Branch Education | How to Make Lemon Batteries! @BranchEducation | Uploaded 5 years ago | Updated 3 hours ago
Got some lemons? Let's make a lemon battery! With just a few household items, you can generate electricity and light an LED. Join in this hands-on activity to learn about electricity. It is great for all ages and cheap to build. You need 3x lemons, copper pennies, galvanized nails, copper wire, and an LED to light up.
Do you want to support in-depth engineering and technology education? Support us on: https://www.patreon.com/brancheducation
Website: https://www.branch.education
On Facebook: https://www.facebook.com/BranchEducation/
On Twitter: https://twitter.com/TeddyTablante
On Insta: https://www.instagram.com/brancheducation/
Or Join us on YouTube Memberships: https://www.youtube.com/channel/UCdp4_l1vPmpN-gDbUwhaRUQ/join
Twitter: @teddytablante
Made by Teddy Tablante
Table of Contents:
00:35 Section 1: Lemon Battery Build Steps
04:10 Outro: Questions & Branches
FAQ, Tips & Issues building the Lemon Battery:
Top reasons why it doesn't light up an LED:
1) Your coins really should be made of 100% copper, meaning they should be minted before 1982. Coins minted after 1982 are copper plated zinc (2.5% copper, 97.5% zinc). I have had success with these current coins, however very unreliable success.
2) The copper pennies should be clean. Use steel wool or a brillo pad, or the rough side of a sponge and some vinegar to clean them.
ALTERNATIVELY: You can just use a good amount of copper wire inside the lemon instead of the copper pennies, but if you aren't using enough copper wire, your lemon battery won't generate enough current.
3) Your LED legs are facing the wrong direction.
4) Inside the lemon the copper pennies and zinc nails are touching.
5) The connection from copper wire to zinc nails isn't good.
Background Understanding: Lemons & Activities
Key Branches from this video are: Exploring Lemon Batteries, Voltage & Current, Li-Ion Batteries, Understanding Electricity
Erratum:
Animation built using Blender 2.79b https://www.blender.org/
Post with Adobe Premiere Pro and Adobe After Effects
Sound editing with Reaper
Work Cited:
Goodisman, Jerry (2001). "Observations on Lemon Cells". Journal of Chemical Education. 78 (4): 516–518
"Lemon Battery". Pembroke, Ontario: Hila Science Camp.
Wikipedia contributors. "Lemon Batteries." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, March 3rd, 2019.
Music Attribution in Order:
Easy Lemon by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200076
Artist: http://incompetech.com/
Away by Geographer from YouTube Audio Library
Lightning Bugs by Geographer from YouTube Audio Library
Water Lillies by Density & Time from YouTube Audio Library
Wind Marching For Rain by Puddle of Infinity from YouTube Audio Library
Got some lemons? Let's make a lemon battery! With just a few household items, you can generate electricity and light an LED. Join in this hands-on activity to learn about electricity. It is great for all ages and cheap to build. You need 3x lemons, copper pennies, galvanized nails, copper wire, and an LED to light up.
Do you want to support in-depth engineering and technology education? Support us on: https://www.patreon.com/brancheducation
Website: https://www.branch.education
On Facebook: https://www.facebook.com/BranchEducation/
On Twitter: https://twitter.com/TeddyTablante
On Insta: https://www.instagram.com/brancheducation/
Or Join us on YouTube Memberships: https://www.youtube.com/channel/UCdp4_l1vPmpN-gDbUwhaRUQ/join
Twitter: @teddytablante
Made by Teddy Tablante
Table of Contents:
00:35 Section 1: Lemon Battery Build Steps
04:10 Outro: Questions & Branches
FAQ, Tips & Issues building the Lemon Battery:
Top reasons why it doesn't light up an LED:
1) Your coins really should be made of 100% copper, meaning they should be minted before 1982. Coins minted after 1982 are copper plated zinc (2.5% copper, 97.5% zinc). I have had success with these current coins, however very unreliable success.
2) The copper pennies should be clean. Use steel wool or a brillo pad, or the rough side of a sponge and some vinegar to clean them.
ALTERNATIVELY: You can just use a good amount of copper wire inside the lemon instead of the copper pennies, but if you aren't using enough copper wire, your lemon battery won't generate enough current.
3) Your LED legs are facing the wrong direction.
4) Inside the lemon the copper pennies and zinc nails are touching.
5) The connection from copper wire to zinc nails isn't good.
Background Understanding: Lemons & Activities
Key Branches from this video are: Exploring Lemon Batteries, Voltage & Current, Li-Ion Batteries, Understanding Electricity
Erratum:
Animation built using Blender 2.79b https://www.blender.org/
Post with Adobe Premiere Pro and Adobe After Effects
Sound editing with Reaper
Work Cited:
Goodisman, Jerry (2001). "Observations on Lemon Cells". Journal of Chemical Education. 78 (4): 516–518
"Lemon Battery". Pembroke, Ontario: Hila Science Camp.
Wikipedia contributors. "Lemon Batteries." Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, March 3rd, 2019.
Music Attribution in Order:
Easy Lemon by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/)
Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1200076
Artist: http://incompetech.com/
Away by Geographer from YouTube Audio Library
Lightning Bugs by Geographer from YouTube Audio Library
Water Lillies by Density & Time from YouTube Audio Library
Wind Marching For Rain by Puddle of Infinity from YouTube Audio Library
![How are Images Compressed? [46MB ↘↘ 4.07MB] JPEG In Depth](https://i.ytimg.com/vi/Kv1Hiv3ox8I/hqdefault.jpg "How are Images Compressed? [46MB ↘↘ 4.07MB] JPEG In Depth
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Youve probably saved 1000s of JPEG images, but do you know what exactly JPEG does? Our smartphones and cameras save images in JPEG format, furthermore, the majority of images you see on the internet are saved using JPEG compression. This format is everywhere, but do you know exactly how it works? Well in this video were going to explore the JPEG compression format. This is a rather complicated video, so it may take watching it a few times through to understand it all.
Do you want to support in-depth engineering and technology education? Support us on: https://www.patreon.com/brancheducation
Website: https://www.branch.education
On Facebook: https://www.facebook.com/BranchEducation/
On Twitter: https://twitter.com/TeddyTablante
On Insta: https://www.instagram.com/brancheducation/
Or Join us on YouTube Memberships: https://www.youtube.com/channel/UCdp4_l1vPmpN-gDbUwhaRUQ/join
Script, Modeling, Animation: Teddy Tablante
Twitter: @teddytablante
Voice Over- Phil Lee
Nature Photography- Tobias Karlsson
Table of Contents:
00:00 - Intro into JPEG
01:24 - What does JPEG do?
02:35 - What are the Steps of JPEG?
04:06 - Color Space Conversion
06:06 - Discrete Cosine Transform
09:32 - Quantization
11:02- Run Length and Huffman Encoding
12:04 - H.264 Video Compression
13:25 - Rebuilding an Image
15:01 - Notes and Caveats on JPEG
17:06 - Sponsored by Brilliant
18:20 - Outro
Key Branches from this video are: How does a Camera Work? How do SSDs Work?
Erratum:
Tulips are not the same as Lillies.
Animation built using Blender 3.0.0 https://www.blender.org/
Post with Adobe Premiere Pro
References:
A Trip Through the Graphics Pipeline 2011: Index
https://fgiesen.wordpress.com/2011/07/09/a-trip-through-the-graphics-pipeline-2011-index/
DCT (Discrete Cosine Transform)
https://asecuritysite.com/comms/dct2
H.264 is Magic
https://sidbala.com/h-264-is-magic/
How JPEG Works
https://cgjennings.ca/articles/jpeg-compression/
Jack, Keith. Video Demystified. Fifth Edition. Elsevier 2007.
JPEG 101 - How does JPEG Work?
https://arjunsreedharan.org/post/146070390717/jpeg-101-how-does-jpeg-work
JPEG: Image Compression Algorithm
http://pi.math.cornell.edu/~web6140/TopTenAlgorithms/JPEG.html
What is H.264?
https://www.streamingmedia.com/Articles/Editorial/What-Is-.../What-Is-H.264-74735.aspx?utm_source=related_articles&utm_medium=gutenberg&utm_campaign=editors_selection
Wikipedia contributors. Chroma Subsampling, Chrominance, Chroma Subsampling, Discrete Cosine Transform, , JPEG ,
Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, Visited December, 2021
Music Credits
Kindred
#JPEG #Camera #Picture")
