Manual

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27. Fun Facts About Fiber Optics
Build the circuit, press the switch (62), then hold the press
switch (61). Move the magnet (7) towards the reed switch
(83). The colorful LED (72) will turn on. The ber optic tree
(40) will light up with the colors of the LED. If you move the
magnet (7) away, the light will turn off. Did you know that
ber optics is one of the fastest methods to deliver high
speed Internet? Fiber has been shown to deliver data at
Terabyte speeds (that’s 1000s of Gigabytes!).
28. Red and Blue Light
Build the circuit, press the switch (62), then press the
press switch (61). Move the magnet (7) towards the reed
switch (83); you will see the bi-directional LED (71) turn on
with the blue light. If you move the magnet (7) away, the
bi-directional LED (71) will turn off. Install the bi-directional
LED (71) in the reverse direction and move the magnet
(7) towards the reed switch (83). The bi-directional
LED (71) will turn red. LEDs produce different colors by
transmitting light waves with different wavelengths. Light
waves cycle up and down and a wavelength is the distance
between successive crests of the wave. Red light has a
wavelength of around 665 nanometers, while blue light
has a wavelength of around 470 nanometers.
Red Light
Blue Light