Orthogonal group Updated +Created
Wave equation Updated +Created
Trinity (nuclear test) Updated +Created
Plutonium-based.
Its plutonium was produced at Hanford site.
Video 1.
Trinity Test Preparations by AtomicHeritage (2016)
Source. Appears to be a compilation of several videos, presumably each with their own separate LA-UR, though these are not noted. Credited: "Video courtesy of the Los Alamos National Laboratory Archives", TODO how to search that archive online?
Video 2.
Trinity: Getting The Job Done
. Source. Good video, clarifies several interesting technical points:
Park Tool Updated +Created
Political film Updated +Created
by The New Republic
Novel result Updated +Created
Liquid helium Updated +Created
4 K. Enough for to make "low temperature superconductors" like regular metals superconducting, e.g. the superconducting temperature of aluminum if 1.2 K.
Contrast with liquid nitrogen, which is much cheaper but only goes to 77K.
Isometry group Updated +Created
The group of all transformations that preserve some bilinear form, notable examples:
Patent Updated +Created
Figure 1.
User-operated amusement apparatus for kicking the user's buttocks figure 5
. Source.
The Sims Updated +Created
A young Ciro Santilli really liked this game, the way it makes you feel.
Circulatory system Updated +Created
Democratic Party (United States) Updated +Created
pdftk Updated +Created
Extract certain pages of a PDF:
pdftk input.pdf cat 2-4 output out1.pdf
Rust library Updated +Created
Course of the University of Oxford Updated +Created
The course outline is given in a "handbook", a one or more PDF files that contain what people will learn and other practicalities. There is a full list of handbooks at: www.ox.ac.uk/students/academic/guidance/undergraduate/handbooks, but many of them are closed. The system is so closed that even the fucking course list is closed, e.g. all links at: www2.physics.ox.ac.uk/students/undergraduates are closed. Insane.
Demographics of Brazil Updated +Created
Media company Updated +Created
Metric space Updated +Created
Canonical example: Euclidean space.
Gallium compound Updated +Created

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