[-] jadelord@discuss.tchncs.de 31 points 5 days ago

If it is a pay what you want model I am all for it. This would be similar to how elementary OS st

The problem with a fixed price is you have to always calibrate it according to the economy of the user's geolocation. What is cheap for a person from a developed world may be unaffordable for a third world county.

[-] jadelord@discuss.tchncs.de 4 points 5 days ago

The follow up question would be the opposing force which keeps them in orbit(als)? This balance of force was called the planetary model which has this shortcoming that electrons might fall into the nucleus.

If electrons actually followed such a trajectory, all atoms would act is miniature broadcasting stations. Moreover, the radiated energy would come from the kinetic energy of the orbiting electron; as this energy gets radiated away, there is less centrifugal force to oppose the attractive force due to the nucleus. The electron would quickly fall into the nucleus, following a trajectory that became known as the "death spiral of the electron". According to classical physics, no atom based on this model could exist for more than a brief fraction of a second.

https://chem.libretexts.org/Courses/Northern_Alberta_Institute_of_Technology/CHEM1130_Principles_in_Chemistry_I/2%3A_Quantum_Mechanical_Picture_of_the_Atom/2.05%3A_The_Bohr_Atom

I am trying to recall what kind of forces enable the orbitals of electrons according to Quantum Mechanics.

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submitted 5 days ago* (last edited 5 days ago) by jadelord@discuss.tchncs.de to c/askscience@lemmy.world

Or in other words which forces keep electrons in orbitals and prevent it from flying away or crashing into the nucleus according to modern understanding?

[-] jadelord@discuss.tchncs.de 6 points 5 days ago

What I understand is Sheikh Hasina was turning into an authoritarian leader, having ruled from 1996-2001 and then from 2009 onwards. A combined 20 years in total!

She did some good things

In power, she won admiration for stabilising the country, tackling jihadist groups and growing the economy, largely through the garment manufacturing boom. The rate of extreme poverty halved.

some bad

But her rule became increasingly oppressive, with extrajudicial killings and the jailing of political opponents and journalists. There was growing anger about corruption, especially as the economy foundered and living costs soared in the wake of the pandemic.

and really sketchy things

With youth unemployment at 40%, the reintroduction of government job quotas for descendants of those who fought in the Bangladesh independence war in 1971 โ€“ seen as a bung to party supporters โ€“ brought students out in protest.

Source: https://www.theguardian.com/commentisfree/article/2024/aug/07/the-guardian-view-on-bangladeshs-uprising-a-fresh-but-fragile-opportunity-to-renew-democracy

[-] jadelord@discuss.tchncs.de 3 points 6 days ago

It is like the worst sequel to The Martian.

[-] jadelord@discuss.tchncs.de 42 points 1 week ago

The flagship communities are quite alive, but the niche communities have not really taken off. I am talking from both the absence of such communities, and my experience trying to migrate !fluidmechanics. The subreddit has around 10k humans (or bots).

[-] jadelord@discuss.tchncs.de 36 points 2 months ago

It is all AI hype isn't it?

[-] jadelord@discuss.tchncs.de 45 points 6 months ago

And I don't like how sparse the data points are but they went with a wobbly interpolated curve anyway.

[-] jadelord@discuss.tchncs.de 25 points 9 months ago

He was from the future. Look, he's reading from a book made of flexible glowing paper and not flat tablets like we primitive people do.

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Software Horror Game (nlesc.github.io)
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Software Horror Game (nlesc.github.io)
submitted 9 months ago* (last edited 9 months ago) by jadelord@discuss.tchncs.de to c/science@beehaw.org
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Software Horror Game (nlesc.github.io)
submitted 9 months ago* (last edited 9 months ago) by jadelord@discuss.tchncs.de to c/science_memes@mander.xyz
5
36
Getting Water Out of Your Ear (fyfluiddynamics.com)

cross-posted from: https://discuss.tchncs.de/post/1312651

TLDR: To remove by shaking one would need accelerations high as 24g, which can damage the ear. A couple drops of vinegar or alcohol in the ear will lower the surface tension and make the fluid easier to remove

12
Getting Water Out of Your Ear (fyfluiddynamics.com)

TLDR: To remove by shaking one would need accelerations high as 24g, which can damage the ear. A couple drops of vinegar or alcohol in the ear will lower the surface tension and make the fluid easier to remove

89

cross-posted from: https://discuss.tchncs.de/post/479621

Hi all! I defended my Ph.D. thesis back in 2019 and I also served as the creator and moderator for the subreddit r/FluidMechanics for a long time. I think with that I have gathered enough experience and courage to answer some of your queries. Some broad topics that I can answer questions on are:

  • computation fluid mechanics
  • scientific programming and HPC
  • nonlinear shallow water equations
  • statistical description of turbulence: spectra, energy budget etc.
  • experimental methods: PIV
  • stratified turbulence
  • academia
  • navigating your career pre- and post-Ph.D.

Ask away!

10
submitted 1 year ago* (last edited 1 year ago) by jadelord@discuss.tchncs.de to c/lemmytips@discuss.tchncs.de
  • Top: is based on votes or comments or both?
  • What is the difference between Hot, Active, New, Most Comments, New Comments?
13
submitted 1 year ago* (last edited 1 year ago) by jadelord@discuss.tchncs.de to c/fluidmechanics@discuss.tchncs.de

Hi all! I defended my Ph.D. thesis back in 2019 and I also served as the creator and moderator for the subreddit r/FluidMechanics for a long time. I think with that I have gathered enough experience and courage to answer some of your queries. Some broad topics that I can answer questions on are:

  • computation fluid mechanics
  • scientific programming and HPC
  • nonlinear shallow water equations
  • statistical description of turbulence: spectra, energy budget etc.
  • experimental methods: PIV
  • stratified turbulence
  • academia
  • navigating your career pre- and post-Ph.D.

Ask away!

7
The Feynman Lectures on Physics (www.feynmanlectures.caltech.edu)

The classic transcripts of Feynmans Lectures are now open and free! Some chapters are great to get a different perspective on theoretical fluid mechanics.

1
JFM webinar series (cassyni.com)

The JFM webinar series which was a great source of high quality research-based open seminars during the pandemic continues to thrive. It is now hosted in a different platform. It runs every first Friday of the month at 4pm.

view more: next โ€บ

jadelord

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