Science > Physics > Researchers use semiconductors to set speed limit on light
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Science > Physics |
| User: |
"Neutron" |
| Date: |
03 Oct 2004 02:32:01 PM |
| Object: |
Researchers use semiconductors to set speed limit on light |
Sounds very interesting:
"In a nod to scientific paradox, researchers at the University of
California, Berkeley, have slowed light down in an effort to speed up
network communication.
They have shown for the first time that the group velocity of light -
the speed at which a laser pulse travels along a light wave - can be
slowed to about 6 miles per second in semiconductors. While that speed
is not exactly the pace of a turtle, it is 31,000 times slower than
the 186,000 miles (or 300 million meters) per second that light
normally clocks while traveling through a vacuum."
Full story: http://www.physorg.com/news1363.html
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| User: "glbrad01" |
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| Title: Re: Researchers use semiconductors to set speed limit on light |
06 Oct 2004 06:53:03 AM |
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They aren't slowing the speed of light. They are increasing the quality of
some maze through which it must find its way to the end. The end result
looks like a slowing down of the speed of light but that's all it is. Just
as light really can't intrinsically bend through a gravity field, however
much it looks like it is bending, neither can it intrinsically slow down
while traveling through any medium whatsoever. The possible number of paths
through which it must pass through while traveling from point A to point B
greatly increase in both cases culminating only in different looks and ends.
Light will never "resume the speed of light" at any end of any maze existing
for it because it really never leaves its [constant of] velocity in the
first place anywhere along the varying paths detouring its integral
multiplicities here and there, hither and yon.
The speed of light, 300,000 kilometers (rounded up) per second, means what
it says because it is zero time based (it is universal mean time based).
Being zero time based, it can't possibly be slowed, it can't possibly be
caught up to or surpassed except relatively speaking. "Relatively speaking"
though, nothing else extant can travel slower than it travels. Thus the
Universe sets up the alternative absolute of [neither can it be speeded up].
Brad
"Neutron" <neutron_p@lycos.com> wrote in message
news:602d73d9.0410031132.6e31f8da@posting.google.com...
Sounds very interesting:
"In a nod to scientific paradox, researchers at the University of
California, Berkeley, have slowed light down in an effort to speed up
network communication.
They have shown for the first time that the group velocity of light -
the speed at which a laser pulse travels along a light wave - can be
slowed to about 6 miles per second in semiconductors. While that speed
is not exactly the pace of a turtle, it is 31,000 times slower than
the 186,000 miles (or 300 million meters) per second that light
normally clocks while traveling through a vacuum."
Full story: http://www.physorg.com/news1363.html
.
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| User: "Old Man" |
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| Title: Re: Researchers use semiconductors to set speed limit on light |
03 Oct 2004 09:00:36 PM |
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"Neutron" <neutron_p@lycos.com> wrote in message
news:602d73d9.0410031132.6e31f8da@posting.google.com...
Sounds very interesting:
"In a nod to scientific paradox, researchers at the University of
California, Berkeley, have slowed light down in an effort to speed up
network communication.
They have shown for the first time that the group velocity of light -
the speed at which a laser pulse travels along a light wave - can be
slowed to about 6 miles per second in semiconductors. While that speed
is not exactly the pace of a turtle, it is 31,000 times slower than
the 186,000 miles (or 300 million meters) per second that light
normally clocks while traveling through a vacuum."
Full story: http://www.physorg.com/news1363.html
Where's the "paradox" ?
[Old Man]
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| User: "" |
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| Title: Re: Researchers use semiconductors to set speed limit on light |
04 Oct 2004 06:02:51 AM |
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In article <juednVlXFc1aM_3cRVn-jg@prairiewave.com>,
"Old Man" <nomail@nomail.net> wrote:
"Neutron" <neutron_p@lycos.com> wrote in message
news:602d73d9.0410031132.6e31f8da@posting.google.com...
Sounds very interesting:
"In a nod to scientific paradox, researchers at the University of
California, Berkeley, have slowed light down in an effort to speed up
network communication.
They have shown for the first time that the group velocity of light -
the speed at which a laser pulse travels along a light wave - can be
slowed to about 6 miles per second in semiconductors. While that speed
is not exactly the pace of a turtle, it is 31,000 times slower than
the 186,000 miles (or 300 million meters) per second that light
normally clocks while traveling through a vacuum."
Full story: http://www.physorg.com/news1363.html
Where's the "paradox" ?
It's a typo. The text should have read pair of docs. Voice text
code needs some work.
/BAH
Subtract a hundred and four for e-mail.
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