Free Republic
Browse · Search
News/Activism
Topics · Post Article

Skip to comments.

Speed of light may have changed recently
New Scientist ^ | 6/30/04 | Eugenie Samuel Reich

Posted on 06/30/2004 1:35:28 PM PDT by NukeMan

click here to read article


Navigation: use the links below to view more comments.
first previous 1-5051-100101-150151-200 ... 251-264 next last
To: NukeMan
Speed of light may have changed recently

My bad! Won't happen again.

51 posted on 06/30/2004 1:57:53 PM PDT by tortoise (All these moments lost in time, like tears in the rain.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: VadeRetro

Enstein was correct, light has a constant speed, you are getting older and slowing down.


52 posted on 06/30/2004 1:58:05 PM PDT by U S Army EOD (John Kerry, the mother of all flip floppers.)
[ Post Reply | Private Reply | To 45 | View Replies]

To: NukeMan
The speed of light, one of the most sacrosanct of the universal physical constants, may have been lower as recently as two billion years ago - and not in some far corner of the universe, but right here on Earth.

Two billion years ago, the interstellar highway patrol were a lot more strict.

53 posted on 06/30/2004 1:58:53 PM PDT by Poohbah ("Mister Gorbachev, TEAR DOWN THIS WALL!" -- President Ronald Reagan, Berlin, 1987)
[ Post Reply | Private Reply | To 1 | View Replies]

To: NukeMan
Speed of light may have changed recently

It's Bush's fault.

54 posted on 06/30/2004 1:59:01 PM PDT by VRWCmember (Mais Oui! "Kerry" est le mot francais pour "Dukakis"!)
[ Post Reply | Private Reply | To 1 | View Replies]

To: djreece

marking


55 posted on 06/30/2004 1:59:11 PM PDT by djreece
[ Post Reply | Private Reply | To 49 | View Replies]

To: U S Army EOD
There may be some merit to this story, through careful observations, I noticed my electric meter runs much faster when I turn on the lights and the air conditioner in the house.

Try having your stepdaughter use a hair straightener and a hair dryer. I could rent my meter out as a centrifuge.

56 posted on 06/30/2004 1:59:44 PM PDT by Dahoser (9/11---The Legacy of Clinton treating terrorism as a law enforcement issue. Kerry's plan, too.)
[ Post Reply | Private Reply | To 41 | View Replies]

To: NukeMan

Oh crap! Now I'm going to have to readjust the warp drive on my Toyota.

There goes my holiday weekend.


57 posted on 06/30/2004 1:59:46 PM PDT by Rockitz (After all these years, it's still rocket science.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: PatrickHenry; Physicist

Now they've done it. I have to go back and review all this Sommerfeld stuff...

And didn't Einstein originally just assume the speed of light as a constant?


58 posted on 06/30/2004 2:00:01 PM PDT by <1/1,000,000th%
[ Post Reply | Private Reply | To 7 | View Replies]

To: mcg1969
Yeah, but I usually skip a couple versions before upgrading

Funny! I was thinking the same thing!

59 posted on 06/30/2004 2:01:18 PM PDT by Lijahsbubbe
[ Post Reply | Private Reply | To 47 | View Replies]

To: NukeMan

The speed of light and the color of light are related. If the speed of light has increased, would the old light from galaxies long ago and far away appear to be redshifted?


60 posted on 06/30/2004 2:01:26 PM PDT by RightWhale (Destroy the dark; restore the light)
[ Post Reply | Private Reply | To 1 | View Replies]

To: NukeMan

The Top 20 Cool Things About a Car that Goes Faster than the Speed of Light


20 Sleep 'til noon. Still get to work by 8:00am!

19 Doppler shift makes red traffic lights look green.

18 Breaking laws of physics only a misdemeanor in most states.

17 Never in car long enough to hear an entire Madonna song.

16 Carl Sagan and Stephen Hawking keep bugging you to carpool.

15 No one can see you pick your nose while you drive.

14 Lunch breaks in Paris, circa 1792.

13 LA to Vegas in 2 nanoseconds.

12 You can stop worrying about being sucked into a black hole driving home from work.

11 You'll be so thin while driving it you can even wear horizontal stripes.

10 That deer in your headlights is actually behind you.

9 Kid from Mentos commercial almost guaranteed to lose a limb if he tries to duck through back seat.

8 Traffic enforcement limited to cops with PhD's in Quantum Physics.

7 Bugs never see you comin'.

6 You can get to the good hookers before Charlie Sheen.

5 Can make a fortune delivering pizza with the slogan "It's there before you order or it's free!"

4 Car makes it from Hollywood to London fast enough to not arouse suspicions of Elizabeth Hurley.

3 License plate: "Me=mc2"

2 Cigarette butts don't land in the backseat -- they land in last week!

and the Number 1 Cool Thing About a Car that Goes Faster than the Speed of Light...

1. drive-by shooting stars


http://hagen.let.rug.nl/peterm/jokes/joke40.htm


61 posted on 06/30/2004 2:02:14 PM PDT by nuconvert ( "Let Freedom Reign !" ) ( Azadi baraye Iran)
[ Post Reply | Private Reply | To 1 | View Replies]

To: NukeMan

This is really posted at 5:02:30.


62 posted on 06/30/2004 2:02:20 PM PDT by LurkedLongEnough (Bush '04 --- in a F'n landslide.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: VadeRetro

Two billion years ago ... wasn't that when we switched to Universal Savings Time? In order to conserve energy, if memory serves.


63 posted on 06/30/2004 2:02:22 PM PDT by PatrickHenry (Felix, qui potuit rerum cognoscere causas.)
[ Post Reply | Private Reply | To 45 | View Replies]

To: Dahoser

Keep thinking she is my stepdaughter, at least that is what I tell the neighbors. They are beginning to wonder how I came up with a new stepdaughter without getting married.


PS: Keep this to yourself.


64 posted on 06/30/2004 2:02:35 PM PDT by U S Army EOD (John Kerry, the mother of all flip floppers.)
[ Post Reply | Private Reply | To 56 | View Replies]

To: NukeMan
And in March, Flambaum claimed that the ratio of different elements left over from just after the big bang suggests that alpha(s) must have been different then compared with its value today (Physical Review D, vol 69, p 063506).

Assuming, of course, a big bang to begin with.
65 posted on 06/30/2004 2:03:21 PM PDT by aruanan
[ Post Reply | Private Reply | To 1 | View Replies]

To: <1/1,000,000th%
And didn't Einstein originally just assume the speed of light as a constant?

I think he deduced it as a consequence of Maxwell's equations. That's where he got the symbol "c" from, I'm told. But as always, I'll yield to the experts, who often correct my babblings.

66 posted on 06/30/2004 2:04:36 PM PDT by PatrickHenry (Felix, qui potuit rerum cognoscere causas.)
[ Post Reply | Private Reply | To 58 | View Replies]

To: NukeMan
299,792,458 m/s -- it's not just a good idea... it's the law!
67 posted on 06/30/2004 2:05:13 PM PDT by kevkrom (Reagan lives on... as long as we stay true to his legacy)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Cap Huff

Faster? No, they are SLOWER. At least in my kitchen. I'll check the bathroom tonight.


68 posted on 06/30/2004 2:05:17 PM PDT by Blood of Tyrants (Even if the government took all your earnings, you wouldn't be, in its eyes, a slave.)
[ Post Reply | Private Reply | To 26 | View Replies]

To: Blood of Tyrants

I first notice it with the refrigerator light.


69 posted on 06/30/2004 2:07:28 PM PDT by Cap Huff
[ Post Reply | Private Reply | To 68 | View Replies]

To: PatrickHenry

"A varying speed of light contradicts Einstein's theory of relativity, and would undermine much of traditional physics." I'm no physicist, but that assertion seems a stretch because if the 'constant is sliding upward, the relative 'whole-universe' relationship would be the same at any given temporal point. Am I confused or what?


70 posted on 06/30/2004 2:07:48 PM PDT by MHGinTN (If you can read this, you've had life support from someone. Promote life support for others.)
[ Post Reply | Private Reply | To 7 | View Replies]

To: VRWCmember
I can see it already:

No laws of physics changed when Clinton lied


71 posted on 06/30/2004 2:08:16 PM PDT by Dilbert56
[ Post Reply | Private Reply | To 54 | View Replies]

To: PatrickHenry
Two billion years ago ... wasn't that when we switched to Universal Savings Time? In order to conserve energy, if memory serves.

I wasn't around then. You're the expert.

72 posted on 06/30/2004 2:08:20 PM PDT by VadeRetro
[ Post Reply | Private Reply | To 63 | View Replies]

To: NukeMan
According to CNN, it dropped quite a bit very recently...


73 posted on 06/30/2004 2:08:36 PM PDT by mikrofon (RIP, Columbia)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Cap Huff

Faster or slower in the fridge? Inquiring minds want to know!


74 posted on 06/30/2004 2:10:31 PM PDT by Blood of Tyrants (Even if the government took all your earnings, you wouldn't be, in its eyes, a slave.)
[ Post Reply | Private Reply | To 69 | View Replies]

To: MHGinTN
A varying speed of light contradicts Einstein's theory of relativity

The Theory is okay. If the speed of light is not constant, and of course it isn't at all, results may lie outside the Theory rather than contradict it.

75 posted on 06/30/2004 2:10:59 PM PDT by RightWhale (Destroy the dark; restore the light)
[ Post Reply | Private Reply | To 70 | View Replies]

To: MHGinTN
Am I confused or what?

Probably. But so am I. If the speed of light is variable, I'll need to rethink just about everything.

76 posted on 06/30/2004 2:12:21 PM PDT by PatrickHenry (Felix, qui potuit rerum cognoscere causas.)
[ Post Reply | Private Reply | To 70 | View Replies]

To: U S Army EOD

I know nothingk...nothingk!


77 posted on 06/30/2004 2:12:30 PM PDT by Dahoser (9/11---The Legacy of Clinton treating terrorism as a law enforcement issue. Kerry's plan, too.)
[ Post Reply | Private Reply | To 64 | View Replies]

To: NukeMan

This happens every time I get a new set of tires for my truck.


78 posted on 06/30/2004 2:13:24 PM PDT by azhenfud ("He who is always looking up seldom finds others' lost change...")
[ Post Reply | Private Reply | To 1 | View Replies]

To: NukeMan

Too bad Mallomar season just ended !


Finding the Speed of Light with
Marshmallows-A Take-Home Lab

Robert H. Stauffer, Jr., Cimarron-Memorial High School, Las Vegas, Nevada, USA

I have heard that at 16 years old, Albert Einstein constantly wondered what it would be like to ride on a beam of light. Students in physics always seem to be fascinated by the properties of light. However, speed-of-light demonstrations often require extensive preparation or expensive equipment. I have prepared a simple classroom demonstration that the students can also use as a take-home lab.

The activity requires a microwave oven, a microwave-safe casserole dish, a bag of marshmallows, and a ruler. (The oven must be of the type that has no mechanical motion-no turntable or rotating mirror. If there is a turn-table, remove it first.) First, open the marshmallows and place them in the casserole dish, completely covering it with a layer one marshmallow thick. Next, put the dish of marshmallows in the microwave and cook on low heat. Microwaves do not cook evenly and the marshmallows will begin to melt at the hottest spots in the microwave. (I leaned this from our Food Science teacher Anita Cornwall.) Heat the marshmallows until they begin to melt in four or five different spots. Remove the dish from the microwave and observe the melted spots. Take the ruler and measure the distance between the melted spots. You will find that one distance repeats over and over. This distance will correspond to half the wavelength of the microwave, about 6 cm. Now turn the oven around and look for a small sign that gives you the frequency of the microwave. Most commercial microwaves operate at 2450 MHz.

All you do now is multiply the frequency by the wavelength. The product is the speed of light.

Example:

Velocity = Frequency ´ Wavelength

Velocity = 2450 MHz ´ 0.122 m

Velocity = 2.99 ´ 108 m/s

This works in my physics class, often with less than 5% error. Then the students can eat the marshmallows.

(Reprinted with permission from The Physics Teacher, vol. 35, April 1997, p. 231. Copyright 1997 American Association of Physics Teachers )


79 posted on 06/30/2004 2:13:47 PM PDT by COUNTrecount
[ Post Reply | Private Reply | To 1 | View Replies]

To: NukeMan
I wonder what effect, if any, that this has on the dark energy and expansion acceleration/ Big Rip theories.
80 posted on 06/30/2004 2:14:18 PM PDT by Laurence of the Rats (Eternal Hate To Rome)
[ Post Reply | Private Reply | To 1 | View Replies]

To: NukeMan

"String theory seemed too far from experiment. He suspected that the string theorists were not trying hard enough to prove themselves wrong"
Gleick on Richard P. Feynman

81 posted on 06/30/2004 2:15:03 PM PDT by perfect stranger
[ Post Reply | Private Reply | To 1 | View Replies]

To: COUNTrecount
The Oklo reactor started up nearly two billion years ago when groundwater filtered through crevices in the rocks and mixed with uranium ore to trigger a fission reaction that was sustained for hundreds of thousands of years. -Eugenie Samuel Reich

Hey, I didn't know there had been a natural fission reactor. What a gyp!

82 posted on 06/30/2004 2:16:30 PM PDT by NutCrackerBoy
[ Post Reply | Private Reply | To 79 | View Replies]

To: NukeMan

Now Bush is screwing up the environment and changing the speed of light!


83 posted on 06/30/2004 2:16:39 PM PDT by Brilliant
[ Post Reply | Private Reply | To 1 | View Replies]

To: NukeMan
A varying speed of light contradicts Einstein's theory of relativity,

Maybe not. IIRC, Einstein just postulated that nothing can move faster than the speed of light. Actually he postulated that the speed of light is the same for all observers, regardless of their relative motion. The rest followed from that assumption.

84 posted on 06/30/2004 2:17:57 PM PDT by El Gato (Federal Judges can twist the Constitution into anything.. Or so they think.)
[ Post Reply | Private Reply | To 1 | View Replies]

To: Shryke

4004 BC + 2004 AD = 6008 years.

Looser!

;^)


85 posted on 06/30/2004 2:18:10 PM PDT by null and void (The light pours out of me/It jerks out of me/Like blood/In this still life/Heart beats up love)
[ Post Reply | Private Reply | To 50 | View Replies]

To: NutCrackerBoy

There have been more than one. There was another in what is now called Brazil.


86 posted on 06/30/2004 2:18:22 PM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
[ Post Reply | Private Reply | To 82 | View Replies]

To: Blood of Tyrants

Faster. I used to see just a little bit of darkness when opening the door, but now it seems to be instantly light. Someone tried telling me that the light always stays on, but I'm not that dumb.


87 posted on 06/30/2004 2:18:31 PM PDT by Cap Huff
[ Post Reply | Private Reply | To 74 | View Replies]

To: Shryke
Ahem. Nothing existed 6000 years ago, Mr. Beelzebub.

Can "nothing" actually "exist", or does it just sort of non-exist?

88 posted on 06/30/2004 2:19:19 PM PDT by Ichneumon ("...she might as well have been a space alien." - Bill Clinton, on Hillary, "My Life", p. 182)
[ Post Reply | Private Reply | To 42 | View Replies]

To: Ichneumon
Can "nothing" actually "exist", or does it just sort of non-exist?

Nothing definitely exists. I've got quite a bit of it in my pocket.

89 posted on 06/30/2004 2:21:05 PM PDT by PatrickHenry (Felix, qui potuit rerum cognoscere causas.)
[ Post Reply | Private Reply | To 88 | View Replies]

To: Ichneumon
Can "nothing" actually "exist", or does it just sort of non-exist?

Nobody knows the answer (of course, he's the only one who would.)

90 posted on 06/30/2004 2:21:14 PM PDT by Doctor Stochastic (Vegetabilisch = chaotisch is der Charakter der Modernen. - Friedrich Schlegel)
[ Post Reply | Private Reply | To 88 | View Replies]

To: VadeRetro
The important thing is that science has changed its story again, thus proving right all the people who say science is wrong.

Hardly, that is the nature of science. New observations contradict old theories and lead, eventually, to new ones. The important thing is the observations.

91 posted on 06/30/2004 2:21:21 PM PDT by El Gato (Federal Judges can twist the Constitution into anything.. Or so they think.)
[ Post Reply | Private Reply | To 40 | View Replies]

To: COUNTrecount

A fascinating experiment, but when we had to do it in Physics lab, they never labeled the frequency on the microwave unit, so we had to ask the lab T.A., Kenneth...


92 posted on 06/30/2004 2:21:29 PM PDT by mikrofon (Not a physicist, but played one at a university for a year or so)
[ Post Reply | Private Reply | To 79 | View Replies]

To: Doctor Stochastic
There have been more than one [natural fission reactor]. There was another in what is now called Brazil.

Thanks, Dr. Stochastic! Did you also know geckos reproduce parthenogenetically?

93 posted on 06/30/2004 2:23:17 PM PDT by NutCrackerBoy
[ Post Reply | Private Reply | To 86 | View Replies]

To: The_Victor
Bump for a later read when I have time to think.

Calvin and Hobbes are laying on small hill on a warm afernoon, lazily watching the clouds drift by.

Hobbes: "I just lay here and think and think...and then I wake up."

94 posted on 06/30/2004 2:24:02 PM PDT by yankeedame ("Born with the gift of laughter & a sense that the world was mad.")
[ Post Reply | Private Reply | To 10 | View Replies]

To: null and void
Looser!

Ahh! Ahh! Personal attack! Vitriol! DAMN you tree-worshipping heathens to HELL! I'm not looser!

It's also a known fact that I win the debate when you misspell "loser", despite your false, unprovable, devil "math".

As I often tell PatrickHenry: FEEL the burn of my scalding, undefeatable logic!

95 posted on 06/30/2004 2:25:10 PM PDT by Shryke (Never retreat. Never explain. Get it done and let them howl.)
[ Post Reply | Private Reply | To 85 | View Replies]

To: Shryke
FEEL the burn of my scalding, undefeatable logic!

Yow!

96 posted on 06/30/2004 2:28:01 PM PDT by NutCrackerBoy
[ Post Reply | Private Reply | To 95 | View Replies]

To: Poohbah
Two billion years ago, the interstellar highway patrol were a lot more strict.

But now, thanks to the Supreme Court....

97 posted on 06/30/2004 2:28:05 PM PDT by yankeedame ("Born with the gift of laughter & a sense that the world was mad.")
[ Post Reply | Private Reply | To 53 | View Replies]

To: Shryke
As I often tell PatrickHenry: FEEL the burn of my scalding, undefeatable logic!

Logic is the devil's tool. I am impervious to its effects.

98 posted on 06/30/2004 2:28:12 PM PDT by PatrickHenry (Felix, qui potuit rerum cognoscere causas.)
[ Post Reply | Private Reply | To 95 | View Replies]

To: Ichneumon
Can "nothing" actually "exist", or does it just sort of non-exist?

Um, that's a toughie. I don't have my required amoount of JB to correctly answer that question. Therefore, I'll settle for labeling you a.....blasphemer!

Take that.

99 posted on 06/30/2004 2:28:22 PM PDT by Shryke (Never retreat. Never explain. Get it done and let them howl.)
[ Post Reply | Private Reply | To 88 | View Replies]

To: PatrickHenry
I think he deduced it as a consequence of Maxwell's equations.

While you can deduce the speed of light from Maxwell's equations, it's something of a trick, and doesn't get into the notion that it must be the same for all observers regardless of relative motion. Eisten started with the speed of light being constant for all observers, and deduced that is was also the maxium possible speed, and that E=mc2. The observations that suggested this assumption were the Michelson-Morely eperiments that attempted to deduce the "true" motion of the earth through the "ether" by measuring differences in the speed of light in different directions. No difference was found.

100 posted on 06/30/2004 2:28:28 PM PDT by El Gato (Federal Judges can twist the Constitution into anything.. Or so they think.)
[ Post Reply | Private Reply | To 66 | View Replies]


Navigation: use the links below to view more comments.
first previous 1-5051-100101-150151-200 ... 251-264 next last

Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.

Free Republic
Browse · Search
News/Activism
Topics · Post Article

FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson