Posts Tagged ‘science channel’

Tape Measure

October 2, 2018

How does a retracting tape measure work? The Science Channel explains. From Machines: How They Work.

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Short link: http://wp.me/p6sb6-pmI

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ATMs

October 24, 2017

After you insert your bank card and enter your PIN, how does the ATM know how to give you the right number of bills?

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Short link: http://wp.me/p6sb6-nLD

Comments are welcome if they are on-topic, substantive, concise, and not boring or obscene. Comments may be edited for clarity and length.

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