#art #ukiyo-e #pigment #chemistry #chemie #metallurgy #metallurgie

HISTORY OF TECHNOLOGY IN JAPAN — PRUSSIAN BLUE

Prussian blue or Berlin blue is the oldest modern synthetic color. It has been in use since its discovery in Berlin in 1704. The pigment is made from ferric ferrocyanide.

• see ColourLex “Prussian blue”
• and see Wikipedia “Prussian blue”

CASE STUDY. The history of the use of Prussian blue in Japan is an illustrative example of a process of rapid acceptance. The effects of the use of this synthetic pigment in Japan is a case study in the history of technology. <!—more—>

A “NEW” COLOR. This “new” powdered pigment was imported to Japan from Holland in the 18th century. — see JAANUS (Japanese Architecture and Art Net Users System), “Beronin-ai” ベロリン藍

This hue of blue was used by Katsushika Hokusai in 1831 in his most famous woodblock print, “Under the Wave, off Kanagawa,” also known as “The Great Wave.” Hokusai's popular artwork was the first to exploit the pigment, which had recently become cheaply available from China.

• see British Museum, “Making Waves”
• see Wikipedia “The Great Wave off Kanagawa”
• see Prussian Blue in a close-up detail of Hokusai’s Great Wave:

In Japan, the success of Prussian blue caused a vogue for blue colors in ukiyo-e prints of the late 1820s and 1830s.

• see Wikipedia “Aizuri-e”
• and see JAANUS, “Azuri” 藍摺

QUESTION: Does the story of the introduction and expanding use of Prussian blue provide a good example of STEM-focused evolution? Is it possible that this could become a teaching tool?

QOTO = Question Others to Teach Ourselves?

Editor's Note : This blog post is being prepared to celebrate the research work of our fellow QOTO.org user Chikara, @Chikara@Qoto.org , who has been sharing the fruits of his curiosity and study of the evolution of Technology, Arts and Science in Japan.

I had meant to suggest to him that his posts would look wonderful in a Blog format, and be preserved, made easier to find for anyone interested in following them.

Upon seeing his post of the Prussian Blue history, and the beautiful gravure of the Great Wave, I knew the moment was now.

Thank you, Chikara, for sharing with us all of your findings.

チカラ、私たちとあなたの調査結果のすべてを共有していただきありがとうございます。

Follow Blog via your Fediverse/Mastodon account :

@rgx@write.tedomum.net

This page created entirely in MarkDown language. Thank you for reading, feel free to comment about this post – reach me at my Writer's Lounge.

R.G. @rgx@muensterland.social ^—top of page

A guide written by Mastodon.art administrator.

• This thread contains Suggestions and Guidelines for new Mastodon users, and is copied from the series of Toots posted by @curator@mastodon.art on August 9, 2019.
• Original thread is located here
• All Toot posts are being copied here for easier reading and access by any interested parties. With a big thank you to Rheal, the operator there and author of the posts.

I'm going to start a thread of quick #MastoTips for new users. Apologies for any hiccoughs, these toots aren't planned, so they may seem a little haphazard. 🤔

First of all: Welcome to Mastodon! If you're coming from Twitter you'll find some things very similar. Mastodon is a microblogging platform for sharing thoughts, photos, music, video, etc.

Posts on Mastodon are affectionately called “toots”. You can laugh, it's OK. We found it funny too when we first joined.

The biggest difference between Mastodon and Twitter is that Mastodon is decentralized, and federated. This means that no one person or company owns Mastodon; the larger community (called the “Fediverse”) is made up of hundreds of smaller servers called “instances” which speak (federate) with each other. That means if you're on Mastodon.ART you can still follow users on Mastodon.Social, and so on! You don't have to be on the same instance as your friends to be able to interact with them.

When you open Mastodon you have the option of viewing different timelines. The main three are: Home, Local, and Federated.

Home: This is where you see the toots of people you follow. It works just like your old feed from Twitter did; except you see just their toots, not their faves, no sponsored posts, or random posts Mastodon will think you'll like. It'll just show you what you want to see: the posts of the folks you follow, in chronological order.

Local: This timeline shows you all the public toots of your local timeline. If you're on •ART that means you'll see all the public toots of all the other users of Mastodon.ART. Useful to get to know new people!

Federated: This timeline shows you a whole whack of public posts from instances that are connect to yours. They could be from anywhere, and anyone! This timeline often moves very fast, and shows you toots from many different communities.

Make sure you take a look at your Preferences page; that's the cog icon. You can set up your profile page there, and customize your Mastodon experience to your liking. Try out some of the interface settings, see how they work!

Try out the advanced interface; you can have many timelines open at the same time showing you different feeds. You can also make timelines that follow specific hashtags; you could have a feed just for viewing art tags! Find a way to make it work for you.

Speaking of hashtags: Mastodon's search function doesn't search any and all words in a post, it only searches for public hashtags. So if you want folks to be able to search and find your toots, make sure to use hashtags! #MastoArt and #CreativeToots are popular ones, as are #Art, #FanArt, #CommissionMe, etc.

Use the search bar to see how healthy a tag is to see if it's one that will reach the most people.

When you make a toot you have a variety of options. You can add media (images, video, audio) and polls, just like on Twitter. [ editor note: this can be done via the paperclip icon, or simply clicking inside the toot editor window, and selecting Paste – Control-V for Windows users.]

Clicking the Globe icon will allow you to change the privacy level of your toot. This determines who will see it, and what timelines it'll show up on. Only public posts will be visible to hashtag searches and on federated/local timelines.

The CW icon stands for “Content Warning” . CWing is a HUGE part of the Mastodon experience! More in the next post…

A Content Warning hides the body/media of your toot under a “read more” link. You have the option of adding a descriptive line of text to indicate what's below the “cut”.

CWs are used in many ways: To indicate sensitive content (nudity, negative discussions, potential triggers, etc.), to prevent spoilers, to hide the punchline of a joke, and many more.

CWs are not censors; they're allowing people to opt-in to viewing your content, which goes a long way to making Mastodon a fun and safe place.

When you've added an image to your post you have a few more options.

The most visible is the option to “Mark Media As Sensitive” ; this will hide your image under an overlay, just like a CW. This won't hide your text, but it will allow people to opt-in to viewing an image for whatever reason. (We require this on •ART for nudity, blood/gore, etc. See our CoC Code of Conduct for more on what we allow.

If you mouse-over the thumbnail of your image you'll see more options: “Delete” (self-explanatory!) and “Crop”.

Crop doesn't actually alter your image; it just changes where the focus of the thumbnail is when viewed on the timeline. That way you can choose to have it focus on the face rather than on the, um… naughty bits.

You also have the option of adding an image description. Please do this if you can! It goes a long way to making Mastodon more accessible for folks with screen readers.

All right, that's most of what you need to know to get started… but there's still more!

You can make lists of specific users you follow to make customized timelines.

You can boost/retoot (aka. retweet) people, but you can't quote-retoot them; this is by design. Not allowing quote-retoots cuts down on the amount of “dunking” and harassment.

If you see something upsetting or that violates the rules of your instance, please Report it! Your mods need your help to find that stuff and deal with it.

If you ever need help or have any questions, please feel free to contact me, @Curator, or any of your mods: @EmergencyBattle, @ChrisTalleras, @ScribbleAddict, @adamk678

We work hard to make this place as safe and supportive as possible, and we'd be happy to help you.

Be sure to read through our CoC Code of Conduct and ToS Terms of Service to make sure you're following our rules.

Thank you for being here. We're looking forward to seeing you around the Fediverse!

If anyone else has any good #MastoTips that I've missed, feel free to post about them using that hashtag, and/or respond to this thread. I'll boost them for our new users!

Two more #MastoTips:

Ever make a post, then notice immediately that there's a typo in it, or you forgot to CW something, or or or…? That's what the “Delete & Redraft” function is for!

Click on the menu link in the toot (it looks like an ellipses: “…”) and select “Delete & Redraft” to edit it in the toot compose box. This deletes the toot so you'll lose any favs/boosts, but if you act quick enough it's an easy way to fix mistakes!

Also, if you click the cry-laughing emoji in the toot compose box ...you'll see one of my favourite features: Custom Emoji!!

We have a fine selection of DeviantART Emoticons for those of you who feel nostalgic:

Plus lots of pride heart emojis by our very own @katwylder@mastodon.art

I'm still fine-tuning the rules for adding new ones, but if you see one around the Fediverse/wider internet you like let me know, and I'll check it out and see what I think.

Follow Blog via your Fediverse/Mastodon account :

@rgx@write.tedomum.net

This page created entirely in MarkDown language. Thank you for reading, feel free to comment about this post – reach me at my Writer's Lounge.

R.G. @rgx@muensterland.social ^—top of page