On 09/30/2010 06:14 AM, jimlux wrote:
Magnus Danielson wrote:
Doppler effects is much more important, and it's effects is being
treated regularly, such as when talking in the GSM phone while driving
the car...
Hmm.. I think crystal oscillator frequency variation in the phone is a
bigger
Magnus Danielson wrote:
On 09/30/2010 06:14 AM, jimlux wrote:
Magnus Danielson wrote:
Doppler effects is much more important, and it's effects is being
treated regularly, such as when talking in the GSM phone while driving
the car...
Hmm.. I think crystal oscillator frequency variation in
On 9/30/2010 8:43 AM, jimlux wrote:
how stable?
The parts are generally ~ 1 ppm over temp and another ppm or two aging.
I'm sort of curious, I wonder what sort of temperature range
cellphones are expected to really work over..
depends on the vendor to some extent. Not all standards spec
Actually, as I think about this, it will be impossible to calibrate another
device unless one knows the vertical displacement between the standard and the
DUT AND a suitably adequate (read: easy to use) algorithm for accounting for
the
effect of gravity can be developed.
Jeff
Jeffrey K.
29, 2010 12:55:59 PM
Subject: Re: [time-nuts] Next Generation Time/Frequency Standards May Require
Provisions Preventing Vertical Displacement
Hi,
See the following:
http://www.nature.com/news/2010/100923/full/news.2010.487.html
Of course, we're probably a few years away from seeing
On 09/29/2010 06:56 PM, Jeffrey Okamitsu wrote:
Actually, as I think about this, it will be impossible to calibrate another
device unless one knows the vertical displacement between the standard and the
DUT AND a suitably adequate (read: easy to use) algorithm for accounting for the
effect of
Subject: Re: [time-nuts] Next Generation Time/Frequency Standards May Require
Provisions Preventing Vertical Displacement
On 09/29/2010 06:56 PM, Jeffrey Okamitsu wrote:
Actually, as I think about this, it will be impossible to calibrate another
device unless one knows the vertical displacement
More importantly, does this impose an upper limit on data transport speed
over networks, in particular wireless networks? If and when one produces
the network technology that would demand the accuracy and precision of
these new standards, if one object is moving relative to the other,
On 09/29/2010 07:17 PM, Jeffrey Okamitsu wrote:
More importantly, does this impose an upper limit on data transport speed over
networks, in particular wireless networks?
No, not really.
If and when one produces the network
technology that would demand the accuracy and precision of these new
Jeffrey Okamitsu wrote:
More importantly, does this impose an upper limit on data transport speed over
networks, in particular wireless networks? If and when one produces the network
technology that would demand the accuracy and precision of these new
standards, if one object is moving
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