-Original Message-
From: time-nuts On Behalf Of Julien Goodwin
Sent: Wednesday, October 31, 2018 2:54 PM
To: Discussion of precise time and frequency measurement
; Joe Leikhim
Subject: Re: [time-nuts] MEMS oscillators
Reminds me a little of the crazy Eidophor projectors.
"An Eid
Thanks that was a very cool presentation. Amazing that they made a
sustainable commercial success out of something so wildly impractical.
And the fact they made incremental improvements on the concept instead
of giving it up for some different scheme is amazing.
I got a sense that the
On Thu, 1 Nov 2018 08:54:27 +1100, you wrote:
>"An Eidophor was a television projector used to create theater-sized
>images. The name Eidophor is derived from the Greek word-roots eido
>and phor meaning 'image' and 'bearer' (carrier). Its basic technology
>was the use of electrostatic charges
Reminds me a little of the crazy Eidophor projectors.
"An Eidophor was a television projector used to create theater-sized
images. The name Eidophor is derived from the Greek word-roots ‘eido’
and ‘phor’ meaning 'image' and 'bearer' (carrier). Its basic technology
was the use of electrostatic
This is fascinating. I am a bit skeptical if this actually happened.
I had an opportunity to meet an engineer that was involved with early
HDTV development. Apparently early in his career he invented a color
projection CRT for cinema. It had some sort of target inside of it (I
think plastic)
jim...@earthlink.net said:
> Why would a MEMS resonator care about what gas it is surrounded by.
It might care that it is surrounded by some gas. If the container is mostly
empty, the He could be the only gas, so the pressure could go from x to 10x.
It does sound unlikely to me, but not
Helium is lower density, a feature used to reduce turbulence in patients
with airway stenosis. Perhaps the lower density changes the resonant
frequency of the MEMS oscillators. (Though the penetration and
concentration are rather suspect in this description.)
Paul Alfille
On Tue, Oct 30, 2018 at
Hi
More than sketchy, it sounds a bit crazy.
MEMS are not a lot different than any IC in that you can get packaging issues.
Put them
in a high pressure “bomb” test and you will see the same issues that you do on
any IC.
The gotcha is that an IC is die coated and a MEMS oscillator likely is
On 10/30/18 3:50 AM, Adrian Godwin wrote:
How sensitive to atmospheric environment are MEMs oscillators ?
https://www.reddit.com/r/sysadmin/comments/9si6r9/postmortem_mri_disables_every_ios_device_in/
It gets closer to time-nuts territory in the earlier discussion - see
captaincool's
How sensitive to atmospheric environment are MEMs oscillators ?
https://www.reddit.com/r/sysadmin/comments/9si6r9/postmortem_mri_disables_every_ios_device_in/
It gets closer to time-nuts territory in the earlier discussion - see
captaincool's contribution some way down :
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