Ciro Santilli @cirosantilli 35

One cool thing we did in this procedure was to use magnetic separation with magnetic beads to further concentrate the DNA: Figure 1. "GE MagRack 6 pipetting.".

The beads are coated to stick to the DNA, which allows us to easily extract the DNA from the rest of the solution. This is cool, but bio people are borderline obsessed by those beads! Go figure!

Then we prepared the DNA for sequencing with the Oxford Nanopore specific part: Oxford Nanopore SQK-LSK109 Ligation Sequencing Kit.

Here some of the steps required a bit more of vortexing for mixing the reagents, and for this we used the VELP Scientifica WIZARD IR Infrared Vortex Mixer which appears to be quicker to use and not as strong as the Vortex Genie 2 previously used to break up the cells:

After all that was done, the DNA of the several 400 ml water bottles and hours of hard purification labour were contained in one single Eppendorf!

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Compton scattering  Updated 2025-03-28  +Created 1970-01-01

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Classic theory predicts that the output frequency must be the same as the input one since the electromagnetic wave makes the electron vibrate with same frequency as itself, which then irradiates further waves.

But the output waves are longer because photons are discrete and energy is proportional to frequency:

The formula is exactly that of two relativistic billiard balls colliding.

Therefore this is evidence that photons exist and have momentum.

Video 1.

Compton Scattering by Compton Scattering (2017)

Source. Experiment with a caesium-137 source.

Video 2.

L3.3 Compton Scattering by Barton Zwiebach (2017)

Source.

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Greek alphabet  Updated 2025-03-28  +Created 1970-01-01

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Unfortunately, physicists and mathematicians keep using Greek letters in their formulas, so we just have to learn them.

A helpful way to remember is to learn a bit of their history/pronunciation: Section "Historical correspondence between Latin and Greek".

To learn the greek letters if you have a base latin alphabet, you must learn the sound of each letter, and which Latin letters they correspond to.

Symbols that look like Greek letters but are not Greek letters:

nabla symbol

Is Ciro Santilli crazy (he is, but for this point specifically), or do many/most Greek letters represent the mouth position used in the pronunciation of the letter?

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Ciro's ASCII art circuit diagram notation  Updated 2025-03-28  +Created 1970-01-01

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This notation is designed to be relatively easy to write. This is achieved by not drawing ultra complex ASCII art boxes of every component. It would be slightly more readable if we did that, but prioritizing the writer here.

Two wires are only joined if + is given. E.g. the following two wires are not joined:

  |
--|--
  |

but the following are:

  |
--+--
  |

Simple symmetric components:

-, + and |: wire
AC: AC source. Parameters:
- Hz: frequency
- V: peak voltage
e.g.:
```
AC_1Hz_2V
```
If only one side is given, the other is assumed to be at a ground G.
C: capacitor
G: ground. Often used together with DC, e.g.:
```
DC_10---R_10---G
```
means applying a voltage of 10 V across a 10 Ohm resistor, which would lead to a current of 1 A
L: inductor
MICROPHONE. As a multi-letter symmetric component, you can connect the two wires anywhere, e.g.
```
---MICROPHONE---
```
or:
```
|
MICROPHONE
    |
```
SPEAKER
R: resistor
SQUID: SQUID device
X: Josephson junction

Asymmetric components have multiple letters indicating different ports. The capital letter indicates the device, and lower case letters the ports. The wires then go into the ports:

D: diode
- a: anode (where electrons can come in from)
- c: cathode
Sample usage in a circuit:
```
--aDc--
```
Can also be used vertically like aany other circuit:
```
|
a
D
c
|
```
We can also change the port order, the device is still the same due to capital D:
```
--cDa--

 |
Dac--

 |
Dca--

   |
--caD
```
DC DC source. Ports:
- p: positive
- n: negative
E.g. a 10 V source with a 10 Ohm resistor would be:
```
+---pDC_10_n---+
|              |
+----R_10------+
```
If only one side is given, the other is assumed to be at a the ground G. We can also omit p and m in that case and assume that p is the one used, e.g. the above would be equivalent to:
```
DC_10---R_10---G
```
If the voltage is not given, it is assumed to be a potentiometer.
T: transistor. The ports are sgTd:
- s: source
- g: gate
- d: gate
Sample usage in a circuit:
```
---+
   |
--sgTd--
```
All the following are also equivalent:
```
   |
   g
--sTd--

    |
--Tsgd--
   |
```
I: electric current source. Ports:
- s: electron source
- d: electron destination
V: Voltmeter. Ports:
- p: positive
- n: negative
If we don't need to specify explicit positive and negative sides, we can just use:
```
---V---
```
without any ports. This is notably often the case for AC circuits.
Optionaly, we can also add the sides as in:

Numbers characterizing components are put just next to each component with an underscore. When there is only one parameter, standard units are assumed, e.g.:

+-----+
|     |
C_1p  R_2k
|     |
+-----+

means:

a capacitor with 1 pico Faraday
a resistor with 2 k Ohms

Micro is denoted as u.

Wires can just freely come in and out of specs of a component, they are then just connected to the component, e.g.:

DC_10---R_10---G

means applying a voltage of 10 V across a 10 Ohm resistor, which would lead to a current of 1 A

If a component has more than two parameters, units are used to distinguish them when possible, e.g.:

AC_1kV_2MHz

means an AC source with:

1 kV voltage
1 MHz frequency

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Cosmic microwave background  Updated 2025-03-28  +Created 1970-01-01

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If you point a light detector to any empty area of the sky, you will still get some light.

The existence of this is quite mind blowing, since "there is nothing there emitting that light".

To make sense of how it is possible to see this light, you can think of the universe as the expanding raisin bread model, but it expands faster than light (thus the existence of the cosmological event horizon), so we are still receiving light form the middle, not the borders.

CMB is basically perfectly black-body radiation at 2.725 48 K, but it has small variations with variations of the order of 200 microKelvin: cosmic microwave background anisotropy.

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Ordinal ASCII art inscription  Updated 2025-03-28  +Created 1970-01-01

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This is a quick overiew of ASCII art ordinal inscriptions.

It was obtained by casually scrolling down the list of the largest text ordinal inscription on less until patience ran out.

Some of them are dedicated ASCII art inscriptions, others are just small highlights to other more important text like code.

Although tere is some element of commercialism in some those inscriptions, a bit like what is rampant in the images, some of them are honestly just cool and possibly novel.

Ordinal ruleset inscription collections:

Humongous surfers. These are very large ASCII arts, by far the largest on the chain. Being so large allows for shades of gray to be encoded on the average luminosith of individual letters:
- tx 0f29dab68e9898f9349ef4508908f7df48dc56577cfd94ff173dd2c1b29ad7a3 (240,300 bytes): surfer girl
  Figure 1.
  Surfer girl
  . Screenshot of the ordinals.com/inscription/0f29dab68e9898f9349ef4508908f7df48dc56577cfd94ff173dd2c1b29ad7a3i0 Ordinal ASCII art inscription as seen on Chromium 85.
- tx b256c850f8cab037d387d3db70643b79f5848565181b341de6c44f86307db9e7
- tx d0e090aeeb289e19b8c9ad71c00daa28367e9afc4593c89513e4f96abcda8ea5
- tx fb754df7b17c7b76a6508b5d4e29f89d55ada38cf1f75ca4d797c58f45b73cd1
- tx a7e6697781513bdeddada7c32b6200fb8499624664ba056f8318541b63f68c36

Michael Jackson Unicode art. Uses Unicode Braille characters. Marked "First Onchain Collection" and "Legends @ BTC" . Pretty cool design, the textures are quite cool and suggest glittering flying seat. Though if those ever sell, someone is going to get sued to Hell by MJ's estate!

1/12 tx 7e6c5f8ebb41604c79f2af60bb7af623c42b32afe4d7571ba81d7b9b44d33a2d
2/12 tx 8ac99472b865d01f8724ba23b6f79ca56d30b44fae0eb509984237b722b812c3
5/12 tx 74c94ceba91cf59de2740bcfa5bc2fdb3ea0d4499e73a12100ed365d25ae9061
7/12 tx 0360a10e67365ab8cc4e32f199c71cabf4fb6a08ca9773dd1d13d7f7936dcf99
8/12 tx 4814880f931db8aa59e1c2aba2c227e83d928d297cbe91978458b6d83e38ddfc

9/12 tx 909228c88176b65f5705ade5fa059030d4c646cacd171737af03ac965047fa82

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⠀⠀⠀⠀⠀⠀⠀⠐⠀⠀⠀⠀⠀⠀⠀⡀⠁⠀⢀⠀⠀⠡⠀⡐⠀⠈⡀⠀⠀⠀⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠂⠂⠀⠁⠀⠀⠀⠀⢠⣈⡇⠀⠠⠐⠠⢁⠢⣉⠆⡉⠴⣁⣈⡙⠜⠃⠄⡁⢂⠘⠆⣈⠡⠀⠐⢂⠡⠐⢂⠡⢐⠠⠉⡄⠰⢁⠊⠔⣉⠢⡑⢌⢂⠱⡀⢊⠄⡡⠠⢁⠂⠄⠡⠈⠄⠐⡀⠌⠀⠂⢀⠁⠀⢀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠂⠀⠀⡀⠁⠀⠈⠀⢀⠀⠐⠀⠀⡀⠀⠡⢀⠑⡀⠠⠁⠈⡀⠂⡀⠐⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠒⣠⣽⣿⠃⠀⠁⢂⠱⣂⠑⡌⡐⣍⢲⣀⡉⠉⠀⠁⠂⠴⡲⣌⠐⡀⠆⠀⠈⡄⢂⡉⠄⢊⠄⠂⠥⠐⣁⠊⢌⠒⡠⢃⠜⡠⢊⠤⢑⠠⠒⠠⢁⠂⠌⠠⠁⠌⡀⠡⢀⠐⠈⠀⠄⢀⠈⠀⠀⡀⠀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⠀⠀⠠⠐⠀⠀⢀⠠⠐⠀⠀⠀⠄⠠⠐⠠⠠⠁⠀⠰⢀⠑⠀⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠀⠈⢠⡜⣽⣿⣯⢡⠀⠈⠠⠑⠤⢣⠐⠱⠌⢧⡍⠁⠀⠀⠈⠀⠀⠉⣏⠓⡐⢈⠀⢁⠰⢀⠂⠜⠠⡈⠜⠠⡁⢂⠅⡊⠤⠑⡌⢢⠑⡌⢢⠁⠆⡡⠑⡠⠈⡄⠡⢈⠐⢀⠂⠄⠂⢁⠀⠂⠀⡀⠄⠁⠀⡀⠀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠂⠁⠀⠀⠄⠈⠀⠀⠐⠈⠀⠀⠀⠄⠂⠀⡀⠀⠠⠀⠡⠈⠠⠐⠀⠠⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⡘⡼⢻⣿⣲⢣⠎⡰⠀⠁⡈⠀⠄⠂⠠⠀⠀⠀⠀⠀⠁⡀⠀⠁⠀⠤⢃⠙⣆⠀⠀⣂⠡⠘⡈⠔⡐⠌⠡⡐⢡⠘⡠⢊⡑⢌⠢⡑⢌⠢⡑⡈⠤⠑⠠⡁⠄⡁⠂⠌⡀⠂⠄⠡⢀⣄⣂⣡⣤⣴⡶⠀⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⡀⠀⠄⠀⠀⠂⠀⠐⠀⢀⠈⠀⠀⠀⠄⠀⠐⠀⠀⠄⠀⡀⠁⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡌⡐⣸⢱⢻⣿⠇⢣⠘⢄⠓⡲⠄⠢⠐⡁⢂⠁⠀⢀⠀⠄⠀⠀⢀⠈⠀⢈⠀⠣⢮⠀⠀⡤⠈⢅⠒⠠⡁⢊⠡⠐⢂⠢⢑⠂⡌⢢⠑⡌⢢⠑⠤⠑⡈⠆⠡⠐⡀⢂⠁⠂⠄⣡⣾⣿⣿⣿⣟⣯⣛⣃⣀⣐⣀⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠐⠀⠀⠀⠀⡀⠐⠀⠀⠐⠈⠀⠀⠠⠈⠀⠀⠐⠀⠈⢀⠠⠐⠀⡀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠄⠀⠀⡔⢠⠁⣼⡃⡎⣿⡘⡄⠣⠌⢂⠡⡌⠆⠡⠐⠠⢈⠀⠀⠀⠀⠀⠂⠀⠀⠀⠀⠂⠡⢀⠀⠀⡷⢫⡄⠌⡡⠐⣁⢂⠩⠠⢑⡈⢆⡘⢄⠣⡘⠤⣉⠢⢑⠠⢁⢊⠐⡐⢠⢌⣴⣾⣿⠿⣩⢝⠲⠌⣻⣿⣟⣟⣿⣿⡿⠛⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⡀⠀⢀⠀⠁⠀⠀⢀⠈⠀⠀⠂⠈⠀⠀⠂⠁⢀⠀⠁⠀⡀⠄⠂⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠂⠔⡁⠄⢺⣿⣿⢿⣿⢦⡁⢎⡴⢋⠔⡨⢐⠡⡘⠠⠀⠀⠀⠁⠀⠀⠀⠀⠄⠂⡔⣀⠠⠀⠀⣐⢧⠾⡶⢥⢒⠠⢂⠡⢁⠂⡌⠰⢈⠢⡑⢌⠒⡄⢃⠢⢁⢂⢂⡜⡘⣜⢾⣿⣿⣥⣘⠠⢈⠐⠠⢙⣿⣻⣯⣵⣿⠁⠀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⠁⠀⢀⠀⠁⠀⠂⠁⠠⠐⠀⡀⢀⠈⠀⡀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠄⠂⠀⠌⣸⣿⣧⣏⣮⢳⡼⢏⡘⢤⠚⢠⠃⠰⣁⠂⡁⠀⠁⠀⠀⠐⠀⠀⠀⠤⠉⠀⠁⠀⠀⢋⠌⠐⡀⣊⣾⡷⣾⠤⣁⠒⣀⠣⢈⠔⡁⢎⡰⣈⡦⡵⠎⠎⠲⢀⠁⠀⠌⠡⢋⡾⠵⢾⣤⣎⣰⢀⡆⡱⣾⠘⠀⢀⠀⠀⡀⠀⠀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠐⠀⠀⠂⠀⠀⡀⠈⠀⡀⠀⠁⠀⠂⠀⠄⠀⡀⠀⠠⠐⠀⠠⠀⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢂⠁⠂⡍⣿⣿⣷⣯⡟⠱⡈⠜⡠⢉⠦⢁⢣⠦⣥⠀⠀⡀⠐⠀⠀⠀⠀⠄⠀⠠⠀⠁⠀⠀⠠⢀⠡⢐⠩⣴⣧⣍⣦⢰⡶⣤⡻⣵⢞⡻⢟⡋⣍⠒⢍⠒⡌⠐⠀⢠⠈⢀⠀⠡⠼⠀⡀⢀⠀⠉⠉⠈⠁⠀⡀⠠⠀⢀⠀⠀⠀⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠠⠀⠀⢀⠀⠠⠀⠀⠐⠀⠀⡀⠁⠐⠀⠠⠀⠂⠀⠐⠀⠠⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠄⢊⠱⣘⠼⣿⣿⣟⡰⢃⠬⣑⠢⢍⢂⠡⣎⠝⡂⠅⠀⠀⠀⡀⠀⠂⠀⠀⠠⢁⠂⠈⠀⠀⠁⡬⠖⠨⢀⠻⠿⠛⣈⠤⠑⠡⠼⡐⢆⡉⠌⡑⠌⠐⡀⠠⠀⢂⡁⢖⣈⠤⢜⠒⡁⠐⢀⠀⠄⠈⡀⠁⠠⠁⠀⡀⠄⠀⠀⠄⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠠⠀⠀⠀⠀⠂⢀⠀⠁⠀⠐⠀⠈⠀⠐⠀⠁⡀⠂⠁⡀⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠀⢈⠐⡌⢢⠌⡻⢿⣯⣟⠶⣉⠖⡡⢊⠐⡊⣑⢨⣰⡼⢃⠀⠀⠁⠀⡀⠀⠀⠄⠀⠌⠐⠈⠆⠀⠘⢂⠄⠁⠄⠂⠄⡡⠀⢠⠛⢄⠓⡀⠒⠠⠐⠠⡁⠆⡰⢀⠬⣁⠆⣑⠚⡘⠠⠀⠄⡁⠄⠂⠐⡀⠠⠀⢁⠀⠂⢀⠀⠐⠀⢀⠀⠀⠐⠈⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⡀⠀⠄⠂⠁⠀⡀⠀⠈⢀⠠⠈⠀⠁⠠⠈⢀⠀⠄⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠂⠀⠀⠀⢀⠂⡘⢄⠫⣖⠱⢚⠟⠿⢷⣯⣶⠯⢞⡵⣮⢗⠳⣌⠣⠄⠂⠀⠂⠐⠀⠀⡀⠈⡐⠠⠈⠀⠀⢀⠂⠄⢨⠀⠆⠸⠄⠐⠠⢁⠂⠡⠤⠁⠆⡡⣒⠀⢒⠧⠂⠕⡈⠐⡀⠂⠄⠡⠈⠄⠐⠠⠁⢂⠀⠐⢀⠠⠀⠂⠀⠀⠂⠈⠀⠀⠄⠀⠀⠀⠠⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠠⠀⠀⢀⠀⠀⠄⠐⠀⠀⡀⠁⠀⡀⠄⠈⠀⠄⠐⠀⠠⠀⠐⠀⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠢⢌⡌⠰⣈⠛⣦⣭⣩⣍⡴⣰⠚⣭⣞⠳⢎⡳⣌⠡⠂⠀⠠⠈⠀⡐⠀⠀⠀⠄⠡⠈⠄⠀⢀⠋⠆⡖⠨⢂⠁⡐⣈⠣⢄⡈⠔⣤⢩⠰⠥⢂⠋⠌⡐⡉⢐⠠⠁⠄⠡⠈⠄⠡⠈⠄⠁⠂⠄⠂⢁⠠⠀⠐⡀⠁⠐⠀⠁⡀⠂⠀⡀⠂⠀⢀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⠀⢀⠀⠂⠀⠁⠀⠠⠁⠀⠀⠂⠁⠀⠂⠈⢀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⢂⠡⠀⠃⠂⣀⠳⣌⠳⣄⣃⠓⡌⢎⢥⣿⠳⣌⡛⡬⡕⡎⡔⢁⠀⠁⠀⠄⠀⠄⠀⠈⠄⠡⠈⠄⠀⠠⢈⡐⢀⠆⣀⠒⠠⢂⠡⢒⡘⢡⠐⡄⢃⠒⢄⠣⠘⡄⡘⣀⠂⢡⠈⢂⠡⠈⠄⠡⠈⠄⡁⠂⠌⡀⠐⢈⠀⠄⠈⡀⠌⠀⠀⠄⠀⠀⢀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠁⠀⢀⠀⠀⡀⠈⠀⠐⠀⡀⠈⠀⠐⠈⠀⠄⠁⡀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⡀⠀⠄⢀⠰⢠⢉⠳⣧⢘⠻⣷⣾⣾⣞⣣⡝⢦⣙⠶⡝⣞⡴⢂⠀⠀⠂⠀⠠⡀⠀⠀⠌⠠⢁⠂⠀⠠⢁⠰⢈⠐⠠⡈⢁⠢⢁⠂⠤⢁⠊⠤⢁⠊⡐⠌⡡⠐⠄⡐⠈⡄⠌⡀⢂⠡⠈⠄⡁⠂⠄⡁⢂⠐⢈⠠⠀⢂⠀⠄⠀⠐⠀⡀⠄⠈⠀⠀⠀⠀⠀⢀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠈⠀⠀⠄⠀⡀⠁⠀⠂⠀⠄⠁⠠⠈⠀⠄⠂⠠⠀⢂⠠⠀⠁⠀⠠⠀⡁⠀⠌⢀⠡⠐⡀⠰⠀⢈⠢⡑⢎⠤⡙⡞⣧⣙⠶⣦⣍⣛⣏⡽⣣⢮⣝⠾⣱⢊⢆⠠⠈⠀⡀⠁⠀⠀⠀⠌⡐⢀⠂⠀⠐⠠⠒⢠⢁⠒⠠⡁⢂⠢⠉⡔⠨⡐⠡⠌⡐⢌⠰⢠⠉⠤⢁⠒⡀⠂⠔⡀⢂⠁⠂⠄⡁⢂⠐⠠⢈⠠⠀⢂⠀⠄⠂⠈⠀⢀⠀⠀⠀⠀⡀⠀⠁⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠁⠀⠀⠁⠀⠠⠀⢀⠀⠁⡀⠈⠀⠐⠀⠠⠁⠀⠄⠁⠠⠀⢀⠐⠀⡀⠀⠠⠀⠄⠂⠌⠀⠀⠀⡁⠠⠂⠀⢧⡙⣦⢡⠹⣌⡻⢶⣅⠻⠿⣿⣿⣷⣯⣜⣣⢧⣋⣦⠁⠄⠀⡀⠠⠀⠈⢀⠢⠐⡀⠂⠀⠈⠡⠘⡀⠂⠌⠡⠠⢁⠂⡑⠠⢃⠰⢁⠊⠔⡈⠔⠂⡅⠒⣀⠂⡐⢁⠂⡐⠠⢈⠐⠠⠐⠀⠂⡁⠄⠀⠂⠀⠄⠂⢀⠂⠁⠀⠀⡀⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⢀⠀⠂⠁⠀⢀⠀⠠⠀⢀⠀⠁⡀⠂⠀⠄⠁⠠⠈⢀⠐⠀⡀⠂⠠⢀⠀⠀⠀⡀⠀⠄⠀⠀⠀⠄⠀⠀⢳⡍⣖⢫⠖⣤⡙⢳⣽⣻⢷⣦⣝⣻⠿⣿⣿⡻⢿⣿⣿⢶⠀⠀⡀⠐⠀⢀⠂⠡⢀⠡⠀⠀⡁⠆⠡⢈⠐⠡⢁⠂⢌⠠⠑⡈⠔⣁⠊⠤⢑⠨⠑⠄⡃⠄⠒⣀⠂⡐⠠⢁⠂⡈⠐⢈⠀⡁⠠⠐⠈⢀⠁⠠⠈⠀⠠⠀⠈⠀⠀⠀⠀⡀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⡀⠀⠈⠀⢀⠀⠄⠀⠀⠄⠀⡀⠁⠠⠈⢀⠐⢀⠀⠂⠀⠄⢁⠠⢀⠀⠀⠀⡐⠀⢂⠑⠨⠀⠀⠠⢸⣾⣾⣿⣿⣷⣯⣷⢦⣙⠿⣾⣶⣾⠿⢶⣶⣽⣳⣦⡴⣠⢂⠀⠀⡀⠀⠀⠌⡐⢀⠂⠀⠀⡐⠈⠄⠡⡈⠔⠠⢁⠂⠌⢡⠈⠆⡄⠣⡈⠆⡡⢉⠢⢁⢊⠡⢀⠂⠄⡁⢂⠐⡀⠁⢂⠠⠀⠐⠀⡁⠠⠀⠂⠀⡁⠀⠀⠂⠁⢀⠀⠁⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠠⠐⠀⠀⠀⠂⠁⠀⠠⠀⠈⢀⠠⠀⠀⠄⠁⠠⠀⢀⠂⠀⠌⠀⡐⠀⠄⠀⢂⠀⠀⠀⠈⠀⠨⠀⠀⠐⠀⠀⣿⣿⣿⣻⡿⠿⠿⠿⡿⣿⢿⡿⡾⢿⡿⠿⢿⣻⠭⠙⠁⠁⢀⠀⠄⠀⠀⠂⡐⠠⢈⠀⠀⡐⠉⠤⢁⡐⢈⡐⠄⠊⢌⠠⠘⡠⠌⡐⢡⠘⡄⢃⠜⢠⠂⣂⠡⢈⠐⡀⢂⠐⠠⠁⠠⠐⢈⠀⠐⠀⠠⠐⠈⢀⠀⠈⠀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⡀⠐⠀⠀⠂⠀⠐⠈⠀⠀⠄⠁⠠⠈⢀⠐⠀⡐⠈⢀⠐⠀⡐⠈⠐⡀⠐⠀⠀⠈⠀⠂⠀⠀⠂⠀⡀⠈⠛⠿⠵⠀⠀⠀⠀⠀⠀⠀⠀⠀⡀⠀⣀⠠⢀⠠⠀⠐⠈⠀⠀⠠⠀⠀⠀⠄⡁⢂⠀⠀⠄⢃⠰⢀⠰⢀⠐⡈⠔⠂⠌⣁⠢⠘⣀⠃⡌⠰⣁⠊⡄⢃⠄⢂⠂⡐⢀⠂⠌⡀⢁⠂⢈⠀⠠⠁⠐⠀⠠⠈⢀⠠⠈⠀⠀⠄⠀⠂⠁⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⢀⠀⠀⠀⠀⠂⠀⠈⢀⠀⠈⢀⠠⠈⢀⠐⠀⠐⠀⠠⠐⠀⡀⠂⠠⠀⠁⠄⠂⠁⡐⠀⠀⠀⡀⠁⠀⠀⢀⠀⠀⠀⡀⠀⠀⠀⠐⠀⠀⠂⠈⠀⠀⡠⢌⠣⣍⢢⡁⠀⠀⠀⠐⠀⠀⡐⠈⠠⠐⠠⠀⠀⠌⡀⠆⡈⠐⠠⢈⠐⡈⠔⠡⡀⠆⢡⠐⠌⡐⠡⢄⠃⡌⢂⠌⠄⠒⡀⠂⠌⠠⠐⠀⠄⠂⡀⠁⠄⠈⢀⠐⠀⡀⠀⢀⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⢀⠀⠀⠀⡀⠈⠀⡀⠈⠀⡀⠀⠈⠀⡀⠐⠀⠠⠈⢀⠈⢀⠐⠀⠠⠀⠁⠄⠁⢂⠈⠄⠀⠂⠌⢠⠀⠀⠀⠠⠀⠀⠈⢀⠀⠀⠀⠀⡀⠀⠀⠀⠀⠈⠀⠀⠉⠆⢁⠒⠀⢀⠈⠀⠀⠠⠀⠀⠠⠀⡁⢂⠀⠀⢂⠁⠢⢈⡐⢁⠂⠰⠐⡈⠰⢀⠊⢄⡘⢠⠡⠑⣂⠱⡐⠌⠰⢈⠐⠠⠁⠌⠠⢁⠈⠄⠂⢀⠂⠀⠁⡀⠀⠂⠀⠄⠀⠀⠀⠀⠄⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠀⠀⢀⠠⠀⠀⡀⠁⠀⡀⠁⢀⠀⠐⠈⠀⠐⠀⡀⠂⢀⠈⠀⠌⠀⠄⢁⠠⠀⠂⠁⠄⠂⡀⠌⠁⠲⢄⣠⣀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠀⠀⠄⠈⠀⢀⠐⠠⠀⠀⠂⠌⡁⢂⠐⠠⡈⢁⢂⠁⡒⢈⠐⢂⠰⢀⢊⠡⡐⠰⢈⠌⣁⠂⠌⠠⠁⠌⡐⠠⢈⠀⠌⡀⠠⠁⡀⠄⠐⠈⠀⡀⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⢀⠀⠁⠀⠀⠁⠀⠀⠠⠀⢀⠀⠁⡀⠀⠂⢀⠈⢀⠈⠀⠄⠀⠂⢀⠠⠁⠐⠈⢀⠠⠀⠂⢁⠈⠠⠐⠀⠄⠡⠀⢂⠀⠠⠉⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠈⠀⠀⢀⠂⠐⠀⢁⠀⠠⢁⠂⣀⡈⠐⡀⠂⠌⡐⠠⢁⠂⢡⠐⡈⠰⢈⡐⠌⠄⢢⠑⠨⠄⢒⠠⠌⡀⠃⠌⡐⠠⠁⢂⠈⠄⠠⠐⠀⡀⠄⠂⠈⢀⠀⠀⠄⠈⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⠀⠀⠂⠈⠀⠐⠀⠠⠀⠀⠄⠀⠐⠀⡀⠠⠀⠠⠈⠀⠄⠁⡀⠠⠀⢁⠈⠀⠄⠂⢁⠠⠀⢁⠠⠁⡈⢀⠂⠠⠈⠄⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠠⠀⠊⠄⢠⠀⠀⠁⠄⠀⠀⠈⠡⢀⢁⠢⢀⠁⠂⠌⡀⠂⠤⢁⠂⠰⠈⢌⡀⠎⣁⠊⢄⠒⠠⠁⠌⡐⠠⠁⠌⡀⢂⠠⠁⠄⠂⠀⠄⠂⠁⡀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠠⠀⠈⠀⢀⠠⠐⠀⠠⠀⠐⠀⡀⠈⠀⠄⠀⠄⠀⡁⠀⠂⢀⠂⢀⠐⠀⠄⠐⠈⡀⠐⠠⠐⠈⠠⠀⡁⠄⢀⠂⠁⠄⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠀⠀⠀⠠⠁⠌⠄⠀⠠⢁⠂⠀⠀⠀⡁⠂⠄⠂⠄⠌⡈⠐⠠⢁⠂⠤⢈⡁⠎⢠⠐⡈⠤⠘⡠⢈⠡⠌⡐⠠⠁⠌⡐⠠⠀⢂⠐⢀⠂⠁⡀⠂⠁⠀⠄⠀⡀⠁⠀⠄⠂⠀⠀⠀⠀⠀⠀⠀⠀⠀
⠀⠀⠀⢀⠠⠀⠀⠀⠄⠀⠐⠀⡀⠄⠐⠀⡀⠂⠀⠂⠀⠄⠁⠠⠀⠂⠠⠈⡀⠌⠀⡐⠈⡀⠂⢁⠂⡁⠄⠂⠄⠂⡈⠄⠠⠁⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠐⠀⠀⠀⠀⠈⠀⠀⠐⠀⠀⠄⠁⠄⠂⠄⠀⠂⠄⠡⢈⠐⡈⠐⠠⢉⠐⠠⢈⡐⠄⡐⠨⠄⢂⠅⠢⡑⢠⠁⠢⠐⠠⠁⠌⡐⢀⠂⡁⢂⠈⠠⠐⠀⠄⠂⠁⡀⠂⠀⢀⠠⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
⡀⠠⠀⠀⠀⠀⠐⠀⡀⠈⠀⠄⠀⠄⠂⠀⠄⠀⡁⠠⠁⠠⠈⠀⠄⢁⠀⠂⠠⠀⡁⠄⠂⠄⠡⠀⠂⠄⢂⠁⢂⠁⠄⠂⡁⠐⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠁⠀⠀⠀⠀⠈⠀⠀⠠⠀⠂⠀⠠⠈⡐⢈⠀⠀⠈⠄⡁⢂⠐⠠⢉⠐⠠⡈⠄⠡⠐⡐⡈⠔⡈⢄⠊⡡⢐⠡⠌⢡⠈⠡⢈⠐⡀⢂⠐⠠⢀⠂⠁⠄⡁⠄⠂⠁⡀⠄⠁⡀⠀⠐⠀⠁⠀⠀⠂⠀⠀
     Michael Jackson * First Onchain Collection 9/12 * Legends @ BTC⠀⠀⠀⠀

10/12 tx 74f2b9b61d2d79bf0f3ba1f13088fb1c56cf308202afd508b6b88fe4e8b99c74

Pepe the Frog themed collections:
- "Hiddenpepe" collection. These are present inside HTML comments, and don't show well on ordinals.com. But you can see them by inspecting the HTML code, e.g. at: view-source:https://ordinals.com/content/a66a54878d428fc7bdf5758ea3bf2ebe1c76750043c22dc6ff05d7cb5a0c0a37i0.
  By looking at the short JavaScript code, the page seems to select one plain background color at random, but it didn't seem to work very well, we always get the same color?
  A comment at the end of each inscription reads:
  THIS IS A BEARER ASSET OWNER HAS ALL RIGHTS
- "Pistol Pepe": these simple browser games contain an ASCII art as an HTML comment. The are signed "www.twitter.com/tewz1 tewz.cent.co/" (twitter "Account suspended" as of April 2024).
  - tx dbd3f4a6b59e31cef45f33232caa3e9f9b354047e907591354550baf5c7ae98e: cowboy themed
  - tx a6b3180e61eee3944681ae1dc5475997fd6509ac764b0066a6c32abe7a7ae859: day Egypt themed
  - tx 27639c588bf8a5f917bc95dbbb66f20ea2a5034cb5c3ba3f3fad96ebb47e336c: night Egypt themed

ANSI art. These can only be viewed on a terminal:

tx 2a319ec83d8e93cd8003a8d087514a0f775b7314128fbdf4d59aad2f9664ac04: Pepe the Frog with lots of terminal blink on the background, quite cool
Figure 3.
Pepe the Frog ANSI art
. Screenshot of the ANSI art taken from a terminal.
tx 2a96eb44afce6028cbb6c1a639c9e93cf40a58e2bdc97f9d642fa0ec5713507a: "incoming call Satoshi Nakamoto" has the image of a man in suite with some dark terminal colors, pretty cool

ASCII porn:

tx de57a32fcae4c20c16ebb9782ecc550f199e2f7d3a2149188945b21fcff99177; man drinking with while pulling out his huge dick

Misc:

tx 9089c4fac49593628e1334bbfe94080819bdac67eac18c9ffece5a2bc235a380: wizard taking a shower
tx fdf9b82e3177c5404f8251ad26460788fc8b29cc4cbd4951ea5e8438dcce9631: and tx 2031b40ccb3944822be709c9a41f38e10ddf13c577b3f2c4d2046ac73020f6f9 middle finger Unicode art. Both marked "THE MIDDLE 1/15".
Figure 4.
THE MIDDLE 1/15
. Screenshot taken from ordinals.com/content/fdf9b82e3177c5404f8251ad26460788fc8b29cc4cbd4951ea5e8438dcce9631i0.
tx ed3bd1a0cd8a18743acfd7162649a43b69f25a540fbfe6a2352a612ebfb381e6: JavaScript that generates a demoscene ASCII art animation that looks like a rotating thing
tx 78240e4691c7f75311a03125567f1e44fc0049db611f0ac554f04f8790e28e24: cute cartoon dog giving wearing a headband and giving thumbs up. The Chinese subtitle reads:
买海豹胆小鬼
which Google Translate translates as:
A coward who buys seals
TODO context. Sample hit at: twitter.com/0xTenkito/status/1612939684816031746
tx 3a474f540c1917817fba51d2f9fd647887c8c3cd9687eb8d34ab6787c9e8a7fa: ASCII art of mysterious man typing on his laptop. Satoshi comes to mind. The man's hat contains the following Korean characters;
진실로같이가요
which Google Translate translates as:
Let's go together truly
tx 18b7728f32ff27d410e57e289bca7b8c2bdf7c30a1c572a41acc1a8ff576b6ab: "I Want you BTC Maxis, Ordinal Army Enlist Now"
tx 2fc46b52e3ab7a1053c4c65a4dc3af6bb7e51eb15cb988294af3a203ad254eed: contains an ASCII art of an Iron Man-like mask with text:
Did you know that within ASCII art an encrypted msg can be inside? All you need to do is decode it. Hence a pictureworthsthousandwords.
But hopefully/presumably the author meant Steganography and not encryption right? Code "Your free GrrCon ticket" comes to mind.

tx 6d1d99ed05a152d59fdef4eb26a4a07a4f81dcd945249639af272504b4e70d27: Bitcoin whitepaper as Markdown, but with some great Unicode art rendition of the diagrams!

      ┌─────────────────────┐               ┌─────────────────────┐              ┌─────────────────────┐
      │                     │               │                     │              │                     │
      │    Transaction      │               │    Transaction      │              │    Transaction      │
      │                     │               │                     │              │                     │
      │   ┌─────────────┐   │               │   ┌─────────────┐   │              │   ┌─────────────┐   │
      │   │ Owner 1's   │   │               │   │ Owner 2's   │   │              │   │ Owner 3's   │   │
      │   │ Public Key  │   │               │   │ Public Key  │   │              │   │ Public Key  │   │
      │   └───────┬─────┘   │               │   └───────┬─────┘   │              │   └───────┬─────┘   │
      │           │    .    │               │           │    .    │              │           │         │
──────┼─────────┐ │    .    ├───────────────┼─────────┐ │    .    ├──────────────┼─────────┐ │         │
      │         │ │    .    │               │         │ │    .    │              │         │ │         │
      │      ┌──▼─▼──┐ .    │               │      ┌──▼─▼──┐ .    │              │      ┌──▼─▼──┐      │
      │      │ Hash  │ .    │               │      │ Hash  │ .    │              │      │ Hash  │      │
      │      └───┬───┘ .    │    Verify     │      └───┬───┘ .    │    Verify    │      └───┬───┘      │
      │          │     ............................    │     ...........................    │          │
      │          │          │               │     │    │          │              │     │    │          │
      │   ┌──────▼──────┐   │               │   ┌─▼────▼──────┐   │              │   ┌─▼────▼──────┐   │
      │   │ Owner 0's   │   │      Sign     │   │ Owner 1's   │   │      Sign    │   │ Owner 2's   │   │
      │   │ Signature   │   │      ...........─►│ Signature   │   │     ...........─►│ Signature   │   │
      │   └─────────────┘   │      .        │   └─────────────┘   │     .        │   └─────────────┘   │
      │                     │      .        │                     │     .        │                     │
      └─────────────────────┘      .        └─────────────────────┘     .        └─────────────────────┘
                                   .                                    .
          ┌─────────────┐          .            ┌─────────────┐         .            ┌─────────────┐
          │ Owner 1's   │...........            │ Owner 2's   │..........            │ Owner 3's   │
          │ Private Key │                       │ Private Key │                      │ Private Key │
          └─────────────┘                       └─────────────┘                      └─────────────┘

tx e643b2a25b6df9c1d5b0fad7168677a71b96544707efab16f0cf0266981cbe53: "Dear Luke Dashjr, here’s why I want to join the @TaprootWizards"
tx 6987171da8a07b365686f3ec25ccc08f731943eecbbebed0c9b0df63b58d69fe: classical painting of a nude female model marked "By Johnny Dollar J$"
tx 8ae6534ba41e305fedf068696111d5445e90c48cbd18081503e831399f1a11fb: HTML of monkey face with bow tie and pink cheeks. Cute! The HTML code is also arranged in a monkey like pattern.

tx d6c60f0efc9f3155712775c2a0f4e1d805f000fc50763c440cb575f252de371d: also seen at: www.h17n.art/: HTML with the busts of a few people who strongly criticized Bitcoin: Warren Buffet, "Paul Krugman", "Christine Lagarde" and "Peter Schiff":

HYPERBITCOINIZATION
A collection of 17 text inscriptions blessed by the most diligent bitcoin evangelists

                                                 ., ..,     ,
                                         ,..,  *,.  ,***/,..,/...,.
                                         ,.//(////*/#((//(##%#*   .  . .
                                    ,.**&&&&&%#%#%%%%%%###%%%%(//*,.  .         .
                              ..**/%&@&%&&@&@&@&@@&&&%%%%#%%&%%####/   ...
                       .,,.,(//(&&&&&&&&&&&&&@@&&%#%&(%%##%#%##%%%#((#(*  .,
                       /*(*(%&&&&&&&&&&&&@@@&@&&%%%%%%##((########(#((/(//,. *
                  .  .,(((%&@&&&@&&&&&&&&&&&@&&&%%#%####%##(((((((#(###((/*****.../   .
                 .,,(%&&&&&&&&&&@@@@@@@@&&&%%#%######(#%#(#(###(((((#((#(#(((//##//*,,, .
              ,, %%&%&&&&@&&@&@&%#@########%##(((((((#((((#(((#((((((#(#####(//(##(#((// *..
              ,.(%&&&&&&&@&&&&%&%%%%&&%&%%%%%%%&&&%%%%%%%%########((#######(#((/(((#%(#(((*.
           *  **%&&&&&&&&%%@%%&&&&&&&&&&&&&&&&&&&&&%%%%%%%%##%##############(#(/##((####(((/,.
          *  .#&&%&&%@&&%&&&&&&&&&&&&&&&&&&&&&&%%%%%%%%%#%%%%%#######((#####%#(//(((#((##((/((,
          , .%&%&&%&&%%&&@&&&&&@&&&&&&&&&&&&&&&&%%%%%%%%##%%%##(####(##(#(##%(((*(((###(#(/((/((#,
          .,&%%&%&%##&&@&&&&&&&&&&&&%&&&&&&&&@&&&&%%%%%%%%#######(####(((####/#/(/(#(((##(/(((((#(/*
          .#%#%&&&#&&&&&&&&&&&&&&&&&&&&&&&&&&&&&%%%#%%%%#######(#####(((##(#(/%/(//(#///(((/(((((((/.
          *(#%&&%%%%&&&&&&&&&&&&&&&&&&&&&&&&&&&%%%%%#%%#####(##((#((((((((####(/((/((##/((((//(/((((/*
          ,###%%##%%&&&&&&&&&&&&&&&&&&&&&&&&&&%%%%%#########(#(((((((((((((%##(///*/((#/(#/((/(///(/**.
          */#%%%%%&&&&&&&&&&&&&&&&&&&&&&&&&&&%&%#%%#%#########(#(#((((/((//(//#(#(/((/*//(((#(/*,,****
           *##%%%%%&&&&&&&&&&&&&&&&&&&&&&&&&%%%%%%%#%%########((((((((///(##%(((#/(##,*(/#//((/****,...
            *(#%%%&&%&&&&&&&&&&&&&&&&&&&%%%&%%%%%#%#%#%%%#%###(/(((/(//(((/%(((/(////*/**//*****,***,
             ,#&&%%&%%&&&%&&&&&&&&&&%&%%%%%%#%%%%&%&&%&&%%%%###(((/////((###(%(/*/*,/,*,,,******,,,*
            *.&%&&&&&&%%%%%%%%%%%%%%#&%%%%&%&&%%%%%&&#####((##((((////(/###%(#//.**,***//,....,*.
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Figure 5.

Warren Buffett photo from hist Bill & Melinda Gates Foundation profile

. Source. Off-chain reference image for the ASCII art.

Small art as part of an ad for something like a collection or service:

tx e00318a4c0769f641ee62cfd8d55ac671d987244762a34895cc29c6142964dd4: ordinal bears collection header
tx b0f140eddbe03c98d982524d81ab5beecfee3e135bc658173e38ffd675ca9f08: 999 club
tx 29a4d4fb8ea570a5e6520c0c6d56bf44d00e5c0028b33f57eb1d2bbda4c467e1: "Bitcoin Bots"
tx 86747b2b5118dd3c3911f8506818af7f6bf102ecd35f854d796021466bc4b548: "Bad Bunnies" badbunnies.xyz/ ad
tx 0fc35f856bfd43e0c939100d9a21beccdac8264db81c0927cb681dcd22628dd6: EspressOrdinals
tx 65bded5452fb0d158da19652afbee41cbc50c01513f3a50cf3540a059ace6e8a: ORDINALIENS twitter.com/ordinaliens
tx 72c5d96279012faed9c464e75877186abd21c0fe6f5f00e244a7bd606d515b26: inscribeords.com "Inscribe Ords", an inscrption service

tx 99e90c6f741921cc6740c4b402dbd69f40d3686be06d18aab39561871ad22b16: "immordal" Unicode art

Our algorithm is designed to give a rarity score to tweets based on their visibility and interaction.
We take into account metadata such as views, likes, and retweets, and assign a grade to each category.
These grades are then used to determine the rarity score of the tweet.
We believe that this system will create a more just and equitable online community, where individuals
are rewarded for meaningful contributions, rather than for clickbait or sensationalism.

tx 61ab46f60128c36a0dd9f9503711d38eef8737e88e6b78cad7365a54fdac7aa4: twitter.com/minidogeart "Ordinal Mini Doges"
tx 9402c3c7f837353e68fae663027e7251b52820bd10dfd3fb57779c3c4bcb291a: Bitkoingz @BitKoingz

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Sean M. Carroll  Updated 2025-03-28  +Created 1970-01-01

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Works at Caltech as of 2020.

Sean's series The Biggest Ideas in the Universe has some merit, but it's just to math-light falling a bit below the missing link between basic and advanced.

But as usual, it falls too close to popular science for Ciro's taste.

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Quaternion  Updated 2025-03-28  +Created 1970-01-01

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Kind of extends the complex numbers.

Some facts that make them stand out:

one of the only three real associative division algebras in addition to the real numbers and complex numbers, according to the classification of associative real division algebras
the simplest non-commutative division algebra. Contrast for example with complex numbers where multiplication is commutative

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Mentava  Updated 2025-03-28  +Created 1970-01-01

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www.mentava.com/

Mentava's software-based daily tutor gets students on track for college-level math and computer science before high school.

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Functional Analysis I course of the University of Oxford  Updated 2025-03-28  +Created 1970-01-01

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Quantum computer physical implementation  Updated 2025-03-28  +Created 1970-01-01

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Lists of the most promising implementations:

As of 2020, the hottest by far are:

Video 1.

How To Build A Quantum Computer by Lukas's Lab (2023)

Source.

Super quick overview of the main types of quantum computer physical implementations, so doesn't any much to a quick Google.

He says he's going to make a series about it, so then something useful might actually come out. The first one was: Video "How to Turn Superconductors Into A Quantum Computer by Lukas's Lab (2023)", but it is still too basic.

The author's full name is Lukas Baker, www.linkedin.com/in/lukasbaker1331/, found with Google reverse image search, even though the LinkedIn image is very slightly different from the YouTube one.

As of 2023 he was a PhD student at NYU.

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Quantum computing player in Brazil  Updated 2025-03-28  +Created 1970-01-01

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Paulo Nussenzveig physics researcher at University of São Paulo. Laboratory page: portal.if.usp.br/lmcal/pt-br/node/323: LMCAL, laboratory of coherent manipulation of atoms and light. Google Scholar: scholar.google.com/citations?user=FbGL0BEAAAAJ
Brazil Quantum: interest group created by students. Might be a software consultancy: www.terra.com.br/noticias/tecnologia/inovacao/pesquisadores-paulistas-tentam-colocar-brasil-no-mapa-da-computacao-quantica,2efe660fbae16bc8901b1d00d139c8d2sz31cgc9.html
DOBSLIT dobslit.com/en/the-company/ company in São Carlos, as of 2022 a quantum software consultancy with 3 people: www.linkedin.com/search/results/people/?currentCompany=%5B%2272433615%22%5D&origin=COMPANY_PAGE_CANNED_SEARCH&sid=TAj two of them from the Federal University of São Carlos
computacaoquanticabrasil.com/ Website half broken as of 2022. Mentions a certain Lagrange Foundation, but their website is down.
QuInTec academic interest group
- www.terra.com.br/noticias/tecnologia/inovacao/pesquisadores-paulistas-tentam-colocar-brasil-no-mapa-da-computacao-quantica,2efe660fbae16bc8901b1d00d139c8d2sz31cgc9.html mentions 6 professors, 3 from USP 3 from UNICAMP interest group:
- drive.google.com/file/d/1geGaRuCpRHeuLH2MLnLoxEJ1iOz4gNa9/view white paper gives all names
  - Celso Villas-Bôas
  - Frederico Brito
  - Gustavo Wiederhecker
  - Marcelo Terra Cunha
  - Paulo Nussenzveig
  - Philippe Courteille
- sites.google.com/unicamp.br/quintec/home their website.
- a 2021 symposium they organized: www.saocarlos.usp.br/dia-09-quintec-quantum-engineering-workshop/ some people of interest:
  - Samuraí Brito www.linkedin.com/in/samuraí-brito-4a57a847/ at Itaú Unibanco, a Brazilian bank
  - www.linkedin.com/in/dario-sassi-thober-5ba2923/ from wvblabs.com.br/
  - www.linkedin.com/in/roberto-panepucci-phd from en.wikipedia.org/wiki/Centro_de_Pesquisas_Renato_Archer in Campinas
Quanby quantum software in Florianópolis, founder Eduardo Duzzioni
thequantumhubs.com/category/quantum-brazil-news/ good links
qubit.lncc.br/?lang=en Quantum Computing Group of the National Laboratory for Scientific Computing: pt.wikipedia.org/wiki/Laboratório_Nacional_de_Computação_Científica in Rio. The principal researcher seems to be www.lncc.br/~portugal/. He knows what GitHub is: github.com/programaquantica/tutoriais, PDF without .tex though.
quantum-latino.com/ conference. E.g. 2022: www.canva.com/design/DAFErjU3Wvk/2xo25nEuqv9O7RbCPLNEkw/view

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Decay scheme  Updated 2025-03-28  +Created 1970-01-01

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Example: Figure "caesium-137 decay scheme"

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555 timer IC  Updated 2025-03-28  +Created 1970-01-01

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