JORGE GAJARDO ROJAS: LA TEORIA DERELATIVIDAD

sábado, 9 de abril de 2011

LA TEORIA DERELATIVIDAD

Como un ejemplo de lo que puede hacer Internet en la dvulgacion del conocimiento he aqui un ejemplo.Una conferencia del Profesor Suskind de Stanford que explica en 1 hora y media la teoria de las teorias de Einstein.

Obvio puede ser aburrido para alguien que no es especialista.Pero pensen

en los millones de alumnos de fisica del mundo que pueden aclarar sus con

ceptos mediante el acceso a Internet.Hay formas màs amigables de videos que explican lo mismo en forma mas general resumida y con muchas figuras en movimiento.Estan tambien disponibles en Internet.Por eso que no se concibe la educacion cientifica del siglo XXI con estos elementos.Su masificacion deberia ser prioridad uno porque es el unico medio externo a las aulas de paises con baja densidad de informacion y comprension de las nuevas teorias fisicas y con baja maduracion tecnologica de ellas como para

aplicarlas en sus sociedades.Esto permit practicamente la "venida virtual" de cientificos de alto nivel haciendo los profesores locales de facilitadores.

On the Scientific Theories of Special and General Relativity

At the beginning of the twentieth century, Albert Einstein revolutionized the way scientists think about space and time.

In his special theory of relativity, Einstein showed that time and length are not as absolute as everyday experience would suggest: Moving clocks run slower, and moving objects are shorter. Those are just two of the unusual properties of Einstein's world! Another consequence of special relativity is the most famous formula of all: E=mc², stating that two physical quantities which physicists had defined separately, namely energy and mass, are in fact equivalent.

In Einstein's general theory of relativity, space and time become even more flexible. "Your mileage may vary," and so may the time intervals you measure, depending on where and when you are. This flexibility has an analogue in the geometry of surfaces like that of a sphere - there is a curvature of space and time. Distorted space and time influence the way that material objects or light move. In fact, there is a direct connection to the cosmic interaction that holds the universe together, makes the earth orbit the sun and keeps our feet on the ground: gravity.

Einstein's theory of space, time and gravity predicts a number of new phenomena. Distortions of the geometry of space should propagate into the depths of space as so-called gravitational waves. If enough mass is concentrated in a given location, the perfect geometrical prison should form - a region called a black hole. No object that enters such a region can ever escape! In addition, there are the big bang models, which form the foundation of modern cosmology - the study of the universe as a whole, its structure and evolution.

General relativity is the foundation of modern astrophysics and cosmology. But there is another physical theory at least as fundamental: quantum theory. Our section Relativity and the quantum tells you what happens when you combine quantum theory and Einstein's special relativity: the result is modern particle physics, the study of the most elementary constituents of matter. The same section takes you right to the frontiers of today's physics - more concretely, to one of its most persistent unsolved problems: There's still no complete theory of quantum gravity, i.e. no theory that unites Einstein's general relativity with the laws of the quantum world.

This video series was produced by: The Cassiopeia Project - making science simple!

The Cassiopeia Project is an effort to make high quality science videos available to everyone. If you can visualize it, then understanding is not far behind.

http://www.cassiopeiaproject.com/

To read more about the Theory of Special Relativity, you can start here:

http://www.phys.unsw.edu.au/einsteinlight/

http://www.einstein-online.info/en/elementary/index.html

http://en.wikipedia.org/wiki/Special_relativity

To read more about the Theory of General Relativity, you can start here:

http://www.einstein-online.info/en/elementary/generalRT/index.html

http://en.wikipedia.org/wiki/General_relativity

To read more about "real-life" applications of Relativity, you can start here:

http://www.einstein-online.info/en/spotlights/complete_spotlights/index.html

To read more about Albert Einstein, you can start here:

http://en.wikipedia.org/wiki/Albert_Einstein

I would also suggest Walter Issacson's excellent biography: 'Einstein: His Life and Universe'

http://www.amazon.com/Einstein-Life-Universe-Walter-Isaacson/dp/0743264746/re...