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Potato battery science fair project

If "The Scientific Method"listed in a grade school textbook proves that Astronomy is not a science, then it's the textbook which is wrong, not Astronomy.

- Sir Peter Medawar
There are many parts of science that cannot easily be forced into the moldof "hypothesis-experiment-conclusion." Astronomy is not an experimentalscience, and Paleontologists don't perform Paleontology experiments...

Newton and the reflecting telescope) ...that's certainly "doing science." Humphrey Davy says "Nothing tends so much to the advancement of knowledge as the application of a new instrument." But where is 'The Hypothesis?' Where is 'The Experiment?' The Atomic Force Microscope (STM/AFM) revolutionized science.

A Battery That Makes Cents - Science Buddies

Science Experiments Using a Potato as a Battery - …

Battery Science Project: Investigate how to make a simple battery out of coins.

Real scientists use a large varietyof methods (perhaps call them methods of science rather than "TheScientific Method.") Hypothesis / experiment / conclusion is one ofthese, and it's very important in experimental science such as physicsand chemistry, but it's certainly not the only method.

Isaac Asimov said it well:

"The most exciting phrase to hearin science, the one that heralds new discoveries, is not 'Eureka!' (Ifound it!) but 'That's funny...' "
This suggests that lots of important science comes NOT from proposing hypotheses or even from performing experiments, but instead comes from unguided observation and curiosity-driven exploration: from sniffing about while learning to see what nobody else can see.

Potato Battery | Physics or Astronomy Science Fair Project

(Analog multimeter gets its power from our potato to show the voltage, but digital Multimeter gets its power from an internal battery and does not consume any of the electricity produced by our potato, that is why it shows a larger and more accurate value).
We repeated this experiment with some other fruits and all resulted almost the same.

You can even use this trick to let your lemon battery runa low-voltage buzzer or turn a small motor (look for "solar cellmotors" from various mail order suppliers or Radio Shack.) As with the bulb, you mustcharge up the capacitor for many minutes, then use it to run your bulb ormotor for a few seconds.
It's not an ideal experiment, and it's hard to explain how work.

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Potato Battery Experiment Hypothesis - CALS Web …

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