August 2021
Beginner
128 pages
5h 36m
English
Content preview from Make: Volume 78
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PROJECTS Amateur Scientist / 1+2+3 Virtual Half-Pipe
cell inside an open box or oatmeal container to
block direct sunlight.
Figure
H
shows how the photophone is used.
For initial tests, use masking tape to attach the
open end of your photophone transmitter over the
speaker of a battery-powered radio. Ask a friend
to wear sunglasses and a reflective safety vest
and stand or sit in a shaded spot while holding
the receiver’s detector facing a sunny spot around
50 feet away. Walk to the sunny spot, turn on
the transmitter’s radio and shine reflected
sunlight toward your friend until you see the
safety reflectors brighten. Your friend should then ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.