katch wreckSep 10, 2024

`Epicycles are often cited as one of the biggest problems with the Ptolemaic #geocentric model. And that is precisely what Copernicus is taking aim at here. That’s not to say that Copernicus was fundamentally against epicycles. Indeed, his own adherence to uniform circular motion forced him to include #epicycles in his model. But what #Copernicus is criticizing here is the size demanded by the Ptolemaic model for #Venus in particular.`

https://www.universetoday.com/164227/why-did-copernicus-reject-geocentrism/#more-164227

#Ptolemy #Heliocentric #astronomy

Why Did Copernicus Reject Geocentrism?

Popular science history paints a picture of the Greek geocentric model dominating astronomical thought beginning around the 3rd century BCE, and being the favored model for ~1,500 years. Then, suddenly (it suggests), astronomical thought was overhauled at the birth of the Renaissance by brilliant astronomers such as Copernicus, Kepler, and Galileo, all of whom rejected … Continue reading "Why Did Copernicus Reject Geocentrism?"

Universe Today
CubeRootOfTrueMay 29, 2024

I asked ChatGPT about alternative terminologies for dark matter:

Advantages of the Term "Cosmic Gravitational Anomaly"

Neutral and Descriptive:
The term "Cosmic Gravitational Anomaly" is neutral, avoiding assumptions about the nature of the phenomenon, while being descriptive of the observed effects on spacetime.

Encourages Exploration:
By not presupposing that the anomaly is due to matter, it encourages researchers to explore a wide range of possibilities, including energy-based explanations.

Improved Communication:
This term can improve communication with both the scientific community and the public, clearly indicating that the phenomenon is a gravitational effect observed on a cosmic scale.

So from now on it's called CGA. Thank you. #CGA #darkmatter #epicycles #phlogiston

Alec MacKinnonFeb 12, 2024
A planet following its epicycle whose centre (#deferent) follows a circle centred on the Earth, as pictured by people before Copernicus #epicycles #astronomy #precopernicanAstronomy
damian entwistleJan 12, 2024

Today's poem:

Giornata 4
- by Gregory Pardlo

https://www.tumblr.com/ukdamo/739304426215555072/giornata-4?source=share

#GregoryPardio #poetry #patriarchy #religion #derivations #circumlocutions #epicycles #misogyny

Giornata 4

Gregory Pardlo An old husband’s tale reckons that witches are children  of sexless angels and their human eunuchs, angels  whose self-restraint was inversely proportional to the power  to silence…

Tumblr
Show threadmjJan 30, 2023

@Mizmar I'm sure I can find something, if we can narrow down what I'm looking for. Something specific?

To be clear, there is no new model being postulated here, these are just a few empirical facts about the many problems for which we have only complicated toy models for, applicable only in highly simplified, controlled contexts. A pre-Copernican redux of layered #epicycles.

The division of #physics into incommensurable branches is arguably necessary in the early stages of #theory building competition, but after many decades, it's time to take off the training wheels, and expect some #consilience & refinement.

∞ 𝕁uan ℂarlosJan 11, 2023
The beauty of #epicycles! 😃
xameerJun 19, 2021
#epicycles can be represented as a complex #Fourier series; so, with a large number of epicycles, very complicated paths can be represented in the complex plane.
xameerJun 19, 2021
#Epicycles worked very well and were highly accurate, because, as #Fourier analysis later showed, any smooth curve can be approximated to arbitrary accuracy with a sufficient number of epicycle
fflavioMay 16, 2021

https://youtu.be/wRO-LDo0jb8

Another one of my little epicycles going round. Sorry about the selfie.
Playing around with my Casio CDP-S100BKC5 as a midi controller and Garageband (or was it Logic?). Fractal graphics done with Frax.app -sttill in love with this app.
#flavmusic #epicycles #electronic #garageband #logicpro #softwareinstruments #fraxapp

Epicycle 5

YouTube
TevisMar 30, 2018
#hypotrochoids #epicycles #math