Perfect Shapes
(p.naga prasad)
Perfect ShapesThe Greeks didn?t? stop with
thnking that a ratio wa perfet. Theyalso decided that some
shapes were more Perfect than others! They thought the
circle was a perfect shape, and theyheld the belief that
all things inhe Universe moved incircles. Planets move
around the sun in ellipticalrather than circular
orbits,Ellipses look like squashed circles or ovals. How
does a ball move when you throw it though the air,or when
it bounches up off the cricket pitch? When a ball is
thrown upward,it traces an arc. Ranibows form arcs across
the sky. The type of arc traced by a ball that?s thrown up
and then begins tomove bck down to earth is a special type
of arc. Have you watched what happens when yu throw a
pebble into a lake? It splashes, but what shape do the
ripples take? Can yu make the ripples elliptical,or are
theyalways circular? Watch water when it swirls in a basin
as it goes down the drain. What shape does it take? Same
as the ripples? Do you know what shape our DNA is? Our
genetic material is arranged in the form of a double
helix,which is a special three-dimensinal spiral. The
rules goverining the shapes of spirals,arcs,waves,bubbles
and ripples.their formatin and their descriptin are
Important in the fields of physics such as fluid
mechanics,magnetism and oceanography. They can provide
clues to chemists that help them understand how atoms are
arranged in certain molecules. Mathematicians study shapes
and their properties. Studying the properties of shapes
can give us clues that help design instruments to be
efficient,to understand movement, to study light and radio
waves,to engineer bridges,to make machines like helicopters
and tools as simple as screws and even to understand
weather patterns and predict the weather.
Resumos Relacionados
- Is There A Theory Of Everything?
- Shapes
- The Dao Speaks
- Begining Of The Universe
- Linda Goodman's Star Signs
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