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Light Pollution from Skyglow Changes Bird Behavior
Animals evolved for millions of years to live under naturally dark skies. But in the last few decades, humanity has directed more and more lighting into the sky, creating light pollution that has been proven to confuse many animal species. A new study looked at the behavior of birds that feed at dawn and dusk and the impact of light pollution on their behavior. The researchers found that the effect is complicated, with skyglow creating brighter conditions under overcast skies compared to regions without light pollution, and changed the birds' choices for when to fly.
sciencedirect.com/science/artiβ¦
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Are you one of the 100,000? π
@NASAArset provides trainings in multiple languages to help people around the world learn to use Earth observations! #OpenScience
[Video embedded in original tweet]
#NASAEarth
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Welcome to the fediverse BBC!
@BBCRD
@BBC5Live
@BBCRadio4
@BBCTaster
@Connected_Studio
@BBC_News_Labs
bbc.co.uk/rd/blog/2023-07-mastβ¦
The BBC on Mastodon: experimenting with distributed and decentralised social media
Trialling ActivityPub and the federated model for social media and it's possibilities for the BBC.BBC R&D
This comes in at exactly the right time for our webinar on the fediverse for Canadian media, tonight 31 Jul 2023 at 7PM ET/4PM PT.
It's free, we're not selling anything, and we'd love to have media and civil society people present.
Federated Social Media for Canada
Join Evan Prodromou as he describes the ActivityPub standard, the fediverse landscape today, and how Canadian news, civil society, and all levels of government might connect with social media that can be owned and be interoperable, rather than use prβ¦lu.ma
Grab a File
Grab a file. Documentary ''Earth'' Part 5. Human.
send.trom.tf/r/Mg8xSSJRLY#o3bFβ¦
#documentary
#file
#bbc
#earth
Grab a File
Grab a file. Documentary ''Earth'' Part 3. Green
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I may have found an alternative solution to my blog's commenting system! πΊ
The synchronization of comments from my Mastodon account. It's something I tried and abandoned, but I'm giving it another try after reading your comments. Well, I explain more on the blog and also share the source code:
Blog post, source code, and demo:
β davidrevoy.com/article981/i-maβ¦
Bonus: Because I'm happy, here's a happy Mastodon mascot as a postman that I painted this morning.
#blog #selfhosting #php
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great I had it setup on one of my blog, with a bridge, you could copy not just replies but also favorites to your blog.
See a quick example on my site (integrated via JavaScript): marisa.club/a-new-adventure/
A new adventure on static site generation
A post on setting up the Zola static content generator for my personal site.marisa.club
I feel like Lemmy or Kbin would make more sense for this but I guess ActivityPub makes it irrelevant since they can interact anyway
Excellent idea!
@jherazob I tried to answer from my Lemmy account (a bit abandoned), and I can't. But it's quite possible that I'm not going about it the right way.
Cool that you managed to get this to work!
I think the authentication token is also necessary for mastodon instances that have authorized fetch enabled, because the point of that is to ensure randos don't just get to have info without the server being sure said rando isn't trying to block evade or whatever, but not 100% sure.
J'espΓ¨re que l'on aura, Γ terme, plus d'implΓ©mentation activityPub depuis les sites de blog (je crois que WordPress le propose depuis peu) pour que le post avec un lien vers le billet de blog puisse Γͺtre directement le contenu du blog. Ce serait gΓ©nial d'arriver jusque lΓ !
It's nice to see another implementation of blog comments using the Mastodon "context" API. π I use it for fietkau.blog in a similar way. I additionally filter the replies by visibility and only show the ones set to "public".
If you'd like to read more about how to render custom emoji and other details, I recommend @cassidy's blog post about his implementation: cassidyjames.com/blog/fediversβ¦
Julianβs Blog
This is my place for long-form writing on technology, academia, games, and whatever else I may be thinking about.Julian Fietkau
Thanks!
An improvement idea: A JavaScript "Copy" button to copy the post's URL. Or copy it as an on-click event on the link's text.
Instructions: w3schools.com/howto/howto_js_cβ¦
How To Copy to Clipboard
W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.www.w3schools.com
@yoyunix Thanks. To be fair, I doubt it will last long. Accidents of instance can happen, losing all comments, or the service might also go sunset and be replaced by a new tech more lightweight in the future. Maybe the API will change too with the new versions, up to a point it's too hard to follow for my low skill.
Right now my system on the blog has a cache of 1h for the post of the week, 4h for the post of the month, and 12h after that. Let see in 5 years if If Mastodon IDs are stable π
Great. I was gonna suggest that adding activitypub replies to the post was best till you said you'd already tried it.
Glad you've found a way that works.
@utopify_org Hey, Good question. I thought a lot about this. It's because of five good reasons:
1. Bandwidth (with many visitors, hot-linking them to all instance all the time is pretty heavy)
2. Privacy. Hotlinking them would give also log to instance owners of who connect to my website.
3. Loading speed: waiting for all servers to get pictures.
4. Copyright, and/or trolling possibly with p0rn or gore.
5. Aesthetic: I love the cat avatars peppercarrot.com/extras/html/2β¦ π
wow, okay, a lot of stuff I wouldn't even thought of until I would run into it.
Thanks for the explanation.
This is awesome! ππ€
Given you said spam was a problem with the previous commenting system, does this mean you consider Mastodon to be reasonably free from spam?
I sort of live in fear that Mastodon might suffer an influx of bots. Especially given it's decentralised, so presumably any instance could contribute unless your instance admin defederates from them.
I received insult, p0rn, spam, but very rarely, and it was removed after a simple click on the three dots and reporting them. Actually, I wish this post will attract one or two post of this type. I'm curious if the API would list the message if I block an account.
see also mastodon.blaede.family/@cassidβ¦
Iβve promised enough people this, so I had to do it! πHereβs my write-up of how I added client-side Fediverse-powered comments to my Jekyll blog using the Mastodon API.
Huge props to @jwildeboer for the initial inspiration, as well as @julian and everyone who provided feedback for inspiring the design improvements.
cassidyjames.com/blog/fediversβ¦
β¨π¬ Reply to this thread then check the blog post comments to see it in action!
#Mastodon #Jekyll #WebDevelopment #ActivityPub #design
Toot toot! Mastodon-powered Blog Comments
The Fediverseβand Mastodonβs APIβis magic for static Jekyll sitesCassidy James Blaede
En passant, je suis ravi que tu aies trouvΓ© un autre moyen de rester au courant des opinions de tes lecteurs.
@raghukamath Hey, yes. The listing on the blog is just a copy of the Mastodon API, so every edit or removal should be reflected on the blog as soon as the blog updates.
The only thing to keep is a cache of maximum 24h so it is always removing or applying the edit into the due 24h legal date.
I'm planning to add soon an 'emergency refresh' button (just an action that force a cache update for the current article. It might be convenient in case of a very nasty comment. πΊ
aren't the old comments re-federated? There might be a chance you can still get them back. Except those made by people in the instance that had the problem, I would guess the others should federate again.
Or maybe there is an issue with that as the initial post you made is lost? (So all comments along with it have no real reference).
I'll try to update a tiny bit the display part of the code this afternoon/evening (on the same page) : I had feedback on how to improve security and also I found aesthetic improvements for situations I met on the way (eg. differentiate video/image/other in attachment, or removing direct/private message from the listing with the token).
David Revoy / MastoComBlog Β· GitLab
A Php script that fetch and displays the comments received from the Fediverse. It requires a Mastodon account and posting on it to get the post ID.GitLab
@remram44
These bold explorers (or, not so bold, no judgment) will go where humans can't to explore real exoplanets. Check them out and take our quiz to see which Exoplaneteer YOU are: exoplanets.nasa.gov/exoplaneteβ¦
#NASAExoplanets
The Exoplaneteers | Explore β Exoplanet Exploration: Planets Beyond our Solar System
Four brave explorers, the Captain, the Brain, the Scout, and the Friend, find themselves flung onto different exoplanets. Separated by space, the Exoplaneteers search for signs of life, or friends, while facing the dangers of these strange worlds.Exoplanet Exploration: Planets Beyond our Solar System
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A fusion rocket designed to travel 500,000 mph is under construction
British startup Puslar Fusion is developing a fusion rocket it says will travel 500,000 mph, expanding our reach throughout the solar system.Kristin Houser (Freethink Media)
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Grab a File
Grab a file. Documentary ''Earth'' Part 1. Inferno.
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Applications for the #BlueBookTraineeship starting in March 2024 are now open!
Want to take your career to the next level? We have your desk ready and waiting for you!
β Open to all #university graduates of at least 3 years of study.
β No prior work experience in excess of 6 weeks in any #EU institution.
β No age limit to participate.
Apply by 31 August!
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Grab a File
send.trom.tf/r/uuKaYfytaB#NqeBβ¦
#documentary
#file
#mkv
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How can astronomers know exactly how hot stars are? You can guess from their colors, but to get a precise measurement, you have to look at their spectra.
We spread out the light from the stars into a rainbow-like spectrum and look for patterns of lines, made by different elements and molecules in the star's outer layers. The presence or absence of lines tells you the precise temperature.
1/
Download video: webbtelescope.org/contents/medβ¦
#astronomy #Astro101 #stars
Here are some actual stellar spectra, arranged by temperature. The hottest stars are at the top, coolest stars are at the bottom. The letters on the left are βspectral types,β a classification of stars based on their spectra.
Note how certain lines appear and then fade out as we go down in temperature. Most of the lines are caused by single elements. At the very bottom, we start to see bands of lines. Those are from molecules in the outer layers of stars.
2/
Image from: noirlab.edu/public/images/noaoβ¦
Why do we see lines? We will have to get into a little atomic physics.
As starlight shines through the outer layers of the star, the gas there will absorb photons that have exactly enough energy to bump their atomsβ electrons up to higher energy levels. The energy levels are different for each type of atom.
Since there are fewer photons at certain wavelengths that leave the star, we see narrow, dark lines.
3/
Learn more: webbtelescope.org/contents/artβ¦
Very interesting and well explained!
This is also interesting in the context of #astrophotography where we are capturing the light emitted by the inverse phenomena in emission nebulae (explained in the linked article).
Is there a standard nomenclature for these absorption/emission lines, e.g. alpha & beta for hydrogen vs iii in Oiii for Oxygen emissions? Does it correspond to the number of energy level changes the electrons undergo?
There is a system, it is confusing.
Hydrogen lines get their own names.
At visible wavelengths, the Balmer series is the most important (HΞ±, HΞ², HΞ΄, etc.)
At UV wavelengths, the Lyman series is important (LyΞ±, LyΞ², LyΞ΄, etc.)
And at IR wavelength the Paschen series is important (PaΞ±, PaΞ², PaΞ΄, etc.)
en.wikipedia.org/wiki/Hydrogenβ¦
1/
Most other elements are designated by their ionization state and wavelength in angstroms. For example: HeII 4686
He I = neutral helium
He II = singly-ionized helium
He III = doubly-ionized helium
2/
Some lines are known as forbidden lines. These are normally disallowed, by the rules of quantum mechanics, but can be quite common in the very sparse gas found in astronomical objects, like nebulas. en.wikipedia.org/wiki/Forbiddeβ¦
These are designated by brackets. One common forbidden line is the oxygen doublet [OIII] 4959 and [OIII] 5007
3/
Except for the forbidden lines (which are only emission lines), these names are used for both absorption and emission lines.
4/
Follow-up question:
In the different emission nebulae images taken with the NIRCam instrument (like webbtelescope.org/contents/medβ¦), what emission lines are captured?
Do the hydrogen an other atoms also emit in infrared?
Looking up the Balmer series on Wikipedia, the hydrogen emission lines start in the visible (red) and extend into UV but not in IR.
Greece calls for help. And the EU answers.
As wildfires are ravaging Attica, π¬π· requested the activation of the #EUCivilProtection Mechanism yesterday.
We are responding by:
βοΈ deploying 4 Canadairs from our fleet based in France and Italy;
π©βπ π¨βπ sending three firefighting teams from Poland, Romania and Slovakia for a total of 220 firefighters and 65 vehicles.
In addition, three pre-deployed firefighting teams from Romania, Bulgaria and Malta are already in action.
π·Β©οΈ Getty images
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Canada would be more than happy to help to thank you for the assistance received lately (If only we had #Wildfires under control & could spare teams & equipment)
Stay safe there !
@EU_Commission@social.network.europa.
Maybe is it time that some real urgent measures are taken. Our house is in fire. And we only have one.
Meta - the tech giant from Silicon Valley that is heavily criticized for privacy violations - is finally seeing some real headwind; but not from the EU. The small country of Norway is taking on the tech giant.
Will David be able to bring down Goliath?
tutanota.com/blog/facebook-insβ¦
Facebook & Instagram fined: How the small country of Norway could finally break Meta's business model.
With a fine of only $100,000 Norway could destroy Facebook's & Instagram's business model relying on personalized ads.Tutanota
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β¨ Limited Edition.
π¦ Featuring 12 tarot cards,
Detail in all its glory.shop.sylvia-ritter.com/product⦠#art #mastoart #tarot #animals
2024 Tarot Cards Calendar - Limited Edition
Out now! This calendar includesΒ tarot deck illustrations from my tarot deck in development. - Limited Edition of 100 calendars. - All calendars will be signed and numbered by the artist.Sylvia Ritter Art & Illustrations
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The climate tipping points
#climate
#tippingpoints
#TradeRuinsEverything
#earth
#science
#bbc
BBC Sounds - The Climate Tipping Points - Available Episodes
Listen to the latest episodes of The Climate Tipping Points on BBC SoundsBBC
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Space Hobo
in reply to Doctor Deathray • • •Doctor Deathray
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in reply to Doctor Deathray • • •[Image description: the 1955 Huffy Radiobike, a red coaster-style bike with cream and chrome accents. A radio with a speaker and volume and tuner dials is incorporated into the curvy frame, below the top tube. There is a battery pack on the rear rack.] #Alt4You
More information and pictures: onlinebicyclemuseum.co.uk/1955β¦
1955 Huffy Radiobike β The Online Bicycle Museum
The Online Bicycle Museumlunchmeat
in reply to Doctor Deathray • • •Doctor Deathray
in reply to lunchmeat • • •duke itch / juke itch
in reply to Doctor Deathray • • •Video Not Available
YouTubeDoctor Deathray
in reply to duke itch / juke itch • • •duke itch / juke itch
in reply to Doctor Deathray • • •