Squaring the circle

{c}
{title2=Cut a circle into square}
{wiki}

Does not require straight line cuts.


Tarski's circle-squaring problem

{wiki=List_of_Chinese_musical_instruments}

The main four instruments are undoubtedly:
* <guqin>
* <pipa>
* <guzheng>
* <erhu>
but there is also amazing content on others which must not be missed, including:
* <suona>
* https://en.wikipedia.org/wiki/Xiao_(flute)[Xiao flute]

Infinite Wikipedia instrument list: https://en.wikipedia.org/wiki/List_of_Chinese_musical_instruments

\Video[https://www.youtube.com/watch?v=algwi6TzUdU]
{title=25 musical instruments OF <China> by Learning Music Hub}
{description=Great video, covers all the most important ones briefly with examples of varying relevance.}

\Video[https://www.youtube.com/watch?v=nheS1beqkmQ]
{title=A beginner’s guide to Chinese musical instruments by <SCMP>}
{description=2024. Terrible editing, way to hard to see instrument name.}

\Video[https://www.youtube.com/watch?v=tcfTTP8O5NA]
{title=<Chinese musical instrument>[Chinese] vs Western musical instrument battle scene from Our Shining Days}
{description=A bit cheap, but it has some value.}


Chinese musical instrument

\Video[https://www.youtube.com/watch?v=eGjgLrWbIfQ]
{title=Rorogwela by Afunakwa (1970)}
{description=Later used as a vocal sample in the https://en.wikipedia.org/wiki/Sweet_Lullaby[Sweet Lullaby] by Deep Forest (1992), which notably featured in https://en.wikipedia.org/wiki/Where_the_Hell_is_Matt[Where the hell is Matt (2006)], an early <YouTube> viral video. The original destroys the Deep Forest version however.}


Rorogwela

{c}
{tag=YouTube channel}
{wiki}

https://www.youtube.com/channel/UCtESv1e7ntJaLJYKIO1FoYw


Periodic Videos

Alfred Nobel

Johann Joseph Loschmidt

{c}
{tag=1908 Nobel Prize in Chemistry}
{wiki}

= Ostwald
{c}
{synonym}


Wilhelm Ostwald

{wiki}

The definition does not include <homonuclear molecules> which is a pain.


Chemical compound

Reaction rate

{wiki}

TODO why can't we produce <organic compounds> more cheaply by total synthesis than biosynthesis?


Total synthesis

https://en.wikipedia.org/wiki/Process_design

\Video[https://www.youtube.com/watch?v=gkj-FZOldpI]
{title=Computer Aided Simulation & Design in Chemical Engineering by Chemical Engineering Guy (2016)}
{description=Interesting overview of the different types of modelling software used in chemical process design.}

\Video[https://www.youtube.com/watch?v=9jRfAJJO7mM]
{title=How to Design a Total Synthesis by Mike Christiansen (2013)}
{description=Just a ultra quick <hello world> with some very basic ideas, but worth watching.}

\Video[https://www.youtube.com/watch?v=rbhkAu5mgis]
{title=SuperPro Designer: Fermentation Simulation by LearnChemE (2012)}


Chemical process design

{tag=Entropy}

First, experiments, please how do you determine it and how it helps predict the future: https://chemistry.stackexchange.com/questions/42066/is-there-a-way-to-experimentally-measure-entropy

No <YouTube> video? Really?


Ciro Santilli @cirosantilli  40