Episode Transcript
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Speaker 1 (00:00):
Welcome to Stuff You Missed in History Class from how
Stuff Works dot com. Hello and welcome to the podcast.
I'm editor Candice Keener, joined as always by staff writer
Jane McGrath. Hey, Jane, you didn't have to salute me,
but thank you very nice. I'm just fixing my hair,
(00:24):
my mistakes and mixed messages. So we get a lot
of emails asking questions about early American history and different
parts of European history, and you guys are also seemingly
really curious about people of the past. And we actually
had this great classic, no pun intended, article on Archimedes
that had been languishing in our que for a while,
(00:45):
so we thought it was time to talk about one
of the most legendary weapons of warfare and all of
the ancient world. So we have this great article in
the cycle. What was our comedies Death Ring by Collague
Josh Clark to give you some background or comedies, lived
in about the third century BC in Syracuse, and this
was basically modern day Sicily. It was a part of
modern day Sicily, but it was a part of the Greece.
(01:07):
It was under attack during his life by the Romans.
So just to give you guys sort of a visual
map of where Syracuse was. If you visualize Italy's boot,
you all pretty much know where Rome is. And a
little stone that the Buddhists kicking, well, that's about where
Syracuse wise. And at the other end of that stone
was the northernmost tip of Africa, and that's where the
(01:28):
ancient city of Carthage wise. And so we see an
ancient world that there was this huge conflict in which
Syracuse was embroiled, and it was sort of the monkey
in the middle between Carthage and Rome. And Egypt is
important as well. I know you and Josh did a
podcast before my time about Egypt's influence on Greek thinkers
and Archimedes, like many of his great thinkers, great Greek
(01:51):
thinkers of the time, traveled to Egypt and did a
lot of studying there, and that's where he learned a
lot of things to make him the brilliant mathematician inventor
that he became. He was most known for determining about
the approximate value of pie, as well as the fact
that the service area of the sphere is about four
times exactly the four times the area of the circle
that passes through the center of the sphere and things
(02:12):
like this. And in addition to all these things, he
made a lot of war machines. But he was actually
he was most proud of his geometric theories. And he
was interesting is that he requested it on his tomb
that it feature a cylinder object with a sphere and side,
so you can see how proud he was of his
geometric And here is sort of one of those incredibly
dumb geniuses. And I say that not to be rude,
(02:35):
but because he was often so absorbed in what he
was doing, whether it was calculus or some sort of
geometric theorem or something with the principle of hydrostatics, that
he would become so involved in his task at hand
that he would forget that his public behavior was seen
as a little bit ludicrous. Supposedly, when he discovered the
principle of hydrostatics, he was getting into the bathtub. And
(02:57):
basically what that principle says is that the amount of
water and object displaces it is equal to the weight
of that object in the water. Does that make sense. Yeah.
What he was trying to do at that point was
he was good friends with the king King Huron and
he had a wreath crown made of gold, but he's
the king suspected that it wasn't pure gold, but it
(03:19):
had some silver impurities, and he asked Archimedes to find
a way to figure out is this pure gold or not?
And this, uh, the displacement of water as you thought
we're talking about. Was he finally figured it out when
he got in the bath. Yeah, so that would have
been important to know the differences between the weight of
gold versus the weight of silver. So he would have
solved the king's dilemma, and he would have solved an
important dilemma of physical properties. And as legend go, as
(03:42):
when he discovered it, he said eureka, and he ran
down the straight black naked. So yeah, that's a curious
story as well, because there's another story that I hadn't
heard when I was researching for this podcast about his
bathing habits um was that Plutarch wrote that Archimedes was
so obsessed with math and geometry that his servants had
to force him to take bead this, and then even
(04:03):
while they were scribbing him down, he was writing geometric
figures on himself and on the walls and stuff like that.
It was it was bizarre and brilliant child in a way. Gosh,
these mad geniuses, Well we degrass a little bit, but
not really, because it's all part and partial to understanding
the genius behind Archimedes. And in addition to his mathematical discoveries,
(04:24):
he's also known for perfecting the lever, as well as
a device called compound polly and a hydraulic screw. So
he was able to use all these different types of
simple tools to um essentially build complex but relatively simple
war machines, like, for instance, he used the principles of
(04:44):
a lever to construct a claw that could reach outside
the walls that bound Syracuse and actually pick up Roman
ships and destroy them. And he famously once said, give
me a lever long enough and a place to stand,
and I will move the world. And he wasn't just
talking out of his other end. He really meant that
he could use these very complex theorems develop practical wartime
(05:07):
devices that the city of Syracuse could use. Yeah, and
historians like to point out that it's hard to distinguish
fact from fiction in his life, like the stories we
told you about the Eureka and the Bass story and
the quotes that he said that people remember they might
not have been true. Historians usually dismiss them. But some
things about his inventions and his life are really hard
(05:29):
to distinguish, even for historians. And that is especially true
when it comes to his historic death ray, which I
guess we can hear that it sort of sounds like
an ancient laser, like somehow our Comedies was able to
create a big laser that destroyed things in its path.
But it wasn't exactly like that. It was a much
a simpler machine that worked on basic roles of light
and heat. Yeah, and I think principles of of what
(05:52):
is concave versus what is convacts And according to Galen,
who wrote about the death ray some three d fifty
years after archimedes death, it worked like this. He would
position a series of people to hold a series of mirrors,
and he would instruct them very specifically which angle to
hold them at, and by concentrating a beam of light,
(06:13):
he could actually set Roman ships aflame. And we're talking
ships anywhere from I think two hundred to a thousand
feet away that were sort of undulating in the waves
of the Mediterranean. And it sounds a little bit suspect
for several reasons. First of all the fact that it
was first written about that many years after his death. Secondly,
another point being, this type of mirror warfare never became
(06:35):
part of the main arsenal. Why wouldn't anyone else used it?
If it was so effective, why didn't they take the
idea and use it for then on? Exactly? And I
guess my response to that would be just playing Devil's advocate.
Maybe it was so complex and so mathematically dense, how
one had to hold this complex series of mirrors that
no one got it except for Archimedes. Like that theory,
(06:57):
that's just a thought. Yeah, But I think, um, everyone
deserved so put in their two cents about whether this
could have happened, because they really don't know, and many
many people have tried, most notably um the myth Busters.
If you ever watched that show on the Discovery Channel.
They tried twice. They actually did it one time and
I think their first season, and they busted the myth.
They the way they set it up, they couldn't get
(07:18):
it to work, and they said it was implausible for
that Archimedes did and they got so many complaints after
this show aired They got a lot of complaints from
viewers emailing them saying, you're like, oh, what about this situation.
You ignored these possibilities that would have made it plausible.
And so they got so many complaints that they actually
did another show about it, and they challenged the viewers
to try to come up with a way that it
(07:38):
could be plausible, and they busted the myth even then,
and a grip of M I T students got together
and they were able to successfully set a ship on fire.
Granted it with a model ship. It was much much smaller.
It was only like, I think, a couple of hundred
feet away. It was stationary on a rooftop, and perhaps
that's the big clinker there. It wasn't undulating in the
(07:59):
way you know, if an object is sitting that still
and you're concentrating that much light on it, yeah, you
probably could set it on fire, but you have taken
to account the distance that it is away from you,
plus the fact that it's bobbing up and down. Yeah,
and they had a particularly cloudless day. I mean, it's
possible that our comedies had that. And the M I T.
To give them credit, they did use like an oak
replica of the ship, which was probably what the Romans
(08:21):
would have used, and like you said that they undulating
waves would have made it, so it's definitely not a
stationary object. But there was another earlier experiment in nineteen
seventy three, a Greek engineer did use a boat that
was actually on the water as a rowboat. Um probably
not the same material the Romans would have used, but
he was able to get it on fire using an
array of mirrors. So in different, like different experiments, different
(08:45):
parts of it have been seen to be plausible. So
there's still no definite answer, right, And I think that
the engineer used as many as seventy different people to
hold mirrors that were pretty big, I think five ft
by three feet. So until there's a really uniform experiment
where the same number of people are used, the same
number of controls are set on it, I think it's
gonna be hard to say whether or not it was true.
(09:06):
But I will add another piece of knowledge that may
or may not influence whether you believe in the Death ray.
But have you heard of the Lighthouse of Alexandria Jane,
the very famous one. It's one of the seven Wonders
of the ancient world, and it was commissioned by art. Yeah,
I've heard an article about this a long time ago,
and when I was doing research for that many many
(09:28):
moons ago, I read that the mirror inside the lighthouse
was so strong a concave mirror, that it could provide
light to ships up two hundreds of miles away. And again,
that could be a tall tale, but another part of
the tale was that it was so strong that when
the light hit it just right, it could be angled
to set ships far away on fire. And I thought, well,
(09:51):
that's weird because construction began on the lighthouse around two
b C, just two years before our commutees would have
been born. Furthermore, our commedees, like you said, studied in Alexandria,
so he would have gone over when the lighthouse was
either being built or remodeled, because we knew it was
constantly remodeled, and he would have been there at least
to observe the engineers at work or the great minds
(10:13):
who were conceiving of how to build the lighthouse and
how to revamp the mirror system. So it's just interesting
he just blew the story. Would I don't know, I
don't know you guys are gonna have to email me
and tell tell me what you think. And this is
just something I happen to put two and two together.
I don't know if there's any connection between the types
of and the lighthouse and the type of mirror that
our communities would have used, but it's a thought. But
(10:34):
all the science aside, because that is not my forte.
Um Drawing conclusions is my forte I wanted to bring you,
guys just full circle to the story of the Siege
of Syracuse. Um. We know that this was a pretty
big war that was raging between the Carthaginians and the Romans,
and like we said, Syracuse was stuck right in the middle.
And the first Punic War we saw we saw a
(10:56):
Syracuse sort of siding with with Rome because they was
a tribute system established where they would provide the Romans
with grain and they would give them a little bit
of tribute and they'd be protected essentially. But then Hannibal
comes along and he is just so darn successful scaling
the Alps and breaking into Italy that Syracusans think, well,
maybe we need to side with Carthage. Rome did not
(11:17):
like that at all, so they sent this really scary
General Marcus Marcellus. First they sent him to a neighboring
town where he killed everyone. Then he moved on to Syracuse.
They heard he was coming, so they fortified the city
and they were able to keep them out for a
really long time, but then they broke in. And so
I think Dane has this one more fabulous anecdote that
(11:39):
they or may not be true about poor hapless Archimedes
absorbed in his work. And let me know it too,
that Marcellus is pretty adamant no one kill Archimedes. I
think he really respected this guy's genius and he was
pretty ticked off when he found out about this. Yeah,
that's right. Like Canda said, Archimedes and his war machines
were able to hold them all for a while, but
they eventually got in in comedies. Was so wrapped up
(12:01):
in his geometric figures when when a soldier came to
arrest him and take him away, he screamed the soldier
and he was like, leave my circles alone. I think
in the loose translation, I love the use of circles,
like don't touch my circles and circles, and the soldier
got so upset that he killed Archimedes in a rage,
and according to Plutarch and Pliny, the elder Mary Salis
(12:23):
is very much grieved at this situation. But he was
not the nicest man. He broke into Syracuse on a
day when the Syracusans had abandoned their posts because they
were celebrating the festival of Artemus. So he was pretty sneaky,
and he'd known that if he was launching a snake attack,
he might lose the one guy he valued so much.
And who knows if he really loved Archimedes for the
crazy genius he was, or if you want to take
(12:44):
him back to rom to put him to work there.
We don't know. But that aside, all of these wonderful
musings that Jane and I have can be found not
only in our podcasts, but also in our brand new blog.
That's right. We both blog once a day and it's
called so if you miss some history Glass and it's
all on how stuff works dot com. So be sure
to visit the website to read our entries, our latest posts,
(13:06):
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