Hmm... Add more sanded pennies and salted boards?

If you add more sanded pennies, it won't become better unless you do the pattern correctly, that way you can have more cells which result in better/more voltage.

can you add more and more until it can charge a ipod?

yes, I think you can. I've seen a fruit battery charge an ipod, so i think penny batteries work too

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Course: Exploratorium > Unit 3

Lesson 2: Penny Battery

Challenge: Design a more powerful battery

Name: Challenge: Design a more powerful battery
Uploaded: 2014-01-21T02:24:15Z
Description: So now you know how to light a red LED. What about a blue one? Hint: a blue LED requires more power.

Google Classroom

So now you know how to light a red LED. What about a blue one? Hint: a blue LED requires more power. Created by Exploratorium.

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The #5 Canvas Size & #1 ChangeWinstonHunters & #1 Ternary Proponent(FrozenFreak1)
Posted 10 years ago. Direct link to The #5 Canvas Size & #1 ChangeWinstonHunters & #1 Ternary Proponent(FrozenFreak1)'s post “Hmm... Add more sanded pe...”
Hmm... Add more sanded pennies and salted boards?
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(6 votes)
Answer
- ehuang
  Posted 10 years ago. Direct link to ehuang's post “If you add more sanded pe...”
  If you add more sanded pennies, it won't become better unless you do the pattern correctly, that way you can have more cells which result in better/more voltage.
  Comment on ehuang's post “If you add more sanded pe...”
  (4 votes)
Blake Parsons (Quest to 10,000,000... 75% complete!!!)
Posted 10 years ago. Direct link to Blake Parsons (Quest to 10,000,000... 75% complete!!!)'s post “can you add more and more...”
can you add more and more until it can charge a ipod?
Button navigates to signup pageComment on Blake Parsons (Quest to 10,000,000... 75% complete!!!)'s post “can you add more and more...”
(3 votes)
Answer
- ehuang
  Posted 10 years ago. Direct link to ehuang's post “yes, I think you can. I'v...”
  yes, I think you can. I've seen a fruit battery charge an ipod, so i think penny batteries work too
  Comment on ehuang's post “yes, I think you can. I'v...”
  (2 votes)
eribash
Posted 8 years ago. Direct link to eribash's post “Why blue not red aren't t...”
Why blue not red aren't the the same LED but not color
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(2 votes)
Answer
- Sarahvillettaz
  Posted 8 years ago. Direct link to Sarahvillettaz's post “What do you really mean b...”
  What do you really mean by "Why blue not red aren't the same LED but not color" Do you mean Why blue have no same LED and color with red?
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  (1 vote)
Janice
Posted 7 years ago. Direct link to Janice's post “Do you add much bigger pe...”
Do you add much bigger pennies (25 cents) and add the salted boards and sanded pennies but this time add way more salt and vinegar?
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(2 votes)
Answer
Chicamanic132
Posted 7 years ago. Direct link to Chicamanic132's post “i love this and am gonna ...”
i love this and am gonna try it at home
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(1 vote)
Answer
Chicamanic132
Posted 7 years ago. Direct link to Chicamanic132's post “6 cells to light up the b...”
6 cells to light up the blue LED light! #genius
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(1 vote)
Answer
Jason A Wong
Posted 9 years ago. Direct link to Jason A Wong's post “What does the penny have ...”
What does the penny have inside to make power?
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(1 vote)
Answer
jackkowalski
Posted 8 years ago. Direct link to jackkowalski's post “A 6 cell generates 3 volt...”
A 6 cell generates 3 volts. What would that be in metric?
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(1 vote)
Answer
Sharo
Posted 9 years ago. Direct link to Sharo's post “What is the most powerful...”
What is the most powerful battery you could possibly make?
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(1 vote)
Answer
Sarahvillettaz
Posted 8 years ago. Direct link to Sarahvillettaz's post “I think that, well i did ...”
I think that, well i did it myself but you should use 6 sanded pennies and just one intac penny on top and in between 6 soaked map boards.
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(1 vote)
Answer
- Stairway
  Posted 8 years ago. Direct link to Stairway's post “Copper pennies or zinc pe...”
  Copper pennies or zinc pennies?
  All pennies made after 1979 are only copper on the outside
  Comment on Stairway's post “Copper pennies or zinc pe...”
  (1 vote)

Video transcript

- [Voiceover] My penny battery is powerful enough to light a red LED, but I have a blue LED here. And when I attach it, it doesn't light up. Can you design a penny battery that's powerful enough to light a blue LED? Here's a hint. Blue light is a higher frequency than red light and so requires more energy. In the next video, I'll show you the solution I came up with.