Solutions of the Dirac equation by Ciro Santilli 35 Updated +Created
Video 1.
Quantum Mechanics 12b - Dirac Equation II by ViaScience (2015)
Source.
Frequency divider by Ciro Santilli 35 Updated +Created
In-order depth-first search by Ciro Santilli 35 Updated +Created
This is the order in which a binary search tree should be traversed for ordered output, i.e.:
  • everything to the left is smaller than parent
  • everything to the right is larger than parent
This ordering makes sense for binary trees and not k-ary trees in general because if there are more than two nodes it is not clear what the top node should go in the middle of.
This is unlike pre-order depth-first search and post-order depth-first search which generalize obviously to general trees.
Taylor expansion definition of the exponential function by Ciro Santilli 35 Updated +Created
The Taylor series expansion is the most direct definition of the expontial as it obviously satisfies the exponential function differential equation:
  • the first constant term dies
  • each other term gets converted to the one before
  • because we have infinite many terms, we get what we started with!
Artificial gene synthesis by Ciro Santilli 35 Updated +Created
Using de novo DNA synthesis to synthesize a genes to later insert somewhere.
Note that this is a specific application of de novo DNA synthesis, e.g. polymerase chain reaction primers is another major application that does not imply creating genes.
Coronavirus Replication Cycle by Ciro Santilli 35 Updated +Created
www.youtube.com/watch?v=zvuYJTL90J8&t=166s The Coronavirus Replication Cycle by Kevin Tokoph (2020)
Hadron by Ciro Santilli 35 Updated +Created
LeetCode by Ciro Santilli 35 Updated +Created
Platform as a service by Ciro Santilli 35 Updated +Created
Highly managed, you don't even see the Docker images, only some higher level JSON configuration file.
These setups are really convenient and cheap, and form a decent way to try out a new website with simple requirements.
Correspondence principle by Ciro Santilli 35 Updated +Created
Basically the same as classical limit, but more for quantum mechanics.
You aren't gonna need it by Ciro Santilli 35 Updated +Created
Sometimes you are really certain that something is a required substep for another thing that is coming right afterwards.
When things are this concrete, fine, just do the substep.
But you have to always beware of cases where "I'm sure this will be needed at some unspecified point in the future", because such points tends to never happen.
YAGNI is so fundamental, there are several closely related concepts to it:
Figure 1.
xkcd 2730: Code Lifespan
. Source.
Once upon a time, when Ciro Santilli had a job, he had a programming problem.
A senior developer came over, and rather than trying to run and modify the code like an idiot, which is what Ciro Santilli usually does (see also experimentalism remarks at Section "Ciro Santilli's bad old event memory"), he just stared at the code for about 10 minutes.
We knew that the problem was likely in a particular function, but it was really hard to see why things were going wrong.
After the 10 minutes of examining every line in minute detail, he said:
I think this function call has such or such weird edge case
and truly, that was the cause.
Nucleosome by Ciro Santilli 35 Updated +Created
Hydrogen sulfide chemosynthesis by Ciro Santilli 35 Updated +Created
CSS flex by Ciro Santilli 35 Updated +Created
  • css/flex.html: illustrates basic flex usage, including:
  • flex-grow: if there's space left, this determines how much extra space will be given to each.
  • flex-basis: the size the items want to be. But if there isnt' enough space, this can be cut up.
    Note that the minimal space required by children of the flex children cannot be necessarily cut up, and might lead things to overflow out of the container.
  • flex-shrink: if there's space missing, this determines how much extra space will be removed from each flex-basis
Other examples include:
That example calculates and displays the final widths via JavaScript, making it easier to understand the calculations being done.
Carbohydrate loading by Ciro Santilli 35 Updated +Created
The best Caetano Veloso songs by Ciro Santilli 35 Updated +Created
Federal University of São Carlos by Ciro Santilli 35 Updated +Created

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