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April 8, 2021 Archives
Thursday, April 8, 2021
CONTEXT: More on Muons: Brian Keating and Dan Hooper of Fermilab Discuss the g−2 Experiment
Here are how two different kinds of theoretical calculations fit with the experimental results.
this is a good visual on Fermilab Muon g-w results, illustrating how R-ratio method of calculating expected results from standard model implies new physics.
— Nathan Taylor (@ntaylor963) April 8, 2021
But another technique, lattice QCD, shows results may be what standard model predicts.https://t.co/AM45IKAAvc pic.twitter.com/TfPEhPJ7iQ
Posted at
14:43
TRACKING WITH CLOSEUPS: Dimethylmercury
This makes me shiver just looking at it. Ten grams of dimethyl mercury is enough to. . .well. . . https://t.co/CyE9ubkrdn
— Derek Lowe (@Dereklowe) April 7, 2021
Here is more about dimethylmercury. Absorption of as little as 0.1 millilitre can be fatal, and the liquid can permeate normal laboratory and surgical gloves within 15 seconds.
Posted at
14:12
CONTINUITY: “Census Sixty”—The Univac 1105 at the U.S. Census Bureau
This cheesy propaganda film about the 1960 U.S. census has some nice footage (around nine minutes in) of the UNIVAC 1105 vacuum tube computer used in that census and the FOSDIC microfilm scanner which replaced punching Hollerith cards from the data collected by census takers. The Census Bureau, which was a pioneer in punched card tabulation of data, was later one of the first to replace cards with optical document scanning.
Posted at
12:08