Leyden jars

[advthinker]

Great video! now for some fun you should paint numbers on the balls and have shutes that they can pop out and be seen just like a lotto machine.

[acmdq2007]

@mrconradhoppe The Earth forms a sort of capacitor having the ground as a plate and the higher parts of the atmosphere, that conduct electricity quite well, as the other.

[maintoc]

I thought Leyden jars were more a type of early capacitor. I heard the glass they used for the glass jars had a different composition than modern glass, and that modern glass leaks away the built-up charge too quickly. ~ What is the function of the cup with water (aside from providing you a drink when you're thirsty :p ), please?

[acmdq2007]

@maintoc Leyden jars are capacitors. Regular glass is very hygroscopic, and only insulates well when very dry. A layer of varnish or wax over the glass improves the insulation. Pyrex glass is better as insulator, but plastics are always better. The plastic cup makes a capacitor with the water as one plate and the table below as the other. The original Leyden jar was a glass bottle with water inside.

[maintoc]

@acmdq2007 Many thanks for the reply & explanation.

[JRmovielines]

is it possible to light a LED with a leyden jar and static electricity?

[acmdq2007]

@JRmovielines Just in brief flashes if you discharge the jar through the LED. I have a polarity detector that is two LEDs in antiparallel with two series resistors ending in points. A large jar will destroy a LED.

[camilarener1]

é agua que tem dentro do copo?

[acmdq2007]

É. Só água, com a corrente tocando nela.

[louisandtamsin]

So fucking cool. How do you make these?

[lorek55]

not cool, leyden's my last name

[onthecuttingedge2005]

Fill the jar with powdered graphite to increase surface area that will increase potential.

[acmdq2007]

This would not make any significant difference. Practically all the charge inside the jar is at the surface facing the outer plate, or at the bottom of the water cup.

[Pujc]

whats are inside that many lil black matreial ?

[1BustedMyth]

NICE !!!

[jupy921]

Nice video; hailstorm boxes are so cool.

[iseealavalamp]

I've been reading a bit about leyden jars and noticed a distinct difference in your design, your leyden jar didn't have the metal ball on top like most. Would you say that would hinder the jar's efficiency in keeping a charge?

[acmdq2007]

A ring of thick wire instead of a ball works well too. A ball would be better, but at the voltages used would make little difference.

[Slipknot808]

How long will it maintain it's charge?

[acmdq2007]

If everything is clean and dry, several hours. More usually, the total charge for a few seconds, a residue for a few minutes.

[ablublibleblu]

realy interesting

do you make all at home?

[maximumgravity]

Interesting idea using chain instead of wire. You can see the tension in the chain when the Leyden jar is charged, and you can see it relax as it discharges.

[anajesusa]

The box containing the balls painted with ink, which is tops? Say materials is made. I try to replicate the experience.

Sorry for my English rustic

[acmdq2007]

The box material is acrylic. The top and bottom are wood disks.

[procurado182]

Muito bom ! Very good !

[acmdq2007]

The balls are plastic foam balls painted with China ink, to become conductive. Some balls are not painted (white). They become negatively charged by friction and are always attracted to the positive side of the box. Note that they are at the top in the first segment and at the bottom at the second, as different polarities were used to charge the device.

[alex681219]

Muito bonito, Try with a kelvin drooper .

The craizy black points are peper seeds?