Manual
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59. Angular Light Intensity
Build the circuit, move the magnet (7) towards the reed switch (83), and you will see the LED
(69) and the bi-directional LED (71) turn on red. Move the magnet (7) away and install the bi-
directional LED (71) in the reverse direction. Move the magnet (7) towards the reed switch (83)
and you will see the LED (69) turn on red and the bi-directional LED (71) turn on blue.
While it may appear that the bi-directional LED (71) is brighter than the heart LED (69), this is
because LEDs have angular light intensity proles such that a majority of the light emits straight
out of the top of the LED. If you look from the side at the bi-directional LED (71) you will see it
looks very dim, just like looking at the side of the heart LED (69).
Red Light
Blue Light