This video shows how semolina falls down a long plastic tube. As it does so ...
This video shows how semolina falls down a long plastic tube. As it does so it acquires a static charge via friction. As the semolina grains fall into a copper ...can an electroscope is charged by the accumulation of semolina and charged grains. When you touch the can the charge leaks away. This clearly shows why we need a static wire to release charge in certain circumstances.[+] Show More
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Electrostatic effects on water
Use a charged insulating rod to attract or repel water which is a strongly ...
Use a charged insulating rod to attract or repel water which is a strongly polar molecule.
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Plasma Ball and Static causing excitation of a low
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Shuttling Electric Charge - AQA A Level Physics
This simple demo shows how charges are built up on a metallic plate. Then ...
This simple demo shows how charges are built up on a metallic plate. Then an uncharged ball which is coated in graphite (conductor) picks up charges to become the same ...charge as the plate. Then the ball is repelled and moves towards a grounded plate offloading the charge. The pattern is repeated forming an electric current.
The Physics is simple....
1/T = f for the ball Q = It
so you can sub in t for T in this case and in fact work out the charge flowed to the device and the number of electrons that has flowed. However you will need a nA to accomplish this in practice.
This version shows me tapping off charge with a light bulb and also right at the end you can see when the ball is moving very fast it actually has small sparks!
This video was recorded when Colonel Frank Seely visited Nottingham ...
This video was recorded when Colonel Frank Seely visited Nottingham University and the students had a fantastic day seeing all manner or cool and interesting phenomena.
In this case it ...was a Tesla coil producing electrical discharge which actually creates the musical sound (output as voltage from a laptop PC) as well (just like thunder). You simply alternate voltage across a primary coil (like a transformer) and capacitor (something to store electrical charge) setup at the base of the machine, this creates another alternating voltage in the stem on a secondary coil (stepped up p.d) with more capacitance. The two circuits have to have a similar resonant frequency (quite complex A-Level Physics equation) f = 1/ pi*(LC)^0.5 where C = Capacitance (a store of energy) L = inductance (the ratio of the voltage to the rate of change of current). In essence we step up the P.D. transfer the charge to the toroid (donut shape on top) and then let it leak away.
Coin & Styrofoam ball(conductive ink painted) electrostatic indicator. This ...
Coin & Styrofoam ball(conductive ink painted) electrostatic indicator. This is Franklin's Bell experiment. Conductive ink used in this video is carbon ink.
동전과 스티로폼 공을 이용한 정전기 감지장치 입니다. 공이 움직이는 것은 프랭클린 ...벨의 원리와 같습니다.
1. 스티로폼 공에 먹물이나 전도성 잉크를 칠한 다음, 잘 말려줍니다. 2. 플라스틱 대롱을 적당한 크기로 잘라서 내부에 공을 넣은 다음, 동전으로 양쪽을 막아줍니다. 3. 양 동전 사이에 전위차를 주면, 정전기 인력으로 스티로폼 공이 어느 한쪽 동전으로 끌려가게 되고, 접촉하는 순간 같은 전하를 갖게 되어 밀어내게 되므로, 정전기가 없어질 때 까지 스티로폼 공은 왕복운동을 하게 됩니다.[+] Show More
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GCSE Science Revision - Painting using Static Electricity
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Long hair vs. Van de Graaff generator
I visited the University of Sydney and had some fun with a Van de Graaff ...
I visited the University of Sydney and had some fun with a Van de Graaff generator seeing how it would affect my hair.
This video covers: - That static charge builds up on non-conducting ...
This video covers: - That static charge builds up on non-conducting materials by the transfer of electrons - Static charge doesn't normally build up on conducting materials, but can occasionally - ...When static charge is discharged it can cause a spark
General info: - Suitable for all GCSE and IGCSE courses - See below for whether it is higher or foundation tier for your exam board - See below for whether it is triple or combined for your exam board
Exam board specific info: AQA - Only triple science (both foundation and higher tier) IGCSE Edexcel - Only triple science (and only higher tier) Edexcel - Only triple science (both foundation and higher tier) OCR 21st Century - Only triple science (both foundation and higher tier) OCR Gateway - Only triple science (both foundation and higher tier)[+] Show More
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Tesla Coil - Amazing Physics - Best Ever Sparks
This is a Tesla coil producing electrical discharge which actually creates ...
This is a Tesla coil producing electrical discharge which actually creates the musical sound (output as voltage from a laptop PC) as well (just like thunder).
You simply alternate voltage ...across a primary coil (like a transformer) and capacitor (something to store electrical charge) setup at the base of the machine, this creates another alternating voltage in the stem on a secondary coil (stepped up p.d) with more capacitance.
The two circuits have to have a similar resonant frequency (quite complex A-Level Physics equation) f = 1/ pi*(LC)^0.5 where C = Capacitance (a store of energy) L = inductance (the ratio of the voltage to the rate of change of current).
In essence we step up the P.D. transfer the charge to the toroid (donut shape on top) and then let it leak away.
We can use the Tesla coil to have a lot of fun, so watch out for the next videos coming![+] Show More
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Deadly Sparks - Wimshurst Machine and Leyden Jars - Electrocution?
The Wimshurst machine is an electrostatic generator. Its a machine for ...
The Wimshurst machine is an electrostatic generator.
Its a machine for generating high voltages or potential differences and developed between 1880 and 1883 by British inventor James Wimshurst
It has a ...distinctive appearance with two large contra-rotating discs mounted in a vertical plane and a spark gap formed by two metal spheres.
At the bottom you can see two Leyden jars or Leiden jars which are an electrical component which stores a high-voltage electric charge (from an external source) between electrical conductors on the inside and outside of a glass jar. It typically consists of a glass jar with metal foil cemented to the inside and the outside surfaces, and a metal terminal projecting vertically through the jar lid to make contact with the inner foil. It was the original form of the capacitor and in this case attached to increase the amount of charges that can be held on the machine.
We can use it for electrostatic experiments like the van de graff generator. However, we must be very careful as the sparks are really quite powerful and to touch the machine without grounding it first will give you a very nasty shock.
PLEASE DON’T try this at home it will give you a really nasty shock much worse than a VDG[+] Show More
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Plasma Ball Arcing on a Pear
This super video shows how the high potential on the ball breaks down the ...
This super video shows how the high potential on the ball breaks down the resistance of the air.
Very strange effect takes place as the fruit seems to allow more ...current to flow off the ball compared to the insulating ball.
This means it really does arc and burns the skin on the fruit, smells bad and really hurts your finger.[+] Show More
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Coulomb Meter v Plasma Ball
This simple video shows how a coulomb meter can be used to show charged ...
This simple video shows how a coulomb meter can be used to show charged particles moving from the plasma ball.
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Plasma Ball Electrocutes Human? - GCSE Physics
Plasma Ball and human conduction, what is there not to love! Sparks fly but ...
Plasma Ball and human conduction, what is there not to love!
Sparks fly but nobody was permanently injured in this move.
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