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announcements [2009/04/20 23:37] – tateannouncements [2020/03/06 09:12] (current) – external edit 127.0.0.1
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 ====== Old Announcements ====== ====== Old Announcements ======
 Current announcements are on the [[start|syllabus]] page. Current announcements are on the [[start|syllabus]] page.
-===== 4/20/09 ===== 
-Posted the notes on reciprocal lattices under L9.  See also the Brillouin zone link on the "links" page. 
-===== 4/??/09 ===== 
-I made a mistake in my posting of the grades for Hwk 2. I have reposted them on BB. Everyone should now have a higher number than previously posted. I apologize for the error.  
-===== 4/10/09 ===== 
-I reloaded L6.pdf after class today having fixed the axis problem on the molecular orbitals graphs.  I also added photos of Bloch and Brillouin for cultural interest. 
-===== 4/6/09 ===== 
-Homework 2 is posted 
-===== 4/2/09===== 
-Thanks to Tevian Dray, wiki-guru and computer-whiz extrordinaire, the difficulty accessing the pdf files is resolved (at least from all the browsers I could check).  If you have any problems accessing material from this site, please email me. 
-===== 4/1/09 ===== 
- Thursday April 2, 2009, 4pm WGR 304 - extra help session on qm formalism.</font> 
  
-===== 3/31/09 ===== +=== 5/20/2019 === 
-There is some difficulty accessing the pdf files from different browsers and different machines. It works from all macs. Works from a PC with Internet explorer but not with Firefox. As an interim fix, I have loaded the files onto Blackboard. Homework is under "assignments", lectures under "course content". +Today is [[http://www.worldmetrologyday.org/|World Metrology Day]], and we have a new kilogram standard!  Read about it at the [[https://www.nist.gov/si-redefinition|National Institute of Standards and Technology (NIST)]] site. Here is a [[https://www.vox.com/science-and-health/2019/5/17/18627757/kilogram-redefined-world-metrology-day-explained|Vox article]] that does a reasonable job of discussing it for the layperson (but note the error in the discussion of the units of Planck's constant!).
  
-===== 3/20/09 ===== +=== 5/20/2019 === 
-Physics graduate students: The comp exam is to be held on the first Monday of class.  You are excused from class if you are taking the exam, but please let me know.  I will arrange a make-up lecture for you at your convenience, and I will post slides.===== Level 2 Headline =====+Some solid state physics in the news - ice-XVIII. 
 +[[https://physicstoday.scitation.org/do/10.1063/PT.6.1.20190517a/full/|https://physicstoday.scitation.org/do/10.1063/PT.6.1.20190517a/full/]]
  
 +=== 5/12/2019 ===
 +The first part of hwk 5 has been posted.
 +
 +=== 5/6/2019 ===
 +The final exam will be held at the advertised time of Thursday June 13 in Weniger 304. Please bring a prepared sheet of notes, one side of one 8.5 x 11" paper.
 +
 +=== 5/2/2019 ===
 +Midterm from 3-4 Friday May 3 in Weniger 304. Please bring a prepared sheet of notes, one side of one 8.5 x 11" paper.
 +
 +=== 4/24/2019 ===
 +I uploaded a new version of the density of states notes to try to make clear the distinction between D(k) and D(E). 
 +
 +=== 4/17/2019 ===
 +[[https://www.cambridge.org/core/journals/mrs-bulletin/news/rare-earth-topological-insulator-reveals-its-thermoelectric-properties|Here]] is some fun news about topological insulators with good thermoelectric properties. 
 +
 +=== 4/16/2019 ===
 +There is a new worksheet on the 4/15 day under "assignments" - you don't need t oturn it in, but it summarizes what we did in class and you should be able to construct it for the molecular orbitals of chain of any number of atoms.
 +
 +=== 4/15/2019 ===
 +There will be a make-up class on Tuesday 4/16 at 8am for those of you who will miss Mon 4/15 for the lunch with Dr. Wineland.
 +
 +=== 4/4/2019 ===
 +The [[https://physics.oregonstate.edu/dirac-electrons-one-two-and-three-dimensions|physics colloquium on Monday 4/8 at 4pm in Wngr 328]] (right after our class) is of interest.  Prof. Vikram Deshpande of University of Utah will talk about topological insulators, 2D materials and carbon nanotubes.
 +
 +=== 3/29/2019 ===
 +The comprehensive exam for physics graduate students overlaps PH575 class time on Monday 4/1. In the Monday 4/1 class, there will be a review of mathematical concepts used in the class that should not be necessary for the physics grads (though I will repeat the class upon request). Others should attend. The first "official" class is on Wednesday 4/3. 
 +=== 2/28/2019 ===
 +2019 is the [[https://www.iypt2019.org/|International Year of the Periodic Table]], celebrating 150 years since Mendeleev discovered the period system. [[http://www.nisenet.org/events/other/IYPT2019|Explore this amazing scientific achievement]].

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