Leiden (Leyden) Jar Capacitor

The first capacitor was called a Leiden jar, or Leyden jar. It was accidentally discovered that a large amount of charge could be stored on a Leyden jar from the unexpected shock! I will show how I constructed my Leiden jar, charge the Leiden jar using a Van de Graaff generator, and demonstrate rapid discharging (dielectric breakdown) resulting in an intense spark.

Пікірлер: 48

  • @t.s.5668
    @t.s.5668 Жыл бұрын

    wow this was the most complete video so far I have found on this subject, thanks

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    Жыл бұрын

    You are welcome and thanks for your comment!

  • @richardchandler5183
    @richardchandler51834 күн бұрын

    Really nice demo and explanation plus very interesting watching you make the Leydon Jar.

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 күн бұрын

    Thanks, glad you enjoyed it!

  • @aggiornamento4186
    @aggiornamento41862 жыл бұрын

    Good explanation. You use very clear and precise terms to explain. This results in a easy to understand experiment. Thaks! It was useful to me!

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    Thanks for the kind comments and you are welcome!

  • @davebacknolaliki1452
    @davebacknolaliki1452 Жыл бұрын

    I appreciate these videos. Very good explanation.

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    Жыл бұрын

    You are welcome and thank you.

  • @aditi2326
    @aditi2326 Жыл бұрын

    Detailed explanation I really appreciate it

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    Жыл бұрын

    You are welcome!

  • @grzegorzfranciszek5878
    @grzegorzfranciszek58782 жыл бұрын

    Good job bro👍

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    Thanks again!

  • @nenisrudani504
    @nenisrudani5042 жыл бұрын

    Thank you thank you so much

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    You are most welcome!

  • @natesgarage
    @natesgarage2 жыл бұрын

    Thanks for the explanation! Quick question if I may, why the selection of copper tape combined with aluminum tape? Would it have worked using copper on the inside and out?

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    Yes it would work with the same metal inside and out. I used the different metals so that the two conductors would be more visible.

  • @itsbs
    @itsbs3 жыл бұрын

    Thanks. So Ben Franklin says the charge of the Leiden Jar (capacitor) is stored in the glass and does not require the electric field of the metal plates to remain in place. What do you think? Have you thought of building a dissectible Leiden Jar or a parallel plate capacitor with a removable dielectric to experiment with this idea?

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    3 жыл бұрын

    The dielectric does do more than just hold the two plates apart. It becomes polarized and affects how much energy is stored in the capacitor for a given voltage applied. Here are some videos where I discuss the polarization that goes on in the dielectrics. This one is an example I work in class of a parallel plate capacitor with two different dielectrics in parallel. kzread.info/dash/bejne/oZVt05dugKuWXdY.html This one is an example I work in class of a parallel plate capacitor with two different dielectrics in series. kzread.info/dash/bejne/nZ9ordGdY9vHhtY.html

  • @itsbs

    @itsbs

    3 жыл бұрын

    @@electricandmagneticfields2314 ** Thanks Michael. From your examples, you discuss the "charge density on the plate." This is exactly the concept that a dissectible capacitor refutes. If you take away the metal plates after charging the parallel plate capacitor, and then move the "charged dielectric" to a different set of metal plates, what happens? Would it discharge? Same with the Leiden Jar, if you had removable aluminum/copper and replaced it with different metal coatings (after the jar was charged), would it still discharge?

  • @gioacchinomanduano3701
    @gioacchinomanduano37012 жыл бұрын

    Nice video, i have a question we have sparks even if the wire of exernal conductor is not connected to the jar

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    Possibly if the external conductor can effectively act as a ground. But be careful because you might end up being the ground and get a very dangerous shock.

  • @johndoe-bq1xt
    @johndoe-bq1xt9 ай бұрын

    Hello Sir, I have a question. Of course, you know about the discharge time from a capacitor, or Tau = RxC. What Homemade Resistance can I attach to a Leiden Jar to slow the discharge time? Not Circuit Components.

  • @user-pu5tj7nh7f
    @user-pu5tj7nh7f3 ай бұрын

    Does the distance affect the capacitance of the Van de Graaff generator vs the Leyden jar? For example, because the charge has to travel through air to reach the receiving conductor in the VDG generator, does that affect the capacitance?

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    3 ай бұрын

    It is like two capacitors in series. The connecting wire should not matter.

  • @stanaoves3943
    @stanaoves39432 жыл бұрын

    Whats the Reason for the diferent types of metal Tapes? Wouldn't the aluminium one be enough just by it self?

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    It would. I used the two different tapes so that the inner and outer conductions would be distinguishable in the video.

  • @dmaster20ify

    @dmaster20ify

    2 жыл бұрын

    @@electricandmagneticfields2314 But it is rather misleading. I had the same confusion.

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    @@dmaster20ify I should have mentioned why I used the two different metals in the video and that it was in material to the operation of the capacitor.

  • @selkirkwildlife9426
    @selkirkwildlife9426Ай бұрын

    How did your Casio fare from the Van de Graaff sparks? :)

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    Ай бұрын

    My watch? It survived, but I probably should have taken it off!

  • @keithtaylor6259
    @keithtaylor62593 ай бұрын

    If it were big enough would a leyden jar be able to power a 2 story house if SHTF and for how long ?

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    3 ай бұрын

    Yes you could store energy in capacitors just as you do in batteries. www.futurebridge.com/industry/perspectives-mobility/supercapacitors-a-viable-alternative-to-lithium-ion-battery-technology/

  • @h7opolo
    @h7opolo2 жыл бұрын

    so we never see electricity, we just see the after effects of it traveling through a gas.

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    Yes

  • @HazemMohamed3148
    @HazemMohamed31483 жыл бұрын

    Can u please make a video on the CRT?

  • @jakub3851

    @jakub3851

    2 жыл бұрын

    What do you mean?

  • @jakub3851
    @jakub38512 жыл бұрын

    Here is a more intense video kzread.info/dash/bejne/dWGVx6mfh8StpMY.html

  • @Resonanttheme
    @Resonanttheme7 ай бұрын

    Maybe of interest - a Leyden jar using a LDPE bottle and charged by rubbing a paper towel over a PVC tube making a thirty three centimeter spark. kzread.info/dash/bejne/fYGFu9JrYZvHXbQ.html

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    7 ай бұрын

    Impressive!

  • @dmaster20ify
    @dmaster20ify2 жыл бұрын

    Very poor explanation. Where is the water in the jar. I heard that the water stored the charge? What is storing the charge in your Leydon Jar? Why didn't you disconnect the Leydon Jar from the Van de Grauf machine? I can't reproduce the Leydon Jar experiment. It is beginning to sound phony. But I never was able to reproduce any scientific experiment. Not able to create a motor. Not able to create an electro magnet! What gives?

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    I have metal foil on the inside and outside of the jar where the charge is stored. I could have used water on the inside instead of the metal to act as one of the "plates." I don't see a need to have disconnected the Van de Graaff generator for what I was trying to demonstrate in the video..

  • @dmaster20ify

    @dmaster20ify

    2 жыл бұрын

    @@electricandmagneticfields2314 But the Van de Graaff machine could be the source of the electricity. I can't reproduce this Leydon stuff. I tried you foil paper inside and outside the jar. Plastic jar that the peanut butter comes in. I bored a hole in said cover and put a wire through it and taped it to the foil inside the jar. I taped the foil paper in and out of the jar. Corked the jar. I then attached a 3.8 volt charger to the wire for couple seconds. I then connect a wire to the two terminals of the Leydon Jar; nothing. I then connect the jar to 110 volts, nothing. I then connect 110 volt plug to each terminal of the jar, still nothing. Is it because I am black why I can't reproduce these experiments.

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    @@dmaster20ify I rarely get my demo projects to work the first time. Every time I do one it is a learning experience. You might actually have a capacitor. With a 3.8 V on the capacitor, you would not get a spark until the separation between a wire touching the inside and a wire touching the outside was less than 0.0001 cm apart. The dielectric breakdown strength of air is 30,000 V/cm. Connecting to 110 AC is dangerous, but since it is AC your capacitor can be anywhere between 0 and 110 volts across it. A simple device I have used to charge a Leyden jar so as to get a spark is the electrophorus kzread.info/dash/bejne/Zp9h3JeIY7vRZKQ.html kzread.info/dash/bejne/haWcydSwY8Wqnbg.html

  • @dmaster20ify

    @dmaster20ify

    2 жыл бұрын

    @@electricandmagneticfields2314 All I can say I appreciate your replies and explanation. I don't know what is electrophorus; and honestly and am no closer to figuring this out. This seems as complicated as getting a seed to grow.

  • @electricandmagneticfields2314

    @electricandmagneticfields2314

    2 жыл бұрын

    @@dmaster20ify I included a link to an electrophorus. It is a static charge generated. It is just a piece of plastic, something like silk to rub it to get charge on the plastic, and a plate of metal with an insulating handle. I have successfully charged capacitors to high voltage with this.