zones: by pB9GwF8

VIEWS: 0 PAGES: 3

									zones:
astronomical/atmospheric
  1. moon phase (other weather related)
  2. magnetic fields – magnetometer
  3. cosmic rays - neutrino detectors
  4. solar flares – neutrino detectors
  5. thermal radiation (heat) – thermometer, infrared
     spectroscope
  6. ultraviolet radiation - circular dichroism
     spectrometer
  7. ionizing radiation (gamma, etc…) - Geiger counters
     and scintillation counters

List of questions for Astronomy Contacts:

can we borrow equipment?
are there historical artifacts or charts we could use?
are there any live cosmic listening posts we can
access?
how much light does the ambient light of Kansas City
filter out?
can we calculate this in terms of years – ie stars of a
certain age are visible?
Is there a way to convert the density of the universe
into sound?
Is there a way to listen to ambient microwaves?
Is there a way to take the COBE maps of temp. variation
and turn it into sound?
How to extend the compressed sound so that it plays
longer?
Google night sky

Useful links:
The color of the universe:
http://www.pha.jhu.edu/~kgb/cosspec/
The sound of the bigbang:
http://www.astro.virginia.edu/~dmw8f/sounds/cdromfiles/
index.php
http://www.astro.virginia.edu/~dmw8f/BBA_web/index_fram
es.html

Notes on Astronomical DeepTime:
The Universe in a Nutshell, Stephen Hawking

Einstein’s relativity requires abandoning the idea of universal time.
Isaac Newton provided first mathematical model for space in Principia Mathematica
(1687) In this model space and time were static backgrounds against which events took
place; time was separate from space.
Replaces it with subjectivy time – time/space are conjoined.
“Space/Time is transformed from a passive background in which events take place to an
active participant in the dynamics of the universe.” – p. 21
You cannot curve space without curving time, thus time has a shape although it still has
only one direction.
Confirmed by two clocks placed on two different airplanes circling the Earth in opposite
directions. The higher velocity plane experiences time slower.
Acceleration and gravity work the same and both affect time.
Space/time is curved not flat – high density objects create a well in space/time just as
high velocity objects create a peak.
Gravity is just an effect of the warp of space/time (note this works only in general
relativity, MTheory and Brane theory view gravity differently)

15 billion year lifespan of the universe is predicted by Einstein’s theory (rate of
expansion vs gravitational pull)
Kant refered to the problem of either a finite or infinite universe as an “antimony of pure
reason” in that it seemed to be a logical contradiction.
If the universe was infinite then every point in the night sky would be occupied by a star
and all of their light would have already reached Earth, lighting up the night sky like one
giant sun.
What did god do before creating the universe? “He was preparing Hell for those who pry
too deep?” – St. Augustine.

Deterministic universe as announced by Einstein’s theory does not function on the
quantum level as per discoveries by Max Planck and Werner Heisenberg.
Particles do not have a definite position, only probably histories (phases/wavestates).

We cannot know what time is, only describe what has been found using mathematical
formulas in order to make predictions.

Because the universe is expanding, when we look at the night sky (back in time) we see
regions of higher density. We observe faint residual big-bang microwave radiation from
when the universe was much denser and hotter. This density curves space/time.
Measureument of this microwave spectrum shows that it passed through curved
space/time confirming expansion of universe. P.40

As one goes back in time, the cross sections of our past light cone reach a maximum size
and then contract depending upon the matter density of the universe.
The past is shaped like a pear.
p.74 Expanding Universe.
Hubble observed the Doppler effect at work in light from other galaxies. Galaxies
moving away have elongated frequencies. In the light spectrum they appear as red-shift.
If the galaxies were moving towards us they would be of a higher frequency (blue-shift).


p. 58 Imaginary Time and quantum theory
Imaginary time is time measured in imaginary numbers; it exists at right angles to
conventional space/time.

Imaginary time provides predictive mathematical models.
Because imaginary time exists at right angles to conventional time/space it can be said to
embody, along with C-Space/time, all possibilities.
Points in imaginary time can overlap with regular points of space/time.
Both real time and imaginary time come to a stop at singularities.
What we interpret as reality may be a four dimensional holographic reflections (3Brane)
of a higher dimensional construct.

p. 80 Quantum Uncertainty
Universe unpredictable on quantum scale – doesn’t have a single history, but every
possible history each with its own probability. (Richard Feynman) These possibilities
exist in Imaginary Time.
Real time determines Imaginary Time and vice versa.
Imaginary Time behaves just like another direction in space – it has no end or beginning,
just different directions.
History of the universe in Imaginary Time is shaped like a four-dimensional sphere. It is
a closed shape that has no specific boundary conditions.
The Anthropic principle states that the universe has to be as we see it because we are able
to see it. In other words, it takes 15 billion years for intelligent life to evolve in order to
observe the universe and the universe looks like the context that would support this type
of life.
p.94

								
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