Date: 2023-10-02 02:06 pm (UTC)
nancylebov: blue moon (Default)
From: [personal profile] nancylebov
This
Edited (wrong icon) Date: 2023-10-02 02:08 pm (UTC)

Date: 2023-10-02 02:07 pm (UTC)
nancylebov: (green leaves)
From: [personal profile] nancylebov
This time around I noticed how expressive the stick figure and the e were.

U2 at the Sphere in Vegas looks mind-blowing

Date: 2023-10-02 07:10 pm (UTC)
anef: (Default)
From: [personal profile] anef
And considering that that was recorded on a phone the sound quality isn't too bad at all.

Date: 2023-10-02 09:23 pm (UTC)
bens_dad: (Default)
From: [personal profile] bens_dad
2 .Lamb's rebutal to Mansfield and Wildberger: https://blogs.scientificamerican.com/roots-of-unity/dont-fall-for-babylonian-trigonometry-hype/

Wikipedia also seems to object to M&W.
Edited (typos) Date: 2023-10-02 09:24 pm (UTC)

Date: 2023-10-03 04:28 am (UTC)
channelpenguin: (Default)
From: [personal profile] channelpenguin
Ooh, thanks for that! I hadn't even read the link Andrew posted ... and now I feel I don't need to!

I feel old though + I DID in fact, use trig tables at school, although we just about had affordable scientific calculators available when I was in my teens (and I had one), we were taught to trig do without. I missed slide rules by a few years though. I always thought that a bit of a shame.
Edited Date: 2023-10-03 04:32 am (UTC)

Date: 2023-10-03 07:45 am (UTC)
bens_dad: (Default)
From: [personal profile] bens_dad
I still think M+W was worth reading.

The objections are that a) it isn't new, b) that it isn't trignometry and c) that it isn't history.

M+W admit c) as this tablet doesn't show how the Babylonians used the table.
Since the Babylonians don't use angles, but describe the associated right angle triangle, this is not trig. but working this way you don't put the approximations into the table but get a division out which you can make as accurate as you need.
As far as I can see this exactness *is* new.
Wikipedia mentions a French paper by Proust (not that one) and suggest that it is what we ought to be reading.

I too had tables and calculators at school. I did have a slide rule but using them wasn't part of the syllabus (there existence was). But I also have a desk top hand-crank calculating machine.

June 2025

S M T W T F S
1 2 3 4 5 6 7
891011121314
15161718192021
22232425262728
2930     

Most Popular Tags

Style Credit

Expand Cut Tags

No cut tags
Page generated Jun. 9th, 2025 05:07 am
Powered by Dreamwidth Studios