Continental drift by Ciro Santilli 37 Updated 2025-08-08
Video 1.
How Plate Tectonics was Discovered (1970)
Source. Produced by Simon Campbell-Jones
Ubuntu 21.10 by Ciro Santilli 37 Updated 2025-07-16
GDM crashes sometimes when switching windows right after opening a new window: bugs.launchpad.net/ubuntu/+source/gdm/+bug/1956299
SARS-CoV-2 S protein by Ciro Santilli 37 Updated 2025-07-16
Spike.
Nucleocapsid phosphoprotein, sticks to the RNA inside.
www.nature.com/articles/s41467-020-20768-y mentions functions:
  • helps pack the viral RNA into the capsule
  • also has a side function in immune suppression
Course outline given:
Non-relativistic QFT is a limit of relativistic QFT, and can be used to describe for example condensed matter physics systems at very low temperature. But it is still very hard to make accurate measurements even in those experiments.
Defines "relativistic" as: "the Lagrangian is symmetric under the Poincaré group".
Mentions that "QFT is hard" because (a finite list follows???):
There are no nontrivial finite-dimensional unitary representations of the Poincaré group.
But I guess that if you fully understand what that means precisely, QTF won't be too hard for you!
Notably, this is stark contrast with rotation symmetry groups (SO(3)) which appears in space rotations present in non-relativistic quantum mechanics.

There are unlisted articles, also show them or only show them.