Leyden Jar

Any suggestion on how to charge a Leyden Jar?

Topic by YoloPeeps 2 years ago  |  last reply 2 years ago


Clock in a jar

Here's a cool concept made by Oren Hetzroni. It's a clock in a jar where the hands move around the inside of the glass. Reading it is a little tricky, but if you match up the big and little hands with the numbers you can figure it out. Remaking this one is super easy. Just put the movement inside the lid and bend the hands at a right angle so they move around the side. jar via core77

Topic by fungus amungus 9 years ago  |  last reply 9 years ago


Mason jars? Answered

Does anyone know a commercial store where I could purchase a mason jar? I have already tried goodwill, Walmart, and brookshires. Any help?

Question by MrAngryPants 9 years ago  |  last reply 6 years ago


sauerkraut jar

I've seen jars for sale to make sauerkraut in b ut they are quite expensive (for little ol' fast food worker me, anyway). All they really look like are canning jars with a water or air lock of some kind stuck in the lid. anyone have any ideas of how i could make it myself? i need something like this instead of the traditional crock because of the odor. ~~Anna aka Thursday Next

Topic by Thursday Next 10 years ago  |  last reply 10 years ago


Cookie jar is closed!

What's this? Another batch of cookies? Sweet!Well, I have a fresh batch of cookie patches to give away and to get one all you have to do is make a new comment asking for one.Act fast, because the cookie jar closes at 4:30 pm PST.UPDATE: I just gave out a batch of cookies at 11:00 am. If you did not get one yet it's because you didn't ask for one. Yeah, I'm being a stickler like that today. Still 5.5 hours to go!

Topic by fungus amungus 9 years ago  |  last reply 9 years ago


Firefly Lights Jar

So while browsing Instructables, most times I see quite a few Instructables for the sun jars.  While on Think Geek today, I saw the Firefly Dreamlights Jar.  I was just wondering if someone wanted to take a crack at making it so that I can make one myself (im not that great with figuring out circuits on my own). http://www.thinkgeek.com/homeoffice/lights/e7a6/ Thanks!

Topic by BigDrig 7 years ago  |  last reply 7 years ago


Importing JARs in Eclipse

I am trying to import a .jar into an Eclipse Java project for use with the import command. Once again, me and my problem-solving-skill derived self can't seem to figure out how to do it. I've done it before, but i just forgot.UPDATE:What feels like 2 seconds after posting this, I discovered I just had a Referenced Archive to the Build Path. I do really weird things sometimes.

Topic by puffyfluff 10 years ago  |  last reply 10 years ago


Looking For A Bell Jar

Hello, I am a high school student from Boston, MA looking for a bell jar and corresponding stand/vacuum connection to conduct my experiments. I'm not looking for anything in particular, so long as it's not plastic (it will need to withstand some moderate electron bombardment). If you have anything, even if it's only something you can only lend to me, I am interested! Thanks! Xellers

Topic by Xellers 7 years ago  |  last reply 7 years ago


Jar of Fireflies remake?

Hey, I was just curious, I made a version of Keso's Jar of Fireflies a while back using all through-hole components. Do you think it would be worth it to basically copy/paste his instructable, but give a part list and a few notes on the few changes that needed to be made?

Topic by the_don125 10 years ago  |  last reply 10 years ago


Help with Leyden Jar Answered

I have seen many of the instructables about building a leyden jar, but I built two and I cannot seem to make either of them work. First I made the glass one. I filled it with salt water and stuck a long nail in through the lid because I couldn't fit my hand in to wrap it with aluminum foil on the inside. I sealed it well with hot glue and taped a very neat, crinkle-less strip of aluminum tape around it, the kind that is used for repairing air ducts. I tried charging it by rubbing around a fuzzy blanket on the carpet. That always produces a big spark, so while my brothers were rubbing their hair on the blanket and carpet, I was holding the metal tape around the glass jar with one hand and touching the grounded screw on the electrical plate with the other hand. When my brothers touched the nail on the top, we both felt a shock but when I tried to discharge it by touching my fingers to the nail and the tape at the same time, nothing happened. I don't think it is holding a charge at all. Next I didn't touch the metal tape at all, and we rubbed our hair on the blanket and touched the nail. But when I tried to discharge it, the same thing: no spark. So I assumed the glass was too thick, so I made the plastic one. This is made out of a Tang powdered drink mix container, I cleaned it, filled it with salt water, and wrapped the inside and outside with aluminum foil, as tightly on the sides as I could. I used a smaller nail this time, but I attached it to the inside aluminum foil with a thin strip of foil. I sealed the nail up and made sure there were no leaks. I performed all of the same tests as last time, but still no results. Can someone please help me figure out where i am going wrong? Thanks :)

Question by Technicolor 7 years ago  |  last reply 7 years ago


how to make a solar jar at home? Answered

Question by vigneshmani 7 years ago  |  last reply 7 years ago


Cookie jar is closed! Thanks to everyone who commented

OK, it's been a little while since the cookie jar has been open, but it has returned!Want to get a cookie patch? Follow these simple rules:- Make a new comment- Answer the question, "Who or what inspires you?"- Submit it before 4:30 pm PDT, August 21.OK, that's it. Share with us your source of inspiration!UPDATE: Wow, that was a big batch of cookies. Thanks to everyone who left a comment. It was great to see all the places and people that provide inspiration. If you didn't get a patch and should've, just send me a PM.

Topic by fungus amungus 9 years ago  |  last reply 9 years ago


What should I expect to see from my Leydens jar? Answered

My son has built 3 different Leyden's jars for a science fair. None seem to spark. The foil is very smooth( it looks like it was painted on) There are no holes. I've tried different chains. I've tried glass jars, as well as plastic. We are trying to charge to jar by rubbing a balloon on our heads and touching the metal ball on top. We hear a "pop" but never see a spark. We've continued this up to 100 times, and still no spark from the wire which touches the outside foil, and points to the metal ball on the lid. I'm definately no scientist! Do you have any ideas? I've tried holding the jar while charging it, as well as sitting it down, and I still get no results. The closest thing I've gotten was the balloon appeared to act like a magnet; it pulled the plastic jar closer when the balloon had static on it. Thank You, Jodie

Question by jodiebby 10 years ago  |  last reply 10 years ago




what is the ball on a leydon jar for?

Ive already tested other things to make the shock stronger, like putting a spring that allowed it to shock people without them touching the foil. i head the ball and magnet makes it stronger but i want to know how this works??? anyone plz tell me P.S Plasmana Rocks!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Question by ElectroManiac 10 years ago  |  last reply 10 years ago


Help with a sun jar idea? Answered

 So recently I saw the 'ible on here about how to make a sun jar, which I think is really awesome, and I want to make one now... The question I have though, is if anybody knows how to make a circuit, without programming that will make the light raise and lower in intensity, so basically, it has a very slow pulsate but it never turns off and doesn't go super dark either... I have been trying to address this problem myself for some time, but haven't come up with a clever solution yet. --Thanks!!

Question by arhodes18 9 years ago  |  last reply 9 years ago


Wanted: Jar O' Fireflies

Alright, so me and a friend went to the salvage yard this weekend and came up with mostly bubkis as far as awesome. EXCEPT for a really fun salt/pepper shaker set that looks like cowboy boots, and this nifty shaped light bulb (i'll get pics). it's freakin massive, it's at least a foot long and something like 6-7 inches across and has a really interesting shape. for $2 i couldn't really pass it up. while thinking up things to do with it i remembered the fireflies in a jar ible (https://www.instructables.com/id/Jar-of-Fireflies one of the many). now, i SUCK at electronics and i REALLY suck at soldering so there's almost no chance of me being able to make one of these. any chance someone would be willing to make me one (or if anyone has links to a place where i can by the sucker premade) i'd gladly pay for one.

Topic by crapflinger 9 years ago  |  last reply 8 years ago


Why did i forget to close the cookie jar? Answered

Just always wanted to know... Coz now my cookies are stale :(

Question by amann.nagi 10 years ago  |  last reply 8 years ago


Cookie jar is closed! Cookie patches delivered!

The cookie jar is open for the next day and a half. If you want a cookie, just follow these instructions: - Make a new comment - In 10 words or less write what your dream project is - Submit it before 4:30 pm PST, July 21.You don't need to ask for a cookie, you just need to put out your idea with 10 words or less.So... what's your dream project?UPDATE: The cookie jar is cloooooooosed! Thanks to everyone who posted a comment of their dream projects. It's always fun to dream and dream big. All of the cookie patches have been given out. I said 10 words and I meant it. I'm a stickler, I know, but I will be giving patches out again in the future 'cuz you're all awesome and it's fun.

Topic by fungus amungus 9 years ago  |  last reply 9 years ago


Cookie jar is closed! Thanks to all those who left a comment!

OK, I'm giving away some cookie patches again, but this time it's a little different. Remember, follow the rules or no cookie for you!So here's what you need to do: - make a new comment that says what your next project is - the comment must be 10 words or lessGot it? Also, the project can be something original or something that's been done a million times before. It can be something you're going to do tomorrow or hope to finish in your lifetime. It's up to you.This time the cookie jar will be open a little longer. The cookie jar will close tomorrow at 4:30 pm PST. That's July 9 at 4:30.All right, so what's your next project?UPDATE: Cookie jar is closed! Thanks to everyone who left a comment. It's cool to see what everyone's working on and I wish you all the best in getting it done.

Topic by fungus amungus 9 years ago  |  last reply 9 years ago


Can I be privileged by getting the answer on how to charge a leyden jar capacitor ?

I want it really fast as my exhibition stars 2 hrs from now.......................HELP!!!!!!!!!!!!!

Question by BANANI 8 years ago  |  last reply 8 years ago


May I know how I can increase the amount of sparks in a leyden jar and how much salt be dissolved pr litre water ?

It is asked inorder to create a perfect leyden jar..

Question by BANANI 8 years ago  |  last reply 8 years ago


what does the ball and magnet at the top of most leydon jars do?

I have my own leydon are and it isn't very big but I make huge shocks by charging it will my wool blanket. I tested ways to make it stronger and used a spring coiled which made it absorb more electricity and allowed me to shock people with a steady current without them touching the positive. I head something about the ball and magnet and I wanted to know what it is all about and how it makes it stronger or if it makes it collect static better or what plz answer.

Question by ElectroManiac 10 years ago  |  last reply 9 years ago


What is an easy and efficiant way to harvest static electricity? Answered

Question by Mr Cheeseo 10 years ago  |  last reply 10 years ago



I have a canning/jar question.....

I would like to make a huge batch of enchilada sauce to have on hand whenever I need it.  How can I store/can/jar this sauce to ensure it doesn't spoil? 

Question by zurichko 8 years ago  |  last reply 8 years ago


Fungus, where do you get the patches for the cookie jar?

You host these Cookie Jar events that are much loved by the community, partaking a few times myself. I just have to know though, where do the patches come from? I know the number you give out far exceeds the 45 you get free for going PRO, so do you buy extra just for us? Special rules for that sort of thing?

Topic by Bigev 9 years ago  |  last reply 9 years ago


Cookie Jar Caption Contest! UPDATE: winner announced

It's been a little while since we've had a caption contest and it's fun to give away cookie patches so why not do both at the same time!Why not indeed.So! Here's the deal. Submit a caption for the picture below from this thread and you could win a 3-D puzzle of the whole world!It goes like this: - Post a new comment with your caption - You can submit up to 3 captions - Each caption gets its own comment - Contest closes for entries at 4:30 pm PDT tomorrow (look at the timestamp on your comment) - Everyone who posts a caption gets a cookie patchOK now go!UPDATE: The winner is gibsly with the caption in the picture below. Thanks to everyone who entered with a caption! There were many other great captions there.Due to a minor emergency around delicious food being served somewhere else there will be a delay in the cookie patches being sent out, but they will be sent out.

Topic by fungus amungus 9 years ago  |  last reply 9 years ago


Can't find Instrucable: LED in a jar with a feather hanging, firefly effect from wind

OK, I'm trying to search for an Instructable but I can't find it anywhere! I thought I had favorited it, but I guess not. Here's the description: A simple circuit made from a watch battery and and LED. One of the leads is a srping, with a feather hanging from it,. so when the wind blows, it moves the spring, connects the circuit, and the LED glows, like a firefly. Throw the whole thing in a jar and hang it in a tree, tada! I'm pretty sure it was featured within the last month or so, as I found it through an RSS feed. Any help? Thanks so much!

Topic by toekneebullard 10 years ago  |  last reply 6 years ago


Does anybody have an idea of how I could fit an LED and battery into a very very small jar? Answered

The batteries are a tiny bit bigger than the inner circumference of the opening =( If you do, I will most definitely post an 'ible on how to make a very, very tiny light-up jar ;)

Question by thomasthetankengine 7 years ago  |  last reply 7 years ago


How do I repaint appliqued lettering on old glass Tom's cracker jar?

The paint on the lettering is old and can be scraped off. I do not want to remove the plastic-looking film beneath as this is my template for repainting.  But I do not want to risk "unsticking" this film during painting or anytime later.  Any suggestions appreciated.

Question by rachael44 4 years ago  |  last reply 4 years ago


Can someone give me a little more detailed instructions for making a simple firefly jar? Answered

I want to make this:  https://www.instructables.com/id/simplified-firefly-jar/?ALLSTEPS   but the instructions are quite vague for someone with little experience so could someone please help me make this great gift for my special lady friend? I'm new to soldering and electronics so I need a little better instructions for this project.  I have all the parts and supplies but can't figure out out to implement in the transistor and capacitor. 

Question by g3thig4chri5 9 years ago  |  last reply 9 years ago


salt water capacitor question? Answered

Would a pickle jar like this one be able to handle 10,000 volts if i turned it into a salt water capacitor and how can i calculate the capacitance of the jar

Question by MonstaM 8 years ago  |  last reply 8 years ago


will a green filter still collect sunlight? Answered

I'm trying to make a sun jar. I've got myself a flip-top jar. the garden light is still pending. but I have a problem (or do I?)- the lid is green. will the green glass still allow the solar panels to get power? or will I have to do something else?

Question by codongolev 9 years ago  |  last reply 9 years ago


How to make a lab vacuum chamber

I have just buit this vacuum bell jar system form several sizes and with electrical inputs: http://www.youtube.com/watch?v=O91eCB_GvwY

Topic by bubal 6 years ago  |  last reply 6 years ago


I want to make terrariums for my Christmas gifts this year but im not sure how to do it.

I want to make terrariums for my Christmas gifts this year but im not sure how to do it. i was thinking of using mason jars but im not sure of the right mix of things to put into them before closing them up. Has anyone ever done this before or have any thoughts on the right mix of dirt and moss and grass to place inside the jar?

Question by letsgodowntherabbithole 9 years ago  |  last reply 8 years ago


How do I open Minecraft.jar without any special programs?

I want to open Minecraft.jar so I can get the Texture.png file, but without any special programs. I went into the Properties of Minecraft.jar and changed it to a .zip. I opened it up as a .zip, but the Texture.png wasn't there. How do I get it?

Question by ~KnexBuild~ 5 years ago  |  last reply 5 years ago


Is it possible to use a leyden jar as powersource of coilgun?

Question by 10 years ago  |  last reply 9 years ago



Where is the recipe for pie in a jelly jar?

I can't find this recipe, but maybe I'm just not using the correct search words.

Question by davidsona 9 years ago  |  last reply 9 years ago


Other ways to charge a Leydon Jar?

I need to find a good easy working way to charge up a Leydon Jar with static electricity. I do not have (and cannot make) a van de graffe generator. I tried using my tv, but it doesn't work too well. Are there any other ways to charge a Leydon jar?

Question by freeza36 7 years ago  |  last reply 4 years ago


JAR - Jollex's (Knex) Assault Rifle

 This is a really powerful single shot assault rifle I made recently.  I was going to post instructions on ibles but the instructable maker thing kept screwing up so I'll just link you guys to the instructions on KI: knexinnovation.net/forums/viewtopic.php

Topic by jollex 9 years ago  |  last reply 6 years ago


Idea for extended version of "Sun Jar"

After seeing the recent Sun Jar I'ble, I had an idea (not even concrete enought to be a Completable) for an interestingly extended version. There now exist LEDs for infrared, visible red, green, and blue, and near UV.It should be possible, with a mix of small low-voltage constant-current power supplies and pulse modulators, to construct a multiple-LED light source which roughly models what we perceive as the solar "spectrum." I don't mean formally reproducing the raw wavelength distribution, but rather the combination of intensities we see (or measure with a thermometer) in a prism- or grating-spread spectral display.Coupling such a circuit to a solar cell would allow you to build a "Sun Jar" which "collects sunlight" during the day and "releases sunlight" at night. As I said, just an idea...

Topic by kelseymh 10 years ago  |  last reply 10 years ago


What can i make with empty babyfood jars? Answered

Please help me thinkof some fun challenging and creative projects for using my empty babyfood jars

Question by mrs.bickford 7 years ago  |  last reply 7 years ago


Would I be able to charge a leyden jar with a electric fly swatter?

 

Question by WerdnaN 9 years ago  |  last reply 9 years ago




Where to find/make/buy widemouth black Ball jar lids?

I'm in need of at least 50-120 black widemouth Ball jar lids.  I can't find these items anywhere for a reasonable price. I already have the jars but the lids are gold and come in two pieces.  Can anyone assist me in finding black widemouth lids or tell me how to make them so the paint will not chip off when re-opening the jar? I'm from Muncie, IN where the Ball Brothers made their money with the ball jar and need these for a local company making lotion.  We would like to package the lotion in the jars. Thanks, Sara

Question by slynn4colts 4 years ago  |  last reply 4 years ago


for a jam jar pulse jet what percentage dopes the methylated spirits have to be?

. I've ordered some at 10% is this enough?

Question by jibatsu 8 years ago  |  last reply 8 years ago