9
You now have one
loop with two full
twists. You didn’t
expect that, did you?4
M
A
G
IC
What happens when you
cut a normal loop in half?A normal loop has two edges
(colored red and blue here).
When you cut down the middle,
you separate the edges to form two
pieces. But try to color the edges of
the Möbius loop and you’ll see that
there’s only one! The twist you added
at the beginning joins the end of one
NORMAL LOOP edge to the beginning of the other.MATH
PART...
THE
LOOPY DOUBLE-LOOP
Make two normal loops (without the twist) and
glue them together as shown in the picture. Now
cut both of them around their middles. The result
is really surprising. Try to predict what shape it
will turn into before you start to cut!NOW TRY THIS
...G
ET
S^ B
IG
GE
R!
TH
E
L
O
O
P(^) J
U
S
T
...
Single edge
on the loop
M
ÖB
IU
S^ L
OOP
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