Franklin's Bell - How it Works
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- Опубликовано: 3 окт 2024
- How Franklin's Bell works, both Benjamin Franklin's original setup for detecting lightning storms and a simple homemade one using soda cans. For Franklin's original, the use of a lightning rod and ground connection is shown. For a simple homemade one and Wimshurst machine is used to power the bells, though a Van de Graaff machine and electrophorus are also shown briefly.
For how to make a Franklin's Bell and more detailed demonstrations, watch:
• Franklin's Bells - How...
For my webpage about Franklin's Bell see:
rimstar.org/sci...
For how to make a Faraday motor and a demonstration and explanation of how it works, watch:
• Faraday Motor How to M...
For how to make a Joule Thief to run an LED on dead batteries, watch:
• Make a Joule Thief for...
3D models and animation done using Blender 2.63.
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Great video Steve! I'm really impressed by your animations! Great stuff, and wonderful explanations!
Rest in Peace, Grant. Keep doing your crazy experiments up there :)
only 9 likes on a 12 mil sub channel
Thanks Grant! The animations are half the fun making and good explanations are the other half!
Thanks! I appreciate the feedback. Glad you enjoyed it.
Glad to hear it! Thanks for the feedback.
Great video..very clear now how the electrons interact with the ball. Right, off to get a couple of cans and a drinking straw, you always spark some sort of idea !
Oh! And now I can't wait to see what idea I sparked, because your ideas are always very cool!
Thanks! They're both plenty of fun to make.
An electric field is stronger at a sharp point. That makes it collect electrons from ions more easily than a blunt surface, making them no longer ions, i.e. deionizing them. Lightning follows the path of least resistance and ionized air is a better conductor than air without ions. When using it as a lightning rod the idea is to deionize the air so that lightning doesn't follow a path to the lightning rod. With the bells, the circuit makes use of the electrons from those deionized air molecules.
Do you mean with the Wimshurst machine (the one with the rotating disks)? I didn't know in that case. It could have been either way, but since it didn't affect the explanation I didn't check to see. If you do want to find out then I show how in my "Positive or Negative? How to Find Electric Charge Polarity" video. You can find it on my channel page in the Browse videos tab.
I once removed the grease from a bearing and replaced it with MG Chemicals' brand of carbon conductive grease. But when I put the bearing back together I guess the seal wasn't perfect, that or the high RPM of around 8400RPM was too much for it and some of the grease came out over time. That was my only experience with conductive grease. I'm sure I could have done better had I pursued it further. If you're curious, it's on the Conductive Bearings page in the Equipment section of my website.
I remember always watching those Franklin’s bell videos during elementary school
Thanks! They're fun to make.
I've never tried it so I don't know if it'll work. I'll probably try it this summer, but we don't get a lot of storms here in the city. The sharper the nail point the better it should work, and I suspect the higher up it is or at least far from anything else the better it'll work. It should require storm clouds but bring the nail indoors in if there's chance of lightning! And let us know how it goes.
Glad to hear it. Thanks!
Yes and no. Blender has a steep learning curve. I could have done the house and bells in this one with stop motion but the way I do stop motion wouldn't have produced such a polished looking result. There is good stop motion software out there but I don't have any. My way of doing stop motion is a bit of a hack.
My pleasure.
Thanks! My blender work is nowhere as good as yours since I don't have the time, but I try.
I use Blender 2.63 for the 3D stuff, and OpenOffice Draw for the 2D overlays of things like moving charges. See my video "Behind the Scenes at RimstarOrg as Thx for 1 Million Views" where all is revealed.
I don't know if it's the best for your purposes or even if it was for my purposes. It was just what the local electronics store had in stock back then. Random.
Thanks man!
Nice video of franklin's Bellnice way to teach the working.
Once again....excellent explanation...thanks
Sounds like you have some experimenting ahead of you. Make sure to do a video of the results.
Remember me when you do, oh great leader... :D
OK found some stuff including Carbon Silicone and silver silicone grease.
Be fun to experiment with different ones to measure and compare the Resistance of each put in a 1" line. including some of the home made ones I mentioned.
Another Idea would be to impregnate Silicone caulk with carbon or graphite. So one could make a structured circuit line on a PC board that would cure and be pliable unlike the silver conductive paint pens. Sorry for going off subject on your post.
Just keep in mind that have protection from lightning strikes! Maybe don't run it through your house like in my animations.
It seems that in the case of an actual lightning strike, Franklin's version would be a direct line to a bad day. Why the sharp point on the lightning rod?
I've never heard of carbon conductive grease. I check that out , Thanks.
i much enjoy youre videos! Thank you very much.
I made this for kicks, but glued the straw on, sanded the sides of each can and then taped the wires on. I put one wire from the non-taped straw can out the window tied to a nail, and the other wire to the ground in the house. Will this still work? I used magnet wire from transformer.
Seems faster than trying to make stop motion of a demonstration. (I am trying to make a video on my design for a small van de graaff generator.)
awesome man! you put alot into these vids too
Great work. ✔️💯🏆
Thanks so much for sharing. 😉👌🏼
While walking my dog I thought of a good assignment you may wish to try. For years I've been looking for a conductive grease for electoral connectors on my auto and Motorcycles. I'm Familiar with dielectric grease witch is designed for this purpose neither conductive or not. But I want a grease that is. I've thought about using a silver circuit board tracer but that would glue the connectors. I've lately learned that printer ink is conductive I'm thinking mixing that or graphite with vaseline.
Now you can put a voltmeter there instead and measure atmospheric charge over time
You have some cool "how to " videos!
Can I use a regular AA battery or does it have to be static electricity
It has to be high voltage, in the thousands. AA batteries are far too low voltage.
Even before me! :)
how did you know that the can have a positive charge
Same here. I am using kdenlive (free Ubuntu nonlinear video editing software) and kolourpaint (similar to MS paint from windows vista) to make the stop motion and currently it has over 100 frames I had to make using the paint software. (yes it took a-little while :-) )
1:31 if the ball repels, does that mean it has more electrons than protons?
Yes, there are more electrons than there are electrons on the ball at 1:31. That makes the ball negatively charged -- the electrons are negative and the protons are positive. The nearest bell is also negatively charged. Since they're both charged the same way, they repel each other. That's another way of saying that like-charged objects repel each other.
If they were both positively charged, more positive protons than negative electrons, then they'd also be like-charged, they'd also repel each other. That happens at 1:50.
how do you make the animations?
_The ball swings away..._
what he said
Ha Ha ha....... Now I have the final bit of technology I needed to complete my uranium 238 capsule. And Take over the world................Ha Ha Ha "cough"
This guy thinks like me ..........Together we will take over the world.........
You should use 2 piezoelectric crystals and get some electricity from it to see it that would work.
xwsx001 Oh, neat idea! I'm not sure it the high voltage would affect the piezo crystals themselves, but it would be neat.
how do u know his name lol, u friends???
i watched first :D
Really? Franklin used a Coke can? Sorry, just couldn't resist. Loved the experiment!
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