Acousto-optic modulator Updated +Created
An optical multiplexer!
Video 1.
Control Light with Sound! by Les' Lab (2021)
Source.
Xun flute Updated +Created
Mathematician Updated +Created
Poet, scientists and warriors all in one? Conquerors of the useless.
A wise teacher from University of São Paulo once told the class Ciro Santilli attended an anecdote about his life:
I used to want to learn Mathematics.
But it was very hard.
So in the end, I became an engineer, and found an engineering solution to the problem, and married a Mathematician instead.
It turned out that, about 10 years later, Ciro ended up following this advice, unwittingly.
Figure 1.
xkcd 435: Fields arranged by purity
. Source.
Discrete mathematics Updated +Created
Activism Updated +Created
Functional programming is a subset of imperative programming Updated +Created
Ciro Santilli thinks imperative programming is just a superset of functional programming where you can have state.
C and C++: OK, you're old before the Internet and compiled, forgiven.
Python: OMG, please, just make it work!!! Your are interpreted!!! You are a hot web technology!!! Node.js and Ruby are doing just fine, and Ruby is not newer than you!!! See also: pip.
Acts of the Apostles Updated +Created
Luke Dashjr Updated +Created
Accounts:
Author of the prayer side of the Prayer wars.
According to LinkedIn he studied at the Benedictine College in Kansas.
TODO is his real birthname "Luke Dash Jr."?
Apparently he had his coins stolen in January 2023, then worth $3.5m: blog.cryptostars.is/luke-dashjr-an-original-bitcoin-developer-loses-all-his-btc-88421c395ce5p...
www.reddit.com/r/Buttcoin/comments/4936kw/lukejr_is_a_seriously_a_super_crazy_person_quotes/ "Luke-Jr is a seriously a super crazy person quotes gigathread." (2016) on Reddit. Apparently he has some fun views of life.
Poincaré sphere Updated +Created
A more photon-specific version of the Bloch sphere.
In it, each of the six sides has a clear and simple to understand photon polarization state, either of:
  • left/right
  • diagonal up/diagonal down
  • rotation clockwise/counterclockwise
The sphere clearly suggests for example that a rotational or diagonal polarizations are the combination of left/right with the correct phase. This is clearly explained at: Video "Quantum Mechanics 9b - Photon Spin and Schrodinger's Cat II by ViaScience (2013)".
Figure 1.
Poincare sphere
. Source.
activatedgeek/LeNet-5 use ONNX for inference Updated +Created
Now let's try and use the trained ONNX file for inference on some manually drawn images on GIMP:
Note that the images must be drawn with white on black. If you use black on white, it the accuracy becomes terrible. This is a good very example of brittleness in AI systems!
Figure 1.
Number 9 drawn with mouse on GIMP by Ciro Santilli (2023)
We can try the code adapted from thenewstack.io/tutorial-using-a-pre-trained-onnx-model-for-inferencing/ at python/onnx_cheat/infer_mnist.py:
cd python/onnx_cheat
./infer_mnist.py lenet.onnx infer_mnist_9.png
and it works pretty well! The protram outputs:
9
as desired.
We can also try with images directly from Extract MNIST images.
for f in /home/ciro/git/mnist_png/out/testing/1/*.png; do echo $f; infer.py $f ; done
and the accuracy is great as expected.
Administrative counties of England Updated +Created
Ad hominem Updated +Created
Systems biology Updated +Created
Studies biology from a more global point of view, if putting all little pieces of an organism make up the final biological function.
Adjacenty list Updated +Created
Admissible prime k-tuple Updated +Created
Adjacency list Updated +Created
Adenine methylation Updated +Created
Adenine Updated +Created
Adenosine diphosphate Updated +Created
Advanced Encryption Standard Updated +Created

Unlisted articles are being shown, click here to show only listed articles.