Enigma Machine
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#1
Report Thread starter 6 years ago
#1
When I say, I mean small, like the size of an atom, elementary charge, etc

We can use:
A 1 metre rule
A balance with precision of 0.1g
A measuring beaker with a precision of 0.1ml
A stop watch with a precision of 0.01s
A voltmeter with precision of 0.01V
An ammeter with a precision of 0.01A
A thermometer with a precision of 0.5K

We can also use any other equipment that doesn't have a scale on it.
We don't necessarily have to measure a physical size; it can be the timing of an event, an electronic charge or any fundamental constants such as Planck's constant, G etc.

We were shown how to measure the size of an atom using an oil droplet and water which I thought, was amazing. Does anyone have any ideas on how we could measure a really small quantity?
Any help will be appreciated and repped
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Joinedup
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#2
Report 6 years ago
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planck's constant with different colour LEDs

diameter of a human hair by counting interference fringes between 'wedged' microscope slides
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