A Voyage of Discovery with Shapes
17
Apr 2009
Ancient Greece saw two thinkers discovering
a total of 17 shapes! They were Plato and Archimedes. The first discoveries of
shapes were made by them and although their original works have been lost yet the
teachings have been handed down from generation-to-generation verbally as was
the tradition of the Greeks.
Both Archimedes and Plato used basic shapes
like triangle, square etc. to put forth multiple shapes that stemmed from these
basic ones.
Plato put forth a set of 3D shapes known as Platonic Solids in his dialogue: the Timaeus. Those shapes have been given below.
Plato put forth a set of 3D shapes known as Platonic Solids in his dialogue: the Timaeus. Those shapes have been given below.
- Tetrahedron
- Hexahedron
- Octahedron
- Dodecahedron
- Icosahedron
Archimedes put forth a set of 13 polyhedra
shapes collectively known as the Archimedean Solids in his long-lost work
Pappus. The list of those shapes has been given below.
Although the history of shapes bases its soul primarily upon the discovery of the Platonic and the Catalan Solids, it would be incorrect to say that there were no other thinkers or scientists who did have anything to do with the discovery of shapes.
- Truncated tetrahedron
- Cuboctahedron
- Truncated Cube
- Truncated Octahedron
- Rhombicuboctahedron
- Truncated Cuboctahedron
- Snub Cube
- Icosidodecahedron
- Truncated Dodecahedron
- Truncated Icosahedron
- Rhombicosidodecahedron
- Truncated Icosidodecahedron
- Snub Dodecahedron
Although the history of shapes bases its soul primarily upon the discovery of the Platonic and the Catalan Solids, it would be incorrect to say that there were no other thinkers or scientists who did have anything to do with the discovery of shapes.
After all, who can forget the Father of
Geometry, Euclid himself – Euclid or
Euclid of Alexandria was a Greek
mathematician who discovered all the basic shapes that we know today. Some of
the shapes discovered by him have been given below.
- Square
- Circle
- Rectangle
- Triangle
This blog would feign to uphold the
brilliance of Plato and Archimedes without a brief description of their life
and works. The following paragraphs are a humble attempt from the writer to do
the same.
Plato lived during 427 to 347 BC and was
the son of Ariston, a descendant of Codrus – an ancient king of Athens, and
Perictione, a descendant of the famous Athenian lawgiver Solon. The time of
Plato is also known as the golden age of intellect of Greece with most of the
famous thinkers, scientists, and philosophers being present then. Plato was
greatly influenced by Pythagoras and Socrates. As Marcus Tulius Cicero, a Roman
philosopher, politician, lawyer, and orator, said, “Platonem ferunt didicisse
Pythagorea omnia” or “They say Plato learned all things Pythagorean.”
Archimedes (287 BC – 212 BC) was born in
Syracuse, Italy, as per the statement of a Byzantine Greek Historian John
Tzetzes. As cited by Plutarch in his Parallel Live, Archimedes was related to
King Hiero II, the ruler of Syracuse. Archimedes is well known for inventing or
discovering quite a lot of things. Some of the notable ones among them include
the following:
- The Archimedes Principle
- Archimedes Screw
- The Claw of Archimedes
- Heat Ray
The Archimedes Principle is a law of Fluid
Mechanics and was invented by Archimedes. According to this law:
“The upward buoyant force exerted on a fully or
partially submerged body is equal to the weight of the fluid that the body
displaces”.
The exact words of Archimedes to put forth
this law can be found in his treatise on Hydrostatics called On Floating
Bodies:
“Any object, wholly or partially immersed in a fluid,
is buoyant up to a force equal to the weight of the fluid displaced by the
object.”
The Archimedes Screw
This device was simply a tool for
transferring liquid from a low-lying liquid-body. For example, the transfer of
water from a low-lying water-body into irrigation ditches, as the Greeks used
to do for farming. The idea about such a screw is said to have come to
Archimedes during his visit to Egypt. Some historians have also claimed that
this device was in use by Assyrians somewhere around 350 years ago.
The Archimedes Claw
The Roman general Marcus Claudius Marcellus
was perhaps the best person to turn to for an accurate account of the
Archimedes Claw. After all, he faced the wrath of this weapon when he attacked
the city of Syracuse with a fleet of 60 Quinqueremes. However, the
ingeniousness of this weapon was put to a test in the modern world by a group
of scientists who actually created a working model of the Archimedes Claw.
The Heat Ray
This invention of Archimedes comprised a
set of mirrors placed strategically to collect the rays of the Sun and heat
them! The heated rays were concentrated onto enemy ships with the intention of
burning and destroying them.
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