Polyphase coils are electromagnetic coils connected together in a polyphase system such as a generator or motor. In modern systems, the number of phases is usually three or a multiple of three. Each phase carries a sinusoidal alternating current whose phase is delayed relative to one of its neighbours and advanced relative to its other neighbour. The phase currents are separated in time evenly within each period of the alternating current. For example, in a three-phase system, the phases are separated from each other by one-third of the period. (Wikipedia).
Can you solve this unique challenge?
Spring/Latch Polymagnets: this pair of coded magnets attract but don’t touch in a state of stable equilibrium at a distance of 1/2 cm- but if one magnet is turned a half twist they latch together. Magnetic viewing film reveals the specific and complex arrangement of N and S poles that allo
From playlist physicsfun PUZZLES, ILLUSIONS & CHALLENGES
History of 3-phase Electricity & Distribution
Who invented 3-phase electrical distribution? Nikola Tesla? Mikhail Dolivo-Dobrovolsky? In this video I go through the detailed history from primary sources of this important EE discovery, how it works, and why it is important. Links: My mailing list (with a link for a video on the histo
From playlist "The Lightning Tamers": A History of Electricity
Tesla Fact vs. Fiction: Why the Public Perception is Wrong
Almost everything commonly told about Tesla is wrong! He didn't invent AC, he didn't battle Edison over AC vs. DC, he didn't even have a rivalry with Edison, he didn't want to give everyone free electricity and he wasn't a Physics genius! Referencing primary sources I can show you why we
From playlist "The Lightning Tamers": A History of Electricity
Tesla Bifilar coil and high frequency experiments!
In this video i show Tesla bifilar coil which turn on fluorescent 240V and how bifilar can used for loudspeaker. Enjoy!!!
From playlist ELECTROMAGNETISM
Understanding RMF | The driving force behind every AC machine
Every AC machine uses a rotating magnetic field, an invention that kicked off the industrial revolution. Can you guess how the RMF reached this stage! In this video, we’ll travel through the minds of the geniuses behind the development of RMF. The greatest contribution can perhaps be attri
From playlist Electrical Machines
Physics of "The Current War": Edison, Westinghouse & Tesla (AC vs. DC)
Why did Siemens say that AC was "pure humbug" and why did Edison think that Westinghouse would kill a customer within 6 months and what does that have to do with the electric chair? Watch this video for a simple but not simplistic explanation of the Physics behind the "War of the Currents
From playlist "The Lightning Tamers": A History of Electricity
How Tesla and Ferraris Created the First Polyphase Motor
In 1888, both Nikola Tesla and Galileo Ferraris published a similar description of a 2-phase motor and generator. I show how and why Ferraris was inspired by optics and Tesla by Arago's wheel. Links: My mailing list: https://kathylovesphysics.ck.page/welcome My Patreon Page: https://w
From playlist "The Lightning Tamers": A History of Electricity
Make a mini "Tesla coil" (Easy to make)
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From playlist ELECTROMAGNETISM
Magnetism (5 of 13) Magnetic Field of a Coil, An Explanation
Explains how to calculate the magnitude of the magnetic field inside a coil of wire. The magnetic field in the coil of wire is homogenous and is shown in this video using iron filings and compasses. The magnetic field strength is directly proportional to the number of winding and the cur
From playlist Magnets, Magnetism and Charges in Magnetic Fields
Episode 38: Alternating Current - The Mechanical Universe
Episode 38. Alternating Current: Electromagnetic induction makes it easy to generate alternating current while transformers make it practical to distribute it over long distances. “The Mechanical Universe,” is a critically-acclaimed series of 52 thirty-minute videos covering the basic top
From playlist The Mechanical Universe
AWESOME DEMONSTRATION TESLA COIL!!!
A Tesla coil is a radio frequency oscillator that drives an air-core double-tuned resonant transformer to produce high voltages at low currents. Tesla's original circuits as well as most modern coils use a simple spark gap to excite oscillations in the tuned transformer. More sophisticated
From playlist STATIC ELECTRICITY
Physics - Magnetic Field Generated by Moving Charges and Currents (9 of 12) Coil
Visit http://ilectureonline.com for more math and science lectures! In this ninth of the twelve part series I will show you how to find the magnetic field inside a coil.
From playlist PHYSICS - ELECTRICITY AND MAGNETISM 3
How to make a Desktop Tesla Coil
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From playlist High voltage
What Is The Best Way To Sleep?
Please Subscribe! http://testu.be/1FjtHn5 A good nights sleep is critical for health, creativity, and even preventing disease and disorders. Are you letting your body rejuvenate properly? + + + + + + + + TestTube Plus is built for enthusiastic science fans seeking out comprehensive conv
From playlist Seeker Plus
What Do Scientists Really Know About Polyphasic Sleep?
It is important to get enough sleep, but what happens when you get those eight hours in little naps instead of in one big chunk at night? Hosted by: Michael Aranda Head to https://scishowfinds.com/ for hand selected artifacts of the universe! ---------- Support SciShow by becoming a pat
From playlist Biology
Just what exactly would happen to your body if instead of sleeping you decided to only take naps. - Thanks to LastPass for sponsoring this video! To create a LastPass account for free & support Life Noggin, go to: http://bit.ly/2LLSQLT Watch more: Live 200 Years? This Is How You Could Do
From playlist Latest Uploads | Life Noggin
Quick Physics: induction coil explained
What is an induction coil? How is it related to transformers? A quick demo and explanation and how it is related to transformers See www.physicshigh.com for all my videos and other resources. If you like this video, please press the LIKE and SHARE with your peers. And please add a COMMENT
From playlist Quick Physics
Voltage Multiplier Circuit Using Diodes and Capacitors
This electronics video tutorial explains the workings of a voltage multiplier circuit that can be made using diodes and capacitors. This circuit converts an AC signal into a DC voltage with an output that is nearly x2, x4, or even x6 the input voltage. 1N4007 Diodes: https://amzn.to/2Ub
From playlist Electronic Circuits
In the future, will we eliminate the need for sleep? Is it possible to get by on just a few hours' rest, or no sleep at all? We take a look at slumberland and how technology might play a role in helping us get the rest we need. ------------------------------------------------------- Subs
From playlist Fw:Thinking
From playlist All Demos