SciTech Chronicles. . . . . . . . .April 9th, 2025

https://bit.ly/stc040925

#virus #vector-based #T-cell #respiratory #moisture #temperature #instability #latent-heat #transient #temporal #singularities #acceleration #fuel-cell #PEM #fincantieri #decarbonization #1420MHz #redshift #88-108MHz #CubeSats

5 Most #Amazing #Mathematical #Discoveries Made by #Amateurs : Medium

#Singularities Could Be #Doorways to Completely New Realities, #Scientists Suggest : Misc

When you might start #Speaking to #Robots : Tech Review

Check our latest #KnowledgeLinks

https://knowledgezone.co.in/resources/bookmarks

#SGU #TheSkepticsGuideToTheUniverse:
The Skeptics Guide #1024 - Feb 22 2025

News Items: #BirdBrains, Indoor #AirQuality, #Abortions and Infant #Mortality, #BlackHoles Without #Singularities, Banning #Chemtrails; Who's That #Noisy; Your Questions and E-mails: #Asteroid Hitting the #Moon; #Swindler's List: Tax Scams; #Science or Fiction

Webseite der Episode: https://www.theskepticsguide.org/podcast/sgu

Mediendatei: https://traffic.libsyn.com/secure/skepticsguide/skepticast2025-02-22.mp3

The #Zhukovsky #Aerofoil (sometimes transliterated as #Joukowsky from #Russian), is a 2D model of #streamlined #Airflow past a #wing. It uses #ComplexVariable and is an #AnalyticFunction (i.e. #Differentiable everywhere, save at isolated #Singularities). Take a circle in the #ComplexPlane which is not quite centred at the #origin but passes through the #coordinate (1,0) or (z=1+0i).

#MyWork #CCBYSA #AppliedMathematics #WxMaxima #FreeSoftware #Aeronautics #Aerodynamics #LaminarFlow

What if #Singularities DO NOT Exist?

https://www.youtube.com/watch?v=HRir6-9tsJs

#Science #Physics #BlackHole #BlackHoles #Singularity #Astrophysics #Kerr #RoyKerr #Penrose #RogerPenrose #PenroseSingularity #PenroseSingularityTheorem #Geodesic #Geodesics #GeodesicIncompleteness #GR #GeneralRelativity #PBSSpacetime #PBS #MattOdowd

@TruthSandwich This forced me back to Hawking and Ellis.

They say, "One should probably also regard a null geodesically-incomplete spacetime as singular," for a couple of actually not very strong reasons.

(One is: the Reissner-Nordström solution is (a) singular, and (b) timelike geodesically complete but null incomplete. So let's hope the latter implies the former.)

And I guess everyone has just run with that ever since (other than Roy).

#Hawking #Penrose #Kerr #Singularities #Physics

Roy Kerr vs. the singularities

http://www.unitaryflow.com/2023/11/roy-kerr-vs-singularities.html

#BlackHoles #Singularities #KerrMetric #Gravity

By @startswithabang

"Although Roger Penrose won the Nobel Prize in physics just a few years ago for demonstrating how black holes come to exist in our Universe, singularities and all, the subject isn't closed. We've never peered beneath the event horizon, and have no way of detecting what's inside. Using a powerful mathematical argument, [Roy] Kerr argues that singularities shouldn't physically exist. He may be right."

https://bigthink.com/starts-with-a-bang/singularities-dont-exist-roy-kerr/

#BlackHoles #Singularities

@gregeganSF