Iceland spar has some unusual light refraction properties v.redd.it/u18d29hz3db81
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πŸ‘€︎ u/MK2640
πŸ“…︎ Jan 13 2022
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r/ThomasPynchon Weekly Announcements | Against the Day Reading Group finishes off Part II: Iceland Spar!

Single up all lines, lads, lasses and landlubbers who transcend such things:

Here be your weekly announcements!

General Announcements

  • All's quiet on the Pynchon front.

Against the Day Reading Group Announcements

  • All the slots for leading discussions are filled, but there is always room for Standby discussion leaders for when folks inevitably have to alter their schedules or drop out. See the schedule and volunteer here if you want to put yourself down for a standby position or take a gander at what is forthcoming.
  • Points of contact for the reading group will be u/ayanamidreamsequence and u/KieselguhrKid13, so if you want to volunteer to lead a discussion, to be put on the standby roster, or to make arrangements to cancel or switch your commitment, contact one or both of them.
  • This past Friday, 14 January, u/bardflight led our group through Sections 27-31 rounding off our discussion of Part II: Iceland Spar.
  • This Friday, 21 January we'll be diving into Part III: Bilocations. Taking us through Sections 32-37 will be u/morphosintax.

Weekly Reminders

  • If you are new to the sub, read our Introductory Post! It is chock-full of everything you need to get up to speed on our subreddit's activities.
  • Did you know the subreddit has an official Discord server? Click here to join!

Keep cool, but care.

- Bloom

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πŸ‘€︎ u/Obliterature
πŸ“…︎ Jan 17 2022
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The refractive property of Iceland spar calcite as displayed with a laser beam passing through the crystal, displaying the crystal's way of splitting light into a Y shape, doubling the image of everything seen through it
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πŸ‘€︎ u/Ravenclaw_14
πŸ“…︎ Oct 25 2021
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The optical effect produced by a type of calcite known as Iceland spar. the crystal refracts light into a Y shape, so everything seen through it appears doubled. Some angles of the stone have it heavier than others, producing the spinning effect seen here v.redd.it/0eu81eiw9nv71
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πŸ‘€︎ u/Ravenclaw_14
πŸ“…︎ Oct 25 2021
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I saw a huge chunk of Iceland Spar in Vienna today! reddit.com/gallery/qw8gsr
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πŸ‘€︎ u/ev29xyro
πŸ“…︎ Nov 17 2021
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Iceland spar! Didn't know the double image would float around like the death note lifespans when the crystal is turned, but I guess we learn something new every day (background is the cover of Battle of the Labyrinth, the fourth book in the Percy Jackson series v.redd.it/qr9t3bqbfov71
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πŸ‘€︎ u/Ravenclaw_14
πŸ“…︎ Oct 25 2021
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Iceland Spar in the wild! Found it today and wanted to but it but shit was expensive! reddit.com/gallery/nugv4m
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πŸ“…︎ Jun 07 2021
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Beautiful Iceland spar reddit.com/gallery/p1rpf9
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πŸ‘€︎ u/Positive_baker69
πŸ“…︎ Aug 10 2021
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Top US, Russia diplomats spar firmly but politely in Iceland abcnews.go.com/Internatio…
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πŸ“…︎ May 20 2021
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Clear calcite, iceland spar. The "shadow" of my finger in the crystal is from a property called double refraction. Vikings would put a black dot on one side of a piece like this, hold it to the sky, and judging by the shade of the "shadow" pinpoint the sun's location during ANY weather. v.redd.it/coc2ztc15hn61
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πŸ‘€︎ u/exp_in_bed
πŸ“…︎ Mar 16 2021
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Is this a clear calcite? vikings used it for navigating the sea by finding the sun on cloudy days. "sun stone" is what they called it or "iceland spar". Idk if this is one, got it as a random v.redd.it/u0qsxcy5nel61
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πŸ‘€︎ u/exp_in_bed
πŸ“…︎ Mar 06 2021
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A fun experiment with Iceland Spar calcite v.redd.it/arkdoed5x2f61
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πŸ‘€︎ u/Ravenclaw_14
πŸ“…︎ Feb 02 2021
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On light and Iceland Spar
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πŸ‘€︎ u/agambrahma
πŸ“…︎ Dec 12 2020
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What is this I think it might be a quartz or an Iceland spar reddit.com/gallery/kvgoiv
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πŸ‘€︎ u/Xander-V-444
πŸ“…︎ Jan 12 2021
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this beautiful piece of iceland spar aka clear calcite is full of rainbows any way u turn it! so perfect! 😍🌈
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πŸ‘€︎ u/lovecasualties
πŸ“…︎ Aug 19 2020
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Iceland Spar?
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πŸ‘€︎ u/inherentbloom
πŸ“…︎ Jan 04 2021
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On "Iceland Spar" in ATD

I feel like an idiot. The first part of this book ("The Light Over the Ranges") was fun, weird, and at the same time accessible. I've spent the last couple days reading about 40 pages of the second part, "Iceland Spar." I'm not sure what the fuck is happening. I'm cool with surreal, absurd, but this may be almost too high brow for me? Am I the only one who felt like they were losing their minds between the first and second parts of this book?

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πŸ‘€︎ u/GoodnightNOLA
πŸ“…︎ May 25 2020
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What is AtD saying about the era of its publication? Also, Iceland spar...

Pynchon uses Iceland spar to directly and most concretely point us towards a doubling and thus an existence that parallels and corresponds to our immediate waking one. Even without this, we know that he used WW2 to address the war in SE Asia in GR, and consistently uses the genre of "historical fiction" to present a double of another era.

It is said that AtD addresses the post 9/11 war on terror. After reading half the novel I returned to the beginning and am now on page 350. I would like to hear what's to be said about the parallels between 1900 and 2000. It's actually very difficult to search-engine this info even within reddit.

Also what is the deeper meaning behind Iceland spar? I have to say that I am having more of a challenging time with AtD than I did with GR.

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πŸ“…︎ Aug 17 2020
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Iceland spar under a warm light bulb
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πŸ‘€︎ u/you_have_time
πŸ“…︎ Jun 21 2020
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Brand new piece of optical Calcite, also called an β€˜Iceland Spar’. Clearer than glass!
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πŸ‘€︎ u/theGardenButcher
πŸ“…︎ Mar 06 2020
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Iceland Spar... almost

Went to the Museo del Instituto de GeologΓ­a de la UNAM in Mexico City today and looked for Against The Day's famous refracting mineral and this is almost it I think. It's a calcite rock like Iceland Spar, though not from Iceland, but the name "calcita optica" does certainly imply it has visually interesting properties. Hope you fellow Pynchonites enjoy!

https://preview.redd.it/esn4t0tg00e41.jpg?width=2448&format=pjpg&auto=webp&s=577714988d5b2b232d8e2fae389144a7e5c4e4cf

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πŸ‘€︎ u/leyendo11
πŸ“…︎ Jan 30 2020
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Check out my Optical Calcite AKA Iceland Spar... natural refraction! v.redd.it/wx4an1s0qbh41
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πŸ‘€︎ u/Asuhhbruh
πŸ“…︎ Feb 16 2020
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Iceland Spar!
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πŸ‘€︎ u/areampersandbee
πŸ“…︎ Jun 21 2019
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Iceland Spar crystal when you put it over text v.redd.it/x20i2e6ieiq41
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πŸ“…︎ Apr 03 2020
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TIL- Leif Ericson discover North America 500 years before Columbus using Iceland Spar, a stone that refracts light in 2 visible wavelengths, enabling him to find the sun on cloudy days. nordskip.com/vkarlsen.htm…
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πŸ‘€︎ u/EgoAltar
πŸ“…︎ Sep 06 2012
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My Optical Calcite/ Iceland Spar showing off cleavage and rainbows
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πŸ‘€︎ u/lifewithdiddy
πŸ“…︎ Oct 10 2019
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Iceland Spar crystal mine at 12,000 feet in the Eastern sierra
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πŸ‘€︎ u/clausenfoto
πŸ“…︎ Jul 10 2018
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Iceland Spar Crystal mine in the Eastern Sierra [2000x1333][OC]
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πŸ‘€︎ u/clausenfoto
πŸ“…︎ Jul 10 2018
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Newly arived Iceland Spar.
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πŸ‘€︎ u/Horn_Unfiltered_2
πŸ“…︎ Mar 20 2019
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Found Iceland Spar in Iceland! imgur.com/OJ2Pzy7
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πŸ‘€︎ u/freia24
πŸ“…︎ Aug 07 2016
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Has anyone tried coating optical calcite // iceland spar in resin? How do you protect yours from scratches?

I do lots of resin casting and was wondering if I could apply a thick coat of resin to my iceland spar to protect it. Hey chemists! Would it adhere? What are other ways of protecting your stone?

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πŸ‘€︎ u/Asuhhbruh
πŸ“…︎ Sep 28 2018
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LensRentals.com - Iceland Spar: The Rock That Discovered Optics lensrentals.com/blog/2013…
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πŸ‘€︎ u/dasazz
πŸ“…︎ Dec 11 2013
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r/ThomasPynchon Weekly Announcements | Against the Day Reading Group launches into Part II of the novel: Iceland Spar!

Single up all lines, lads, lasses and landlubbers who transcend such things:

Here be your weekly announcements!

General Announcements

  • All's quiet on the Pynchon front.

Against the Day Reading Group Announcements

  • All the slots for leading discussions are filled, but there is always room for Standby discussion leaders for when folks inevitably have to alter their schedules or drop out. See the schedule and volunteer here if you want to put yourself down for a standby position or take a gander at what is forthcoming.
  • Points of contact for the reading group will be u/ayanamidreamsequence and u/KieselguhrKid13, so if you want to volunteer to lead a discussion, to be put on the standby roster, or to make arrangements to cancel or switch your commitment, contact one or both of them.
  • u/EmpireOfChairs delivered us a rousing discussion of Sections 11-16 of the novel this past Friday.
  • Look out this Friday, 24 December (Christmas Eve!) for discussion of Sections 17-22 from u/SofaKingIrish!

Weekly Reminders

  • If you are new to the sub, read our Introductory Post! It is chock-full of everything you need to get up to speed on our subreddit's activities.
  • Did you know the subreddit has an official Discord server? Click here to join!

Keep cool, but care.

- Bloom

πŸ‘︎ 6
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πŸ‘€︎ u/Obliterature
πŸ“…︎ Dec 20 2021
🚨︎ report

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