3B SCIENTIFIC PHYSICS 1009950 Manual De Instrucciones página 14

6.11 Transmission of information

Set up the transmitter and receiver facing
one another.

With the receiver off the rail, move it in a
plane perpendicular to the rail.

Reception is best when the openings are
facing one another.
Using internal modulation (3 kHz signal) or
external modulation (e.g. sound from an MP3
player) it is possible to transmit information.
Conclusion: microwaves (electro-magnetic
waves) can carry information.
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