A
few years after Einstein had published his special theory
of relativity, the world finaly understood his smartness.
During that time, Einstin had already begun to work on more
theories.
In
1907, Einstein suddenly had a question:. How would you get
Newton's gravitation to fit in with special relativity. And
then came what is known as general relativity. Einstein described
it as "the happiest thought of my life."
General
and Special relativity differ in one root way. Special relatiity
is about things moving at a constant rate, while general relativity
is about things moving faster and faster. We won't really
discuss any of this in depth but I'll tell you brieftly what
it's about.
1.
An upwards acceleration is the same as a downward gravitational
pull. That is when the elevator goes up, you feel that you
are pull downwards.
2.
Gravity bends light. When light passes through a gravitational
field, it bends.
3.
Space curvatures. Gravity bends the space around it. This
is why light bends when it goes into gravity, because the
space itself is bent.
4.
The stronger the gravity on an object, the slower time will
run for that object.
That
will be the farthest I'll go on general relativity. The reason
is that it is gets too complex, and I think you understand
it better when you get into higher grades.
Einstein's
general theory of relativity was a major contribution to astrophysics.
Because of it we now have the term "black hole."
Because of it we now know that the universe is expanding.
During
his final years, Einstein aimed to put gravitation and magnitism
in one big picture. But he wasn't able to figure it out, as
nobody has so far. However, Einstein's two theories has certainly
made him the greatest physicist of all time.
Those
who have interest in relativity should persue a career of
some sort of physics-related jobs, especially those dealing
with space. Since special relativity is generally complete,
While the special theory is already formulated, general relativity
is still expanding. Today, there are many topics of general
relativity to explore, like black holes.
Well,
that's it, I hope you'll find physics to be intersting. Bye.
