Immune response Updated 2025-07-16
Inflammation Updated 2025-07-16
Models of computation course of the University of Oxford Updated 2025-07-16
ORF1ab Updated 2025-07-16
Pangaea Updated 2025-07-16
Peripheral Updated 2025-07-16
Polarization of light Updated 2025-07-16
This section discusses the pre-photon understanding of the polarization of light. For the photon one see: photon polarization.
People were a bit confused when experiments started to show that light might be polarized. How could a wave that propages through a 3D homgenous material like luminiferous aether have polarization?? Light would presumably be understood to be analogous to a sound wave in 3D medium, which cannot have polarization. This was before Maxwell's equations, in the early 19th century, so there was no way to know.
Province of China Updated 2025-07-16
Stack Overflow link-only answer policy Updated 2025-07-16
The link will break, and the answer will lose. Or the person who summarizes inline will get more upvotes because people are lazy to click the link. Also, web archiving exists.
This is especially idiotic when it is a link to another post in Stack Overflow itself.
1922 Nobel Prize in Physics Updated 2025-07-16
Niels Bohr for the Bohr model.
1944 Nobel Prize in Physics Updated 2025-07-16
Age of Empires Updated 2025-07-16
Age of Empires II Updated 2025-07-16
Classification of second order partial differential equations into elliptic, parabolic and hyperbolic Updated 2025-07-16
One major application of this classification is that different boundary conditions are suitable for different types of partial differential equations as explained at: which boundary conditions lead to existence and uniqueness of a second order PDE.
Classification of simple Lie groups Updated 2025-07-16
A bit like the classification of simple finite groups, they also have a few sporadic groups! Not as spectacular since as usual continuous problems are simpler than discrete ones, but still, not bad.
Udacity Updated 2025-07-16
It is a shame that they refocused to more applied courses. This also highlights their highly "managed" approach to content creation. Their 2022 pitch on front page says it all:they are focused on the highly paid character of many software engineering jobs.
for as few as 10 hours a week, you can get the in-demand skills you need to help land a high-paying tech job
But one cool point of this website is how they hire tutors to help on the courses. This is a very good thing. It is a fair way of monetizing: e-learning websites must keep content free, only charge for certification.
AKS primality test Updated 2025-07-16
x86 Paging Tutorial TLB replacement policy Updated 2025-07-16
When TLB is filled up, older addresses are overwritten. Just like CPU cache, the replacement policy is a potentially complex operation, but a simple and reasonable heuristic is to remove the least recently used entry (LRU).
With LRU, starting from state:adding
valid linear physical
----- ------ --------
> 1 00003 00005
1 00007 00009
1 00009 00001
1 0000B 00003
0000D -> 0000A
would give: valid linear physical
----- ------ --------
1 0000D 0000A
> 1 00007 00009
1 00009 00001
1 0000B 00003
Internet privacy organizations Updated 2025-07-16
U-Math Updated 2025-07-16
Unlisted articles are being shown, click here to show only listed articles.