I guess that explains why many of the lines weren't being plotted correctly.
Notices by Trammell Hudson (th@social.v.st)
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Trammell Hudson (th@social.v.st)'s status on Friday, 13-Jun-2025 04:03:46 JST Trammell Hudson
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Trammell Hudson (th@social.v.st)'s status on Saturday, 07-Jun-2025 20:49:19 JST Trammell Hudson
Almost got impressed into joining the crew of Alex von Humboldt 2 during its stop in Scheveningen
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Trammell Hudson (th@social.v.st)'s status on Friday, 06-Jun-2025 21:05:24 JST Trammell Hudson
my keyboard is getting a bath for its thirty-eighth birthday.
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Trammell Hudson (th@social.v.st)'s status on Thursday, 05-Jun-2025 15:03:39 JST Trammell Hudson
@azonenberg have you seen this one weird trick to reduce the number of vias in your PCB design?
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Trammell Hudson (th@social.v.st)'s status on Tuesday, 03-Jun-2025 06:19:56 JST Trammell Hudson
@jwz what do you have against "Mozilla/4.0 (compatible; MSIE 6.0; Windows 98; PalmSource/hspr-H102; Blazer/4.0)" or "Opera/9.80 (J2ME/MIDP; Opera Mini/4.0.9800/191.379; U; en) Presto/2.12.423 Version/12.16" ?
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Trammell Hudson (th@social.v.st)'s status on Sunday, 01-Jun-2025 23:28:17 JST Trammell Hudson
The US ASCII control characters have official symbols? https://en.wikipedia.org/wiki/ASCII#Control_characters
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Trammell Hudson (th@social.v.st)'s status on Sunday, 01-Jun-2025 18:28:58 JST Trammell Hudson
🚂<zwj>⛰️ should produce a funicular emoji
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Trammell Hudson (th@social.v.st)'s status on Wednesday, 28-May-2025 05:36:57 JST Trammell Hudson
Almost got pounced upon!
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Trammell Hudson (th@social.v.st)'s status on Tuesday, 20-May-2025 23:32:51 JST Trammell Hudson
"Average user has two X1 Carbons" factoid is a statistical error. Thinkpad Georg who hacks on firmware and sleeps on a bed made of bricked laptops is an outlier and should not have been counted.
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Trammell Hudson (th@social.v.st)'s status on Wednesday, 07-May-2025 23:07:01 JST Trammell Hudson
Following up on the original question... Concise Products in Japan seems to still be producing circular slide rules https://www.sliderule.tokyo/products/detail.php?product_id=7
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Trammell Hudson (th@social.v.st)'s status on Wednesday, 07-May-2025 23:06:57 JST Trammell Hudson
The combined Latitude, Declination, LHA grid didn't work, so instead I've added the normal S/ST, and T/T1/T2 scales to allow computation of Hc and Z from the corrected sextant height.
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Trammell Hudson (th@social.v.st)'s status on Wednesday, 07-May-2025 23:06:54 JST Trammell Hudson
Printed and laminated a prototype of my solar slide rule on 350g A3 at the local print shop and it works fairly well! Correcting sextant height for index error, temperature, refraction, height of eye and lower limb is fast, as is computing latitude from the noon sight. Computing Hc and Z is a bit more involved (using additional scales on the reverse side)
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Trammell Hudson (th@social.v.st)'s status on Sunday, 04-May-2025 18:20:37 JST Trammell Hudson
Using a nuke to take down a blimp seems like overkill, but it's the only way to be sure.
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Trammell Hudson (th@social.v.st)'s status on Saturday, 03-May-2025 23:16:54 JST Trammell Hudson
Meanwhile in Amsterdam
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Trammell Hudson (th@social.v.st)'s status on Thursday, 01-May-2025 20:26:39 JST Trammell Hudson
Moore's Law illustrated. #HPC
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Trammell Hudson (th@social.v.st)'s status on Thursday, 01-May-2025 20:26:37 JST Trammell Hudson
But FORTRAN is forever. #HPC
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Trammell Hudson (th@social.v.st)'s status on Tuesday, 29-Apr-2025 19:37:17 JST Trammell Hudson
@quixoticgeek not everything is so evenly divided.
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Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:38 JST Trammell Hudson
Is anyone manufacturing custom slide rules?
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Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:37 JST Trammell Hudson
Now with solar declination and sine/cosine tables (in addition to height of eye correction, refraction, parallax, and upper/lower limb calendars)
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Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:35 JST Trammell Hudson
although this arrangement for the solar declination correction might be better, even though it makes low d changes less accurate.
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