics of the Weird and Wonderful Theremin
Electronic music is older than you may think. Enter the theremin - a device that turns your body into part of a capacitor, and allows you to play music without even touching an instrument!
SciShow
Dimmer Switches: Secretly Strobe Lights
Having the ability to dim your lights seems like a pretty simple thing, but modern dimmer switches work in a surprisingly cool way!
SciShow
Is the Power Grid Ready for Green Energy?
Despite the rise of renewable energy, the backbone of the power grid is fossil fuels. Adapting the grid to green energy sources is more complicated than flipping a switch.
Crash Course
AC Circuits: Crash Course Physics
We've talked about AC Circuits, but now it's time to delve into the world of AC Circuits (or Alternating Currents). We’ve talked about how they change voltage, which helps transmit electricity over long distances, but there’s so much...
Curated Video
Diode
An electronic component that allows current to flow in only one direction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films...
Curated Video
Direct current (DC)
An electric current in which the flow of electric charge is consistently in one direction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Alternating current
An electric current in which the flow of electric charge periodically changes direction. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Transformer
A device used to change the voltage of an alternating current. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science Glossary Films reinforce...
Curated Video
Electromagnetic induction
The generation of a voltage in a conductor when placed within a changing magnetic field. A Twig Science Glossary Film. Key scientific terms defined in just 60 seconds using stunning images and concise textual definitions. Twig Science...
Curated Video
Electricity in Medicine
Discover how doctors use electricity in the human body to stimulate and suppress muscles - and save lives. Physics - Electricity And Circuits - Learning Points. Electricity is a useful tool in medicine and saves lives. An electric shock...
Curated Video
AC, DC and Transformers
Power loss affects electricity supply, especially to homes far from power stations. Why is power lost, and how is electricity effectively transported over long distances? Physics - Electricity And Circuits - Learning Points. Direct...
Curated Video
War of the Currents
The battle between famous 19th century inventors Edison and Tesla for a slice of America's electricity market, and the lengths they went to in order to secure it. Physics - Electricity And Circuits - Learning Points. Thomas Edison...
Curated Video
GCSE Physics - Radio Waves #65
In this video we cover: - How radio waves can be transmitted using oscilloscopes, transmitters, and receivers - How the transmission of radio waves can be used to transfer information - The three different types of radio waves, and how...
Curated Video
GCSE Physics - Alternating (AC) and Direct Current (DC) #21
This video covers: - The difference between alternating current and direct current - Voltage-time graphs - Oscilloscopes General info: - Suitable for all GCSE and IGCSE courses - Suitable for higher and foundation tiers - Suitable for...
Curated Video
Electricity: Can’t Live Without It
Dr. Forrester identifies the changes that have occurred over time with electricity by describing how electricity has changed the way we live. She explains how electricity has become safer by researching inventions over the centuries.
Curated Video
A Shocking Discovery
Dr. Forrester examines the discovery of electricity by creating a timeline. She also shares information about Thomas Edison and his invention of the light bulb.
Curated Video
Ground Rod Explained
What is a ground rod used for? what does it connect to. Find out in this video.
Curated Video
AC Electrical Generator Basics - How electricity is generated
Electrical generator basics. Learn the basic operation of an electrical generator, learn how magnets are used to generate electricity in a coil of wire. We then cover 3 phase three phase electricity and briefly the star configuration in...
Curated Video
Star Delta Starter Explained - Working Principle
Star Delta Starters Explained. How do star delta starters work for three phase induction motors and why do we use star delta starters. We cover the basic's of how three phase induction motors work. The basics of each star and delta...
Curated Video
How Receptacles Work - The basic working principle explained grounding
How Receptacles Work. In this video we look at how receptacles work, the different parts, how to wire a receptacle, how to control a switched receptacle, split circuit receptacles as well as how the ground wire works.
Curated Video
Ground Wire Explained
Ground wire explained. What is the purpose of the ground wire, what does it connect to, when is it used, why is it used.
Curated Video
Ground Neutral and Hot wires explained - electrical engineering grounding ground fault
Ground neutral and hot wires explained. In this video we look at the difference and purpose of the ground wire, the hot wire and the neutral wire in a north american residential electrical system. We look at ground faults, GFCI, current,...
Curated Video
Circulating Pump Basics - How a pump works HVAC heating pump working principle
Circulating pump and heating pumps explained. In this video we look at circulating pumps used in hot water and heating systems to understand the main parts as well as how they work. We cover applications of circulating pumps, why they're...
Curated Video
AC Voltage Calculation - Vrms Vmax Frequency
Learn how AC voltage varies with AC since wave and how to calculate the Vrms root mean squared, vmax, peak voltage, the frequency and voltage of different countries.