November 26th, 2016
Beckman DB-G Grating Spectrophotometer, Cat NO. 1403.
Links: Grating Spectrophotometer DB GT (1961), University of Queensland Physics Museum
Bulbs:
E 871 (3 leads, HID, for UV)
GE 2331 (visible, 5.9V, 4.66A, 25W)
photomultiplier RCA IP28A, 69-04 (Anode supply: 1250V. Voltage between dynode No9 and anode: 250V. D-C anode current: 2.5ma. Ambient temperature: 75 Deg C. Package: 1-5/16″ D x overall length 3-11/16″ long. Seated height 3-1/8″ long. base: 11 pin plug-in with socket and 30″ cable. Note: Specification sheet available. Maybe replaced with 931A, average anode characteristics are the same.)
Photomultiplier board:
Vacuum tubes:
5654
12BH7A
Main board:
Adams and Westlake Mercury Wetted Contact Relay – MWSL-15093-1B
Vacuum tubes (all filaments lighted):
12BH7a
6973
6EM5
6AX5
85A2/0G3
12AX7
Posted in Uncategorized | No Comments »
November 13th, 2016
Posted in links | No Comments »
October 5th, 2016
Harry Truman, 1952
I’ve seen it happen time after time. When the Democratic candidate allows himself to be put on the defensive and starts apologizing for the New Deal and the fair Deal, and says he really doesn’t believe in them, he is sure to lose. The people don’t want a phony Democrat. If it’s a choice between a genuine Republican, and a Republican in Democratic clothing, the people will choose the genuine article, every time; that is, they will take a Republican before they will a phony Democrat, and I don’t want any phony Democratic candidates in this campaign.
But when a Democratic candidate goes out and explains what the New Deal and fair Deal really are–when he stands up like a man and puts the issues before the people–then Democrats can win, even in places where they have never won before. It has been proven time and again.
We are getting a lot of suggestions to the effect that we ought to water down our platform and abandon parts of our program. These, my friends, are Trojan horse suggestions. I have been in politics for over 30 years, and I know what I am talking about, and I believe I know something about the business. One thing I am sure of: never, never throw away a winning program. This is so elementary that I suspect the people handing out this advice are not really well-wishers of the Democratic Party.
The Post’s Jane Ridley tells why she was staunchly anti-vax until she had a frightening wake-up call
How Trump Took Hate Groups Mainstream. The full story of his connection with far-right extremists. by Sarah Posner and David Neiwert
Profile of Chicago school system head Forrest Claypool–the guy who sold CTA fare system Ventra to a private company.
A Science Fiction Tasting Menu for the As Yet Uninitiated (not books I would pick, but some interesting comments)
Posted in links | No Comments »
July 19th, 2016
Posted in links | No Comments »