THE INCREDIBLE INTELLIGENCE OF EINSTEINIANS

http://en.allexperts.com/q/Astronomy...ed-light-2.htm Steve
Carlip, a professor of UC Davis: "While GR does not require constant
c, neither does it prohibit constant c. In fact, recent experiments
have strongly indicate that gravity travels at c, thereby confirming
the constancy of c in GR."

Pentcho Valev

Pentcho Valev wrote:
http://en.allexperts.com/q/Astronomy...ed-light-2.htm Steve
Carlip, a professor of UC Davis: "While GR does not require constant
c, neither does it prohibit constant c. In fact, recent experiments
have strongly indicate that gravity travels at c, thereby confirming
the constancy of c in GR."

Sorry, the wisdom belongs to Prof. James Gort, not to Steve Carlip.
Stive Carlip is the author of a different wisdom:

http://math.ucr.edu/home/baez/physic..._of_light.html
Steve Carlip: "Is c, the speed of light in vacuum, constant? At the
1983 Conference Generale des Poids et Mesures, the following SI
(Systeme International) definition of the metre was adopted: The metre
is the length of the path travelled by light in vacuum during a time
interval of 1/299 792 458 of a second. This defines the speed of light
in vacuum to be exactly 299,792,458 m/s. This provides a very short
answer to the question "Is c constant": Yes, c is constant by
definition!"

Pentcho Valev

"Pentcho Valev" wrote in message ups.com...
http://en.allexperts.com/q/Astronomy...ed-light-2.htm Steve
Carlip, a professor of UC Davis: "While GR does not require constant
c, neither does it prohibit constant c. In fact, recent experiments
have strongly indicate that gravity travels at c, thereby confirming
the constancy of c in GR."

Pentcho Valev
What recent "experiments"?
The only "experiments" so far have provided nothing.
Whenever a sentence begins with "In fact", it is a sign that the
moron is about to lie through his teeth.

"Pentcho Valev" wrote in message ups.com...
Pentcho Valev wrote:
http://en.allexperts.com/q/Astronomy...ed-light-2.htm Steve
Carlip, a professor of UC Davis: "While GR does not require constant
c, neither does it prohibit constant c. In fact, recent experiments
have strongly indicate that gravity travels at c, thereby confirming
the constancy of c in GR."

Sorry, the wisdom belongs to Prof. James Gort, not to Steve Carlip.
Stive Carlip is the author of a different wisdom:

http://math.ucr.edu/home/baez/physic..._of_light.html
Steve Carlip: "Is c, the speed of light in vacuum, constant? At the
1983 Conference Generale des Poids et Mesures, the following SI
(Systeme International) definition of the metre was adopted: The metre
is the length of the path travelled by light in vacuum during a time
interval of 1/299 792 458 of a second. This defines the speed of light
in vacuum to be exactly 299,792,458 m/s. This provides a very short
answer to the question "Is c constant": Yes, c is constant by
definition!"

Pentcho Valev

He's right there, the definition of c is 2AB/(t'A-tA) = c = 0/0, whereas
the speed of light, s, is 299,792,458 m/s relative to the source.
'c' is not the speed of light, 's' is.