Multiverse ?! |
Brian Greene:
Is our universe the only universe?
Multiverse bubbles |
String theory visualisation |
Vocabulary:
Spectrum - a range of values of a quantity or
set of related quantities.
“Green
backs up the claim with descriptions of a wide spectrum of astrophysical
phenomena”
“The visible
spectrum is the spectrum of light that we can perceive with our eyes”
Astrophysical - concerned with astrophysics / "astrophysical
sciences" and astrophysics is the branch of astronomy that deals with the
physics of stellar phenomena.
„Astrophysical
sciences deal with physical and chemical processes that occur in stars and
galaxies”
To postulate – to assume or to claim that something
is true
“Scientists
have to postulate many things to prove the existence of so called dark matter
and dark energy”
Dimension – a measurement of the size of
something in a particular direction, such as the length, width, height, or
diameter
„We live in
a worlds which is made out of 4 dimensions, namely lenght, width, height, and
time”
To refute – to deny or to prove something to be
wrong (by giving an argument)
Scientists
usually refute theories which were postulated before the evidence”
Spontaneous - self-generated, involuntary,
automatic / produced naturally without external influence
„The
inflationary cosmology postulates that the amount of energy needed to create a
universe equals exactly zero – this in turn means that universes pop up into
existence spontaneously, and there is no need for any external agents.”
String – a cord usually made of fibre, - in
context of my speech it appears in a term “String theory” which is:
A mathematical theory for describing the
properties of fundamental particles, which represents the particles as
one-dimensional string-like objects, which exist in the normal four dimensions
of space-time plus additional dimensions, the total dimensions being ten,
eleven, or twenty-six depending on the version of the theory. The properties of
fundamental particles in string theory and their manner of interaction with
each other depend upon the modes of vibration of the strings. The
attractiveness of this theory rests in part on its ability to provide a unified
treatment of gravity as well as the three other basic forces of nature, in a
manner consistent with quantum mechanics. The great difficulty of doing the
calculations required by the theory, however, has thus far (1999) made it
impossible to calculate the observable properties, such as the mass, of known
particles, such as the electron, proton, mesons, quarks, and neutron; thus
there is as yet no experimental verification for the theory. The most popular
version of the theory depends on a mathematical property called supersymmetry,
and the theory derived form this principle is properly called superstring
theory, a term which is often used interchangeably with string theory