this post was submitted on 13 Aug 2024
1105 points (99.0% liked)

Comic Strips

23809 readers
2467 users here now

Comic Strips is a community for those who love comic stories.

Rules
  1. 😇 Be Nice!

    • Treat others with respect and dignity. Friendly banter is okay, as long as it is mutual; keyword: friendly.
  2. 🏘️ Community Standards

    • Comics should be a full story, from start to finish, in one post.
    • Posts should be safe and enjoyable by the majority of community members, both here on lemmy.world and other instances.
    • Any comic that would qualify as raunchy, lewd, or otherwise draw unwanted attention by nosy coworkers, spouses, or family members should be tagged as NSFW.
    • Moderators have final say on what and what does not qualify as appropriate. Use common sense, and if need be, err on the side of caution.
  3. 🧬 Keep it Real

    • Comics should be made and posted by real human beans, not by automated means like bots or AI. This is not the community for that sort of thing.
  4. 📽️ Credit Where Credit is Due

    • Comics should include the original attribution to the artist(s) involved, and be unmodified. Bonus points if you include a link back to their website. When in doubt, use a reverse image search to try to find the original version. Repeat offenders will have their posts removed, be temporarily banned from posting, or if all else fails, be permanently banned from posting.
    • Attributions include, but are not limited to, watermarks, links, or other text or imagery that artists add to their comics to use for identification purposes. If you find a comic without any such markings, it would be a good idea to see if you can find an original version. If one cannot be found, say so and ask the community for help!
  5. 📋 Post Formatting

    • Post an image, gallery, or link to a specific comic hosted on another site; e.g., the author's website.
    • Meta posts about the community should be tagged with [Meta] either at the beginning or the end of the post title.
    • When linking to a comic hosted on another site, ensure the link is to the comic itself and not just to the website; e.g.,
      ✅ Correct: https://xkcd.com/386/
      ❌ Incorrect: https://xkcd.com/
  6. 📬 Post Frequency/SPAM

    • Each user (regardless of instance) may post up to five (5 🖐) comics a day. This can be any combination of personal comics you have written yourself, or other author's comics. Any comics exceeding five (5 🖐) will be removed.
  7. 🏴‍☠️ Internationalization (i18n)

    • Non-English posts are welcome. Please tag the post title with the original language, and include an English translation in the body of the post; e.g.,
      Sí, por favor [Spanish/Español]
  8. 🍿 Moderation

    • We are human, just like most everybody else on Lemmy. If you feel a moderation decision was made in error, you are welcome to reach out to anybody on the moderation team for clarification. Keep in mind that moderation decisions may be final.
    • When reporting posts and/or comments, quote which rule is being broken, and why you feel it broke the rules.
Banned Artists

The following artists are banned from the community.

  1. Jago
  2. Stonetoss

It should be noted that when you make reports, it is your responsibility to provide rational reasoning why something should be removed. Saying it simply breaks community rules is not always good enough.

Web Accessibility

Note: This is not a rule, but a helpful suggestion.

When posting images, you should strive to add alt-text for screen readers to use to describe the image you're posting:

Another helpful thing to do is to provide a transcription of the text in your images, as well as brief descriptions of what's going on. (example)

Web of Links

founded 2 years ago
MODERATORS
 
you are viewing a single comment's thread
view the rest of the comments
[–] FiniteBanjo@lemmy.today -1 points 2 years ago (1 children)

The cosmic microwave background has no center, any claims that it even has a direction is controversial.

[–] NoSpotOfGround@lemmy.world 4 points 2 years ago (1 children)

Is it controversial? I thought it was pretty established. In Wikipedia it says:

From the CMB data, it is seen that the Sun appears to be moving at 369.82±0.11 km/s relative to the reference frame of the CMB (also called the CMB rest frame, or the frame of reference in which there is no motion through the CMB). The Local Group — the galaxy group that includes our own Milky Way galaxy — appears to be moving at 620±15 km/s in the direction of galactic longitude ℓ = 271.9°±2°, b = 30°±3°.[88] The dipole is now used to calibrate mapping studies.

[–] FiniteBanjo@lemmy.today -3 points 2 years ago* (last edited 2 years ago) (1 children)

Don't cite Wikipedia. Look at the tiny numbers in blue, click the one next to the statement you want to verify, it will show you the source of the information at the bottom of the page next to the matching number.

[–] NoSpotOfGround@lemmy.world 6 points 2 years ago (1 children)

Well, following the main reference in the Wikipedia page leads to this:

The implied velocity for the Solar System barycenter is v = 369.82 ± 0.11 km s−1, assuming a value T0 = Tγ , towards (l, b) = (264.021◦ ± 0.011◦, 48.253◦ ± 0.005◦) [13]. Such a Solar System motion implies a velocity for the Galaxy and the Local Group of galaxies relative to the CMB. The derived value is vLG = 620 ± 15 km s−1 towards (l, b) = (271.9◦ ± 2.0◦, 29.6◦ ± 1.4◦) [13], where most of the error comes from uncertainty in the velocity of the Solar System relative to the Local Group. The dipole is a frame-dependent quantity, and one can thus determine the ‘CMB frame’ (in some sense this is a special frame) as that in which the CMB dipole would be zero. Any velocity of the receiver relative to the Earth and the Earth around the Sun is removed for the purposes of CMB anisotropy studies, while our velocity relative to the Local Group of galaxies and the Local Group’s motion relative to the CMB frame are normally removed for cosmological studies. The dipole is now routinely used as a primary calibrator for mapping experiments, either via the time- varying orbital motion of the Earth, or through the cosmological dipole measured by satellite experiments.

Do any references suggest this dipole is under debate?

[–] FiniteBanjo@lemmy.today 2 points 2 years ago* (last edited 2 years ago) (1 children)

Here is a paper from University College London LINK

And researcher Saadeh's following interview LINK

Which supports the idea that, based on observed CMB data compared to mathematical models, the universe behaves the same in every direction, an anisotropic model with no preferred motion direction.

[–] NoSpotOfGround@lemmy.world 2 points 2 years ago (1 children)

Ok, I guess the idea that the CMB suggests movement relative to a quasi-absolute reference frame really has become disputed lately... I also found this newer paper by the same authors. It's a pity, I liked the idea.

[–] FiniteBanjo@lemmy.today 1 points 2 years ago* (last edited 2 years ago)

Same, it gave credence to the concept of a potential center of the big bang being something we could find and observe, which is just really cool to think about.