Oh goody, plenty of microsections to do on some long term thermal cycle samples so that will keep them busy for the week
And a happy new year to all in TechNet land
Cheers
Ian
Ian Fox
Electronics Materials and Process Specialist – Rolls-Royce Control Systems
Tel: +44 (0) 121 273 3763
Mob: +44 (0) 7429 673874
E-mail: [log in to unmask]
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of David Hillman
Sent: 22 December 2017 16:31
To: [log in to unmask]
Subject: [TN] Element Quiz Answer
Here is the Element Quiz Question:
The Question:
Tools made of with a metal alloy containing this element do not create sparks when they strike a steel surface. Due to this element's properties, it has the best heat dissipation characteristics per unit weight. The element was used to uncovered the existence of the neutron. An early major application of this element was in brakes for military airplanes because of its exceptional ability to dissipate heat. This element is a p-type dopant in III-V compound semiconductors. Which element is being described?
The Answer:
The element is Beryllium (Be)! Beryllium copper tools do not create sparks when they strike a steel surface. Beryllium's high specific heat and thermal conductivity make the metal with the best heat dissipation characteristics per unit weight. A sample of beryllium was bombarded with alpha rays from the decay of radium in a 1932 experiment by James Chadwick that uncovered the existence of the neutron. Beryllium is widely used in materials such as GaAs and AlGaAs grown by molecular beam epitaxy. Acute beryllium disease in the form of chemical pneumonitis was first reported in Europe in 1933 and in the United States in 1943. A survey found that about 5% of workers in plants manufacturing fluorescent lamps in 1949 in the United States had beryllium-related lung diseases.
The winner of the quiz is Ian Fox and he will get the services of Clumpy and Kloumpios for the week of January 1st. The boys will be spending Xmas and the holidays with their families relaxing and having fun.
Doug and I would like to wish everyone a Merry Christmas, Happy New Year and a joyous holiday season that we hope is filled with family and fun. The TechNet community is a wonderful resource and we are privileged to be part of a great community of folks who gracious with their time/talents.
So far Clumpy and Kloumpios have done the following:
Past Quiz winners/tasks:
Week 1 Ravinder Ajmani, Western Digital
Week 1 Ron Feyereisen, SigmaTron Intl.
Week 2 Louis Hart, Compunetics
Week 3 Mark Kostinovsky, Schlumberger Ltd.
Week 3 John Burke
Week 4 Drew Meyer, Benchmark Electronics Week 5 No Winner - no correct responses!
Week 6 Bhanu Sood, NASA
Week 7 Keith Calhoun, Sopark Corp
Week 7 Ian Fox, Rolls Royce
Week 8 Leland Woodall
Week 8 David Bealer, SMT
Week 9 Tom Carroll, Boeing
Week 10 Louis Hart, Compunetics
Week 11 Tom Carroll, Boeing
Week 11 Scott Decker, UTAS
Week 12 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly Week 13 No Quiz, Week 14 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly Week 15 Bhanu Sood, NASA Week 16 John Maxwell Week 17 Leland Woodall Week 18 Leland Woodall Week 19 Tom Carroll, Boeing Week 20 Robert Kondner Week 21 Tom Brendlinger, ClearMotion Inc.
Week 22 Carl Van Wormer, Cipher Engineering LCC Week 23 Juliano Ribeiro, DATACOM Week 24 Gerry Gagnon, FLIR Commercial Systems Week 25 Graham Collins, Sunsel Systems Week 26 Joyce Koo, IPC International Week 26 Todd MacFadden, Bose Week 27 Bhanu Sood, NASA Week 28 Leland Woodall Week 29 Mordechai Kirshenbaum Week 30 Leland Woodall Week 31 Leland Woodall Week 32 Steve Gregory Week 33 Leland Woodall Week 34 Jerry Dengler, Pergamon Corp Week 35 Frank Kimmey, VeriFone Inc Week 36 Graham Collins, Sunsel Systems Week 37 Richard "Dean" Stadem Week 38 Leland Woodall Week 38 Tom Carroll Week 39 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly Week 40 Leland Woodall Week 41 Tom Carroll Week 42 Matthias Mansfeld, Mansfeld Elektronik PCB Design and Assembly Week 43 Joyce Koo
Week 44 Russell Kido, Practical Components
- How good are they in basketball? Maybe they can help my 8-year old daughter in her practice and her game. We will be having some warm temperatures next week, in the 80F range so they can pack light. They can assist me in visiting customers, might have to take them to the beach or Disneyland, finalize projects for year-end and keep my colleagues in line. Can I send them to my factory to assist in long lead-time delays on our products? (They can play the good guy, bad guy)
Week 45 Leland Woodall
-You're a good guy, Frank. I can use them both to help me prepare for Christmas. I'm so far behind it's not even funny!
Week 45 Frank Kimmey, VeriFone Inc
- Leland, take 'em both, I have to travel next week and the boys can be a pain when by themselves (like getting into mischief)
Week 46 Ian Fox
- assisted with ????
I hope everyone has a awesome week.
Dave Hillman
Rockwell Collins
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