Johanan Codona

Mathematical Physicist, numerical modeler, inventor of ideas, paradigms, methods, and things. Last branch of the Flying Codonas and Buislay Aeronaut Families.

[SpaceX @SpaceX]

Watch Falcon 9 launch 27 @Starlink satellites to orbit from California https://t.co/HRsMJNNPTp

[Johanan Codona @phasemaster]

In 1985 I developed the theory of #SolarEclipse #ShadowBands as a simple application of my much more general PhD work. It explains all observed and reported effects of #ShadowBands and predicts details yet to be measured. Paper pdf... https://t.co/v53VaZfRJO

[Johanan Codona @phasemaster]

@orac1965 @pickover Last step is to let the number of bits go to infinity.

[Johanan Codona @phasemaster]

Our HartSCI commercial COTS AO system has been released.

PlaneWave CDK700 and HartSCI ClearStar Adaptive Optics https://t.co/fVGJYJFK7X via @YouTube

[Johanan Codona @phasemaster]

@mattkenworthy Congratulations to David! Excellent title too. How do I get a physical copy?

[Johanan Codona @phasemaster]

My Great Uncle, Abelardo "Lalo" Codona, trapeze artist. #DeepNostalgia

[Johanan Codona @phasemaster]

My Great Uncle, Alfredo Codona, trapeze artist. Reanimated by #DeepNostalgia.

[Johanan Codona @phasemaster]

My Great Grandmother, Hortensia Buislay Codona. One of the last members of the Buislay circus family and mother of the famous Codona circus stars.

[Johanan Codona @phasemaster]

My Great Grandfather, Eduardo Codona. Patriarch of the Mexican-American "Flying Codonas" family.

[Johanan Codona @phasemaster]

@fermatslibrary Change Int128 to BigInt and run much farther.
To 1000...
6: (5, 3)
10: (7, 6)
24: (23, 4)
120: (119, 5)
720: (719, 6)

10 is still the only one that doesn't follow the pattern of
(n!)! = (n!-1)n!

[Johanan Codona @phasemaster]

@fermatslibrary In Julia:
F = [factorial(n)*factorial(m) for n=Int128.(1:20), m=Int128.(1:20)];
for n=Int128.(1:20)
LIST = Tuple.(findall(F .- factorial(n) .== 0))
if length(LIST)>2
println(n,": ",LIST[2])
end
end

6: (5, 3)
10: (7, 6)

So 6!==3!5! and 10!==6!7!

[Johanan Codona @phasemaster]

@fermatslibrary Note that this implies: 10! = 3! 5! 7!

[Johanan Codona @phasemaster]

Remembering Joe Filice, 1954-2017. My fellow UCSD grad student, Interstellar Scintillation pioneer, and much more. https://t.co/fuxyfAXMmU

[Johanan Codona @phasemaster]

@phasemaster Et tu, NASA? https://t.co/uusmnSOmww

[Johanan Codona @phasemaster]

I keep seeing people say Solar Eclipse Shadow Bands are "unexplained."
I beg to differ.
https://t.co/UekptTYxli #NationalEclipse

[Johanan Codona @phasemaster]

Awesome Gilles!!! https://t.co/MR4qfdwnGD

[Johanan Codona @phasemaster]

UofA AO Workshop demo of differential OTF (dOTF). Kudos to students Alex Rodack and Justin Knight. #AdaptiveOptics

[Johanan Codona @phasemaster]

@phasemaster The missing link... https://t.co/ATZkeAxzwt

[Johanan Codona @phasemaster]

Nathan Doble's team studied Stiles-Crawford effect. May help AMD? Directionality of individual cone photoreceptors in the parafoveal region

[Johanan Codona @phasemaster]

I worked with Justin Knight and Olivier Guyon's UA Coronagraphy team to demonstrate spatial deconvolution of dOTF. https://t.co/liBcsmZKxG