[time-nuts] A small piece on HP's hydrogen maser in 1968

[Tim Shoppa]

"Gravity Probe A" used Hydrogen Masers to verify gravitational rate change.
1976 and suborbital, so not exactly the same as "Red Shift" mentioned in
the HP note.

I myself participated in a variation of Pound-Rebka-Snider (Mossbauer
nuclear physics techniques) in the 1980's.


On Mon, Feb 24, 2014 at 7:53 PM, Jim Lux <jimlux at earthlink.net> wrote:

> On 2/24/14 8:17 AM, Poul-Henning Kamp wrote:
>
>> In message <CAA-F0u_jBZ5dyB+hacMwFPkz6VhFo7arZ+
>> JpsmhrT9Uss2nWPQ at mail.gmail.com>
>> , Pete Lancashire writes:
>>
>>  http://www.hp.com/hpinfo/abouthp/histnfacts/
>>> publications/measure/pdf/1968_09.pdf
>>>
>>> pages 8 & 9
>>>
>>
>> As far as I know, those satellites never made it to orbit ?
>>
>
> Wasn't that Gravity Probe B.. which finally launched in 2004, and had
> equivocal results.
>
>
>
>
>> Also:  You can just see the writer twist his brain in order to get
>> to that final punch-line :-)
>>
>>
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