Hi folks - Here is the Friday Element Quiz Answer:
The Question:
This element is one of the least abundant and most expensive on the
planet. Only 40 tons/year of this element is used but the commercial value
is $300 million/year. This element is associated with cathode ray tubes.
What element is being described?
The Answer
The element is Europium (Eu). In the 1950s, the only red phosphors for
CRTS were ZnCdS:Ag and ZnPO4:Mn which were not ideal for converting high
energy electrons to red light. In the 1960s, YO:Eu and YVO4:Eu phosphors
were discovered. The Eu based materials produce a sharp, nearly
monochromatic red that is just at the right frequency to match the human
eye's red color receptors. No other material has been discovered yet that
matches what the Eu based materials can do.
And I thought this was going to be a tough quiz. The quiz winner is a
split this week as both Brian Ellis and Tom Carroll sent me the correct
answer at the same time. So Clumpy has elected to stay in Germany with Tom
and Kloumpios is heading back to Cyprus to work for Brian (and see his
relatives.
So far Clumpy and Kloumpios have:
Week 1 Lamar Young, SCS Coatings
- accomplished nothing (drank lots of coffee)
Week 2 Bev Christian, RIM
- conducted REACH material testing
Week 3 Drew Meyer, Benchmark Electronics Inc.
- Solderability testing and mowed the lawn
Week 4 Ian Fox, Goodrich
- had an epic journey of travel
Week 4 Gary Ferrari, Garrick Global
- unknown
Week 5 Fredrick Miller, Astrolab
- unknown
Week 6 David Nelson, Raytheon
- Were tackling dummys for Dallas Cowboys
Week 7 Graham Collins, L3 Communications
- Cleaned gutters and painted window trim
Week 8 Bill Noel, ITT Geospatial Systems Division
- unknown
Week 9 Steve Gregory of RD Circuits
- unknown
Week 10 David Bealer of Watchfire Signs
- descaled the in-line wash machine! Ouch!
Week 11 Dick Krug of Sparton Corporation
- assisted with AS9100 quality management systems requirements audit
Week 12 Steve Creswick of Balanced Enterprise Solutions
- Acted as Steve's "go fer" due to a broken leg!
Week 13 Gebhard Neifer, Delphi
- conducted a plasma pre treatment Taguchi DOE for a sealing process
Week 14 Bev Christian, RIM
- assisted with a tin pest investigation/test
Week 15 Bev Christian, RIM
- assisted Bev shoveling snow
Week 16 David Bealer of Waatchfire Signs
- assisted with reflow profiling
Week 17 Brian Ellis, rumored to be retired
- assisted with rewiring the house, had a tractor accident and found
his cousin Kloumpios
Week 18 Denny Fritz, SAIC
- assisted with tin whisker inspection/examinations
Week 19 Graham Collins, L3 Communications
- assisted with scraping barnacles, boat paint and boat engine
maintenance
Week 20 Mark Woolley, PTRL Laboratory Avaya
- assisted with weather observations (70F to snow) and resolving
electrochemical migration failures
Week 20 Tom Carroll, Boeing Defense, Space and Security
- assisted with commercial aircraft galley inspection
Week 21 Brian Ellis, supposedly retired, and Tom Carroo, Boeing Defense,
Space and Security
- assisted with ?????????
- assisted with ????????
Everyone have a fun weekend.
Dave Hillman
Rockwell Collins
[log in to unmask]
______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please contact helpdesk at x2960 or [log in to unmask]
______________________________________________________________________
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 16.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
For additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|