- ...point
- A few other comologies will
be only summarily described. This is for lack of erudition,
Indian, Chinese and American comologies are equally fascinating.
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- ...as
- The American Heritage Dictionary (second
college edition)
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- ...argument
- From http://puffin.ptialaska.net/~svend/award.html
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- ...harmful.''
- Extracted from ``What's New'', by Robert L. Park
(March 3, 1995) produced by The American Physical Society.
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- ...
- See for example,
http://www.nas.org/nassnl/2-11.htm,
http://cyberwarped.com/~gcahf/ncahf/newslett/nl19-2.html,
http://washingtonpost.com/wp-srv/WPlate/1997-08/10/097l-081097-idx.html
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- ...Randi
-
http://www.mindspring.com/~anson/randi-hotline/1995/0046.html
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- ...issue
- The complete version can be found in the World-Wide-Web
at http://www.pd.infn.it/wwwcdf/science.html
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- ...omnipotent
- Some
relate this to the origin
of the decimal system, but it seems to me more reasonable to associate the
decimal system to our having ten fingers.
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- ...circumference
- Aristotle had previously
estimated a value of 400,000 stadia
(1 stadium=157.5m) which is about 1.6 times its actual size.
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- ...God
- From, A History of Science by H. Smith
Williams.
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- ...moving
-
This was a prescient remark, see Sect. 4.2 and Chap. 6.
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- ...Earth.
- This statement was produced during an informal
after-dinner conversation and was published after Luther's death; it
should therefore be taken with caution.
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- ...weight
- Galileo
allegedly
demonstrated his conclusions by dropping weights from the leaning tower
of Pisa though this has been doubted by historians.
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- ...him!
- No real
animals were hurt in this demonstration.
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- ...(1610)
- This landed him a permanent position as ``Chief
Mathematician of the University of Pisa and Philosopher and Mathematician
to the Grand Duke of Tuscany''
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- ...HREF="node84.html#chap-gtr">7)
- F = m a is also not universally valid but deviations from this
expression occur only at very small distances and can be understood in
the framework of Quantum Mechanics.
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- ...particles
- This is
not true when phenomena at very short distances are examined,
at distances below 10-8cm (atomic size) the difference between waves
and particles becomes blurred.
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- ...unanswered
- One can, however, use
this result to get a limit on the speed of light. If the human response
time is, say, half a second, then this experiment shows that light
travels faster than 2miles per second.
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- ...speed
- The speed depends on
the medium in which light travels; the value given above corresponds
to the speed in space.
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- ...vacuum
- In a medium there is some interaction
between the atoms and the waves and the speed can be different.
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- ...v
- In
practice the experiment is set on a rotating table and is
repeated for a variety of orientations.
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- ...distance.
- This was explained
by Spock to Kirk...at great length.
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- ...device
- One can, of course, say that the
length of a ruler is the one
measured while at rest with respect to it...but this is only a
convention. Once the result of any length measurement is known (for any
relative speed between ruler and measuring device), special relativity
determines unambiguously what any other observer would measure.
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- ...ft)
- This
corresponds to an astronaut moving at about half the speed of light toward
the plate.
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- ...Earth
- This corresponds to a speed of
90% that of light
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- ...height
- I ignore air resistance
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- ...small
- The
reasons behind the requirement that the box be small will become clear soon.
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- ...gem
- The Special Theory of Relativity is equally nice, it is based on the one
statement that all inertial frames of reference are equivalent.
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- ...known
- For
all we know our present theories of mechanics
and gravitation may also be invalid under certain conditions.
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- ...hole
- This is much more efficient than
nuclear power which would be incapable of driving such
bright sources.
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- ...decrease
- Needless to say this is a very small
effect, of the order of one part in a trillion.
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- ...acceleration
- I
assume that the objects coming into this region are not too heavy, so that
their gravitational forces can be ignored and that the start from the
same spot with identical velocities.
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- ...characteristics
- I am assuming here that the
moving things are not massive enough to noticeably curve space on their
own.
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- ...source
- More precisely this is the velocity along the line of
sight,
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- ...stars
- The name derives from the constellation in which they
were first observed.
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- ...cloud
- This is a small
galaxy (of only 108 stars) bound to the Milky Way.
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- ...cases
- In doing so astronomers must select type Ia supernovae
that exhibit no abnormalities, else the measurements might be
corrupted.
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- ...solutions
- The modification amounts to
the inclusion of a uniform cosmic pressure which balances the tendency to
the universe to expand.
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- ...quarks
- There are many hypotheses
about the way the universe looked at times
before that of quark formation, but none has been accepted yet this is an area of active
research.
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- ...particles
- It had been assumed for a
long time that they were massless, recent results however, indicate that
neutrinos have a very small mass, of a billionth of a proton mass or less.
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- ...electrons
- Everything is made up of
atoms. Atoms consist of a very dense and small nucleus and a bunch of
electrons surrounding it.
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- ...pressure
- This is just a peculiar name and should not be
interpreted as a judgment on the moral character of the electrons.
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- ...high
- Remember that the pressure must balance
gravity's pull. A star is a very massive body, hence gravity's pull will
be very large; the pressure must then be also very large to cancel it.
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- ...motel
- You
check in...but you never check out
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