- Zinc copper cell (reduction-oxidation)
- How to measure?
- Battery meter (galvanometer)
- How Many Turns?
- Electrolyte test (pure water vs. vinegar)
- Reverse electrodes (polarity)
- Electrolyte (strong acid test)
- Electrolyte (salt test)
- Electrode (distance test)
- Electrolyte (temperature test)
- Electrode (surface area test)
- Standard cell
- How much electrolyte does a single cell need?
- The battery and electromagnetism
Testing out a cell which holds the metals at a constant distance. We add it to salt water and then check the deflection. Can this be used as a standard unit? Created by Brit Cruise.
Want to join the conversation?
- Why did the needle seem to be shaking kinda rapidly once he tapped it?(8 votes)
- any gauge with a needle will shake if you tap it with some really cheap ones the needle will get caught on the top.(2 votes)
- Is the spacing between metals necessary? Since deflection decreases with increased distance, why not just touch the two coins together?(6 votes)
- I assume that the electrolyte has some resistance, so that's why current increases with decreased distance: less electrolyte resistance to get in the way. If the two coins touched, would there be current loops between the coins, since this would be the path of least resistance?
This is a fantastic series of videos, by the way!(8 votes)
- was that slat he put on the spoon why(2 votes)
- Yes, that was salt on the spoon. In the 'Electrolyte (salt test)' video you will see that adding salt to the vinegar makes it a better conductor.
- So the ideal battery would be one that has discs of large surface area close to one another dipped in a strong, hot, salty acid?(2 votes)
- I think the author needs to talk to clarify any questions that we might have. Any answers to what a standard cell really is?(2 votes)
- Would not the hot liquid melt the rubber band?(1 vote)
- Can we use anything besides coins?(1 vote)
(shuffling) (coin clattering) (sighing) (water splashing) (thuds) (tapping) (taps)