Albert Einstein, "Relativity", Chapter 7: "There is hardly a simpler
law in physics than that according to which light is propagated in
empty space. Every child at school knows, or believes he knows, that
this propagation takes place in straight lines with a velocity c=300000
km/s."

Chapter 22: "...the law of the constancy of the velocity of light in
vacuo, which constitutes one of the two fundamental assumptions in the
special theory of relativity and to which we have already frequently
referred, cannot claim any unlimited validity. A curvature of rays of
light can only take place when the velocity of propagation of light
VARIES WITH POSITION."

The rational world would ask: How does the velocity of propagation of
light VARY WITH POSITION? Increases and becomes greater than c=300000
km/s? Decreases? Increase and decrease depend on what?

The zombie world asks nothing. It learns by rote, celebrates, worships,
sings dithyrambs, eats and teaches how to learn by rote, celebrate,
worship, sing dithyrambs and eat.

Pentcho Valev

Pentcho Valev wrote:
Albert Einstein, "Relativity", Chapter 7: "There is hardly a simpler
law in physics than that according to which light is propagated in
empty space....

Pentcho Valev is a documented crank in the Eur. J. Phys.

And that's quite a rap list of fumbles
http://www.google.com/search?q=Valev...ers.pandora.be

Pentcho Valev FAQ
http://bip.cnrs-mrs.fr/bip10/valevfaq.htm

Pentcho Valev wrote:
Albert Einstein, "Relativity", Chapter 7: "There is hardly a simpler
law in physics than that according to which light is propagated in
empty space. Every child at school knows, or believes he knows, that
this propagation takes place in straight lines with a velocity c=300000
km/s."

Chapter 22: "...the law of the constancy of the velocity of light in
vacuo, which constitutes one of the two fundamental assumptions in the
special theory of relativity and to which we have already frequently
referred, cannot claim any unlimited validity. A curvature of rays of
light can only take place when the velocity of propagation of light
VARIES WITH POSITION."

The rational world would ask: How does the velocity of propagation of
light VARY WITH POSITION? Increases and becomes greater than c=300000
km/s? Decreases? Increase and decrease depend on what?

Sunrise and sunset. For computational purposes,
sunrise or sunset is defined to occur when the
geometric zenith distance of center of the Sun is
90.8333 degrees. That is, the center of the Sun
is geometrically 50 arcminutes below a horizontal
plane. For an observer at sea level with a level,
unobstructed horizon, under average atmospheric
conditions, the upper limb of the Sun will then
appear to be tangent to the horizon. The 50-arcminute geometric
depression of the Sun's center used for
the computations is obtained by adding the average
apparent radius of the Sun (16 arcminutes) to the
average amount of atmospheric refraction at the
horizon (34 arcminutes).
http://aa.usno.navy.mil/faq/docs/RST_defs.html

Sue...



The zombie world asks nothing. It learns by rote, celebrates, worships,
sings dithyrambs, eats and teaches how to learn by rote, celebrate,
worship, sing dithyrambs and eat.

Pentcho Valev

Sam Wormley wrote:
Pentcho Valev wrote:
Albert Einstein, "Relativity", Chapter 7: "There is hardly a simpler
law in physics than that according to which light is propagated in
empty space....

Pentcho Valev is a documented crank in the Eur. J. Phys.

And that's quite a rap list of fumbles
http://www.google.com/search?q=Valev...ers.pandora.be

Pentcho Valev FAQ
http://bip.cnrs-mrs.fr/bip10/valevfaq.htm

http://bip.cnrs-mrs.fr/bip10/valevfaq.htm

"Can a system at equilibrium do work?"

Relativistic effects take place in the small, ie v c. If an object
is accelerated, it gains mass that way because of relativistic tradeoff
of velocity for mass to prevent it from achieving c, light speed.

So, does not a gyroscope under acceleration gain mass, even very, very
small amounts?

I don't understand that very well: as a massy object approaches c,
force applied does not increase the velocity delta F = m delta v,
instead it increases mass and velocity, delta F = delta m delta v. As
v approaches c, delta F = delta m v. At even small values of v the
coefficient of m is not unity. How do you talk about the tradeoff
between those two, mass and velocity, relativistically?


Ross

"Pentcho Valev" wrote in message oups.com...

First you should make the little exercise I gave you on
http://groups.google.com/group/sci.s...94c24e29f17209

Dirk Vdm

Dirk Van de moortel wrote:
"Pentcho Valev" wrote in message oups.com...

First you should make the little exercise I gave you on
http://groups.google.com/group/sci.s...94c24e29f17209

Dirk Vdm

I have a little excercise for Dirty Van of the Motel:

can you bent and lick your aswhole pig? Dogs do that successfully all
the time, why can't you?

When you are done, continue studying the square root function.

Mike

Ross A. Finlayson wrote:
Sam Wormley wrote:
Pentcho Valev wrote:
Albert Einstein, "Relativity", Chapter 7: "There is hardly a simpler
law in physics than that according to which light is propagated in
empty space....

Pentcho Valev is a documented crank in the Eur. J. Phys.

And that's quite a rap list of fumbles
http://www.google.com/search?q=Valev...ers.pandora.be

Pentcho Valev FAQ
http://bip.cnrs-mrs.fr/bip10/valevfaq.htm

http://bip.cnrs-mrs.fr/bip10/valevfaq.htm

"Can a system at equilibrium do work?"

Relativistic effects take place in the small, ie v c. If an object
is accelerated, it gains mass that way because of relativistic tradeoff
of velocity for mass to prevent it from achieving c, light speed.

So, does not a gyroscope under acceleration gain mass, even very, very
small amounts?

It gains an equivalent mass.
IOW a wreck involving a fast heavy vehicle
can make the same ammount of schrapnel as
a wreck of a slow lightweight vehicle
carrying a fast gyro.

When a particle splashs into a bucket of
water (calorimeter) and raises the temperature
we frequently don't know if the particle
was heavy, hasty or hot. )

I don't know how many volts I weigh on
a bathroom scale but an electon should
weigh 0.511MeV.


http://www.iskp.uni-bonn.de/gruppen/...wparameter.jpg


Sue...



I don't understand that very well: as a massy object approaches c,
force applied does not increase the velocity delta F = m delta v,
instead it increases mass and velocity, delta F = delta m delta v. As
v approaches c, delta F = delta m v. At even small values of v the
coefficient of m is not unity. How do you talk about the tradeoff
between those two, mass and velocity, relativistically?


Ross

Pentcho Valev is a documented crank in the Eur. J. Phys.

************************

One man's crank is another man's general systems thinker.

Ross A. Finlayson wrote:
Sam Wormley wrote:

Pentcho Valev wrote:

Albert Einstein, "Relativity", Chapter 7: "There is hardly a simpler
law in physics than that according to which light is propagated in
empty space....

Pentcho Valev is a documented crank in the Eur. J. Phys.

And that's quite a rap list of fumbles
http://www.google.com/search?q=Valev...ers.pandora.be

Pentcho Valev FAQ
http://bip.cnrs-mrs.fr/bip10/valevfaq.htm


http://bip.cnrs-mrs.fr/bip10/valevfaq.htm

"Can a system at equilibrium do work?"

Relativistic effects take place in the small, ie v c. If an object
is accelerated, it gains mass that way because of relativistic tradeoff
of velocity for mass to prevent it from achieving c, light speed.


See: http://scienceworld.wolfram.com/phys...isticMass.html

Perhaps you mean velocity instead of acceleration. Also keep in
mind that velocity is always relative to an observer, and never
absolute.

Pentcho Valev wrote:
Albert Einstein, "Relativity", Chapter 7: "There is hardly a simpler
law in physics than that according to which light is propagated in
empty space. Every child at school knows, or believes he knows, that
this propagation takes place in straight lines with a velocity c=300000
km/s."

Chapter 22: "...the law of the constancy of the velocity of light in
vacuo, which constitutes one of the two fundamental assumptions in the
special theory of relativity and to which we have already frequently
referred, cannot claim any unlimited validity. A curvature of rays of
light can only take place when the velocity of propagation of light
VARIES WITH POSITION."

The rational world would ask: How does the velocity of propagation of
light VARY WITH POSITION? Increases and becomes greater than c=300000
km/s? Decreases? Increase and decrease depend on what?

The zombie world asks nothing. It learns by rote, celebrates, worships,
sings dithyrambs, eats and teaches how to learn by rote, celebrate,
worship, sing dithyrambs and eat.

Pentcho Valev

The velocity of light in GR is a function of position because spacetime
is not flat because of the existence of gravitating objects which curve
spacetime (again, according to the way GR theorizes about spacetime).
It was for this reason that Einstein predicted that a light beam
passing the sun would be deflected from its straight path.