Littlebits KIT-12975, Руководство пользователя

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yO
u
’l
l
N
EEd
CD w� te
paper
wire bright led
turn me on
A sPEcTRuM is a range
of electromagnetic
waves in order of
their wavelength. You
can always remember
the order by thinking
of “ROY G BIV.” From
longest to shortest –
Red, Orange, Yellow,
Green, Blue, Indigo,
Violet.
As white light bends, each color in the
spectrum bends at a slightly different
angle because their wavelengths are
different sizes. Shorter wavelengths will
bend more and longer
wavelengths will bend
less.
Why does a CD behave
like a prism? They both
act as “diffraction
grating.” The grooves
on a CD diffract light
into several beams
like you saw in this
experiment!
Make this circuit.
make a spectrum
PROJECT 3:
Explore light waves you can see.
TimE:
15 mins
diFFiCulTy:
Find a dark place and set the
refl ective side of the CD opposite
a white wall or piece of paper.
Place a bright LED in between the
CD and the wall (or paper).
power
MAKE A SPECTRUM!
Ho� man y colors can you � nd�
1 2
3
4
15
wH
y’d
iT
dO
TH
a
T?
refer back to
Electromagnetic
Energy on p.11