21 noviembre, 2009

EL NÚMERO "FI"

Esta entrada va dedicada a Ana. Llevo dos días diciendo "Fi" en vez de "Pi". Son dos letritas griegas que utilizamos mucho en dibujo técnico y matemáticas. "Fi" nos indica la divina proporción y "Pi" el numero irracional que que nos indica la razón entre la longitud de la circunferencia y el diámetro.

FI

\varphi = \frac{1 + \sqrt{5}}{2} \approx 1,618033988749894848204586834365638...

PI
\pi \approx 3{,}14159265358979323846...
Como llevamos dos meses hablando de la media proporcional, que como veis sale a todas horas, y ahora estamos con la demostración de la cuadratura del círculo, pues ya no se ni lo que digo. En fin, he encontrado un vdeo que os explica bastante bien la magia del númerito áureo y la divina proporción. Visionad la película que seguro que ya no se os olvida más, ¡sois la generación de la imagen!. Que o aproveche

1 comentario:

season dijo...

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