00:00:00
STEVE SPANGLER: So I bet you
think this is the part of the
00:00:01
show where I'm going to
say, don't try these
00:00:03
experiments at home.
00:00:04
And you're right.
00:00:05
Except there is one experiment
we want you to try.
00:00:08
Just look for the graphic
that's right here
00:00:09
that says try it.
00:00:10
That's your signal that
you can try that
00:00:12
experiment at home.
00:00:13
Everything else, off limits.
00:00:15
I've already given you homework,
and the show hasn't
00:00:26
STEVE SPANGLER: I'm fascinated
with Newton's cradle.
00:00:29
But then, again, I'm
easily amused.
00:00:32
It's the coolest demonstration
toy because it teaches the
00:00:36
laws of conservation
of momentum and the
00:00:39
conservation of energy.
00:00:42
Pendulums are just cool.
00:00:44
As much as we'd like to think
that Isaac Newton sat around
00:00:46
and played with this toy, it
was actually invented by an
00:00:48
English actor by the name of
Simon Prebble in 1967.
00:00:53
He named it after Newton
because it demonstrates
00:00:56
Newton's laws of motion.
00:00:58
What I'm really looking
for is, instead
00:01:00
of making it bigger--
00:01:02
that seems to be what everybody
wants to do
00:01:03
nowadays, is to do
it with something
00:01:05
that's bigger and bigger.
00:01:06
I remember, years ago, there was
a science experiment in a
00:01:11
book called, Scientific
Amusements that talked about
00:01:14
the swing and the transfer of
energy from a pendulum.
00:01:18
It almost looked like
mind control.
00:01:21
That's what I think I want to
do is to mess with people in
00:01:24
our office today and see if I
can convince them that I can
00:01:26
control or they can control an
object with just their mind.
00:01:30
When in fact, it's all cleverly
disguised here in the
00:01:34
swing of a pendulum.
00:01:36
For now, I'm going to keep
playing with this.
00:01:42
STEVE SPANGLER: You know, they
say the old is forever new.
00:01:45
And it's absolutely right.
00:01:46
If you want inspiration,
you turn to some
00:01:47
of these old books.
00:01:49
This is Scientific Amusements,
about 1870 or so, adapted from
00:01:54
Professor CG Knott.
00:01:56
What I'm looking at here is, as
you're thumbing through it,
00:01:58
there are all these
old materials.
00:02:00
But I remember this thing called
a coupled pendulum.
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