Micro Bit getting started Updated 2025-07-16
When plugged into Ubuntu 22.04 via the USB Micro-B the Micro Bit mounts as:
/media/$USER/MICROBIT/
e.g.:
/media/ciro/MICROBIT/
for username ciro.
Loading the program is done by simply copying a .hex binary into the image e.g. with:
cp ~/Downloads/microbit_program.hex /media/$USER/MICROBIT/
The file name does not matter, only the .hex extension.
The back power light flashes while upload is happening.
Flashing takes about 10-15 seconds for the 1.8 MB scroll display hello world from microbit-micropython.readthedocs.io/en/v1.0.1/tutorials/hello.html:
from microbit import *
display.scroll("Hello, World!")
and the program starts executing immediately after flash ends.
You can restart the program by clicking the reset button near the USB. When you push down the program dies, and it restarts as soon as you release the button.
Microphone Updated 2025-07-16
Video 1.
Testing and Circuit for a Condenser microphone by RSD Academy (2018)
Source.
Not very numerical, but shows a simple working breadboard circuit and an oscilloscope. He whistles with his mouth to get a pretty pure frequency.
That type of microphone requires a bias voltage. The circuit is in Ciro's ASCII art circuit diagram notation:
DC_9---R_10k--+--MICROPHONE--+--G
              |              |
              +-------V------+
Video 2.
Soundwaves on an oscilloscope by Animated Science (2015)
Source. Dude speaking to microphone. Some analysis of how different sounds look like. No circuit diagram.
Replication crisis Updated 2025-07-16
Of course, if academic journals require greater reproducibility for publication, then the cost per paper increases.
However, the total cost has to be smaller than the cost everyone who reads the paper spends to reproduce, no?
The truth is, part of the replication crisis is also due to research groups not wanting to share their precious secrets with others, so they can keep ahead of the publication curve, or maybe spin off a startup.
And when it comes to papers, things are even crazier: big companies manage to publish white papers in peer reviewed journals.
Ciro Santilli wants to help in this area with his videos of all key physics experiments project idea.
Cool initiative. Papers that do not share source code should be banned from peer reviewed academic journals.
math.stackexchange.com/questions/2382011/computational-complexity-of-modular-exponentiation-from-rosens-discrete-mathem mentions:
can be calculated in:
Remember that and are the lengths in bits of and , so in terms of the length in bits and we'd get:
Computational physics Updated 2025-07-16
The intersection of two beautiful arts: coding and physics!
Computational physics is a good way to get valuable intuition about the key equations of physics, and train your numerical analysis skills:
Microwave transmission for trading Updated 2025-07-16
Finance is a cancer of society. But I have to admit it, it's kind of cool.
Video 1.
Lasers Transmit Market Data and Trade Execution by Anova Technologies (2014)
Source. Their system is insane. It compensates in real time for wind movements of towers. They also have advanced building tracking for things that might cover line of sight.
Computer security Updated 2025-07-16
As mentioned at Section "Computer security researcher", Ciro Santilli really tends to like people from this area.
Also, the type of programming Ciro used to do, systems programming, is particularly useful to security researchers, e.g. Linux Kernel Module Cheat.
The reason he does not go into this is that Ciro would rather fight against the more eternal laws of physics rather than with some typo some dude at Apple did last week and which will be patched in a month.
Coulomb's law Updated 2025-07-16
Static case of Maxwell's law for electricity only.
The "static" part is important: if this law were true for moving charges, we would be able to transmit information instantly at infinite distances. This is basically where the idea of field comes in.
Video 1.
Coulomb's Law experiment with torsion balance with a mirror on the balance to amplify rotations by uclaphysics (2010)
Source.

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