11th January 2007 - 09:59 PM
Oh, I see, now I'm Pupamancur too? Am I still dad1 as well? This is certainly one of the sillier tactics your trying so hard to hide behind.
You know, I've looked at some of your other posts, and you don't seem obviously stupid as you are here. I think we're back to the bat$#*t crazy theory. See, my theory is that you are so afraid to be wrong, you need to justify the number of people who are showing you how you are wrong by claiming they are the same person. "Surely," you say to yourself, "there can't be this many people saying I'm wrong, because I ?!"
It would also explain your very selective quote of your site to avoid the fact that the cesium fountain atomic clock is essentially the same as the older cesium thermal beam clock with respect to how they measure time: They measure the population excited cesium atoms excited by a microwave source tuned by a quartz clock.
See, here, also from the site you cite, and quote:
...Atoms can change energy levels by absorbing or emitting a photon of light with a frequency that is close to their resonant frequency. On their flight upwards, the atoms pass through a laser beam with a frequency close to one of cesium's resonant frequencies. Some atoms undergo a transition between energy levels so that all atoms are at the same energy level F=4,mF=0 before entering the microwave cavity...
...The atoms continue and pass through the microwave cavity, are in free flight above it for approximately 0.5 s, and are then pulled back down under the force of gravity. During each of the two passages through the microwave cavity, the atoms interact with microwaves of frequency is 9192631770 Hz After passing through the cavity a second time (on the way down), almost all of the atoms have made the transition into the F=3, mF=0 state...
Below the microwave cavity, the descending atoms are probed with several laser beams. The lasers cause the atoms to change atomic states and fluoresce (emit light). The fluorescence photons are detected by a photodiode and are used to build up the clock signal. When all the atoms have undergone the transition into the desired state, the signal is at a maximum. The intensity of the signal is used to correct the frequency of the microwaves in the cavity....
Where does the time signal come from?
The time signal comes from an ultra-stable oscillator, in our case a quartz crystal (with a frequency of 5 MHz), that is part of the loop shown in the diagram [ below ] This signal is multiplied using a frequency multiplier to generate hyper frequencies, or microwaves. The microwaves irradiate the atoms as they pass through the microwave cavity. The atoms' response depends on the microwave frequency as is shown on the diagram on the lower right. When the frequency of the microwave radiation is perfectly tuned to cesium's transition frequency (o), the atoms' response is maximized. By slightly modulating the microwave frequency, the atoms' response to a range of known frequencies can be determined. Each time the atoms respond to the microwave radiation, an error signal can be constructed and sent via a feedback loop to stabilize the local oscillator at the right frequency. Thus, the fountain and quartz crystal work in conjunction to provide the frequency standard for the second and the number of seconds are counted by a registering device.
Besides telling you that the clock measures time by measuring the population of excited cesium atoms which is used to correct a quartz clock, as I've been saying, you may also note that in referring to the vertical movement, the times are very vague. Be sorta odd that an international time standard has such flippant measurements for the time of flight if the time of flight was what was being measured.
Soooo... you're dishonest, a pathological liar, or have no idea what you are talking about; which is it?
I'll also point out that the atomic clocks used in the Hafele-Keating experiment (flying them around in jetliners, the experiment you've been referring to) were the older thermal beam clocks (the beams move horizontally) not the newer fountain clocks.
Game. Set. Match. There is nothing more you can say about this, you lose, and you're welcome for the edification. So you were wrong about the clocks, and thus your understanding about their use in testing relativity. That's okay; however your dogged insistence on being a fool isn't. Which I now also find pitiful and sad whereas before I was just contemptuous. So just admit you were wrong and apologize, and all this will all be behind you.