User contributions for Divenal
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17 September 2020
- 09:0009:00, 17 September 2020 diff hist +526 Astigmatism Mention Stenopaeic slit and its chromatic analogue.
29 August 2020
- 09:3109:31, 29 August 2020 diff hist +320 Astigmatism →Analogy with Chromatic Aberration: add analogy for the two different ways to prescribe cylinder.
28 August 2020
- 15:0015:00, 28 August 2020 diff hist +1,478 Astigmatism Expand a bit on the analogy with chromatic aberration, which I find a lot easier to fit into my head.
7 August 2020
- 17:2417:24, 7 August 2020 diff hist +43 Talk:Optics related math No edit summary current
- 17:2117:21, 7 August 2020 diff hist +199 Talk:Optics related math No edit summary
5 August 2020
- 16:0416:04, 5 August 2020 diff hist +323 User:Divenal/sandbox No edit summary current
- 15:5515:55, 5 August 2020 diff hist +40 m Visual acuity →See Also: add ref to the maths page
- 15:5415:54, 5 August 2020 diff hist +369 N Talk:Optics related math Created page with "{{re|NottNott}}: the server frequently gives error "Math extension cannot connect to Restbase" when attempting to render the math mode stuff. Seems like it's a common issue, e..."
- 15:2615:26, 5 August 2020 diff hist +17 m Optics related math →Diopters are inverse meters: Seems that one should use \text{...} inside math mode to render plain text.
- 15:2415:24, 5 August 2020 diff hist +1,516 Optics related math Updating the visual acuity section. Unfortunately, the wiki frequently gets errors when contacting the server that renders the maths stuff.
- 15:2215:22, 5 August 2020 diff hist +114 Visual acuity →Reading a Snellen chart: Moving some text here from the optic-related-math page.
- 13:1513:15, 5 August 2020 diff hist +37 m User:Divenal/sandbox No edit summary
3 August 2020
- 15:0315:03, 3 August 2020 diff hist +71 User:Divenal/sandbox No edit summary
- 15:0115:01, 3 August 2020 diff hist 0 m User:Divenal/sandbox No edit summary
- 14:5514:55, 3 August 2020 diff hist +530 User:Divenal/sandbox No edit summary
2 August 2020
- 09:5309:53, 2 August 2020 diff hist +568 User:Divenal/sandbox No edit summary
1 August 2020
- 21:4421:44, 1 August 2020 diff hist +628 User:Divenal/sandbox No edit summary
31 July 2020
- 18:0018:00, 31 July 2020 diff hist +130 Talk:Diopters →ratio: add counterpoint reference in blog.
- 17:5317:53, 31 July 2020 diff hist +857 Talk:Diopters →ratio: new section
- 11:4011:40, 31 July 2020 diff hist +2 m Eyeballs →Back-of-the-envelope calculations: typo
30 July 2020
- 19:3819:38, 30 July 2020 diff hist +147 Optics related math →Diverging lens: add alternative viewpoint of how -ve lens work
- 16:0316:03, 30 July 2020 diff hist −40 m Optics related math →Average axial length accomodation/rate of change: don't try to write sentences in math mode.
- 15:0215:02, 30 July 2020 diff hist +22 m Optics related math add a new subsection
- 15:0115:01, 30 July 2020 diff hist +88 Optics related math →Infinity: equivalent to virtual image at - infty
- 13:5813:58, 30 July 2020 diff hist +429 Optics related math Some minor details about the lens diagram that I thought were interesting. Need some more lens pictures to show different configurations.
22 July 2020
- 09:3809:38, 22 July 2020 diff hist −156 User:Divenal/sandbox No edit summary
20 July 2020
- 13:5413:54, 20 July 2020 diff hist +975 User:Divenal/sandbox No edit summary
19 July 2020
- 18:5318:53, 19 July 2020 diff hist +215 Talk:20/x vision →Rewrite? current
15 July 2020
- 17:1917:19, 15 July 2020 diff hist +99 m User:Divenal/sandbox No edit summary
- 16:5416:54, 15 July 2020 diff hist +1 m User:Divenal/sandbox No edit summary
- 16:5216:52, 15 July 2020 diff hist +73 User:Divenal/sandbox No edit summary
- 16:5016:50, 15 July 2020 diff hist +119 N File:Rgsunrise.svg I'm not quite ready to give up on this sunrise-with-gaps idea. I wonder whether adding red/green helps... current
- 16:4816:48, 15 July 2020 diff hist 0 File:Rgfocus.svg Divenal uploaded a new version of File:Rgfocus.svg current
- 12:1012:10, 15 July 2020 diff hist +85 User:Divenal/sandbox Updates to reflected new image size of 256x256
- 12:0712:07, 15 July 2020 diff hist 0 File:Rgfocus.svg Divenal uploaded a new version of File:Rgfocus.svg
- 10:4110:41, 15 July 2020 diff hist +1,406 User:Divenal/sandbox No edit summary
14 July 2020
- 21:1621:16, 14 July 2020 diff hist 0 File:Rgfocus.svg Divenal uploaded a new version of File:Rgfocus.svg
- 19:5719:57, 14 July 2020 diff hist −1 User:Divenal/sandbox No edit summary
- 19:5719:57, 14 July 2020 diff hist +41 User:Divenal/sandbox No edit summary
- 19:5619:56, 14 July 2020 diff hist +93 N File:Rgfocus.svg Quick svg hackup of varakari's focus page
13 July 2020
- 08:4708:47, 13 July 2020 diff hist +362 Vertex distance →Calculation: add note that the equivalence is only for distant objects. current
5 July 2020
- 11:3811:38, 5 July 2020 diff hist +138 User:Divenal No edit summary current
3 July 2020
- 08:2908:29, 3 July 2020 diff hist −94 Vertex distance →Calculation: still hadn't convinced myself with the wording
2 July 2020
- 19:2219:22, 2 July 2020 diff hist +515 Vertex distance →Calculation: add some words to describe what's going on in terms of virtual images.
- 18:5618:56, 2 July 2020 diff hist +441 Vertex distance "corrected" is not the same as "perceived". Also add a few more words.
30 June 2020
- 08:1008:10, 30 June 2020 diff hist +8 Frequently Asked Questions/FFAQ →When do I wear normalized, when do I wear differentials?: surely you need three : diffs, norms and full 20/20 for driving.
29 June 2020
- 08:4608:46, 29 June 2020 diff hist −210 User:Divenal/sandbox No edit summary
27 June 2020
- 18:5218:52, 27 June 2020 diff hist +75 m Optics related math →Infinity: minor rewording, to paint a picture of the object moving towards the lens continuously, rather than just jumping straight from infinity to the focus.
- 16:3416:34, 27 June 2020 diff hist +330 Optics related math →The thin lens equation: mention converging lens with s < f. Could do with some more pictures, really...
26 June 2020
- 21:1821:18, 26 June 2020 diff hist +302 Eyeballs →Parts of the eye: update rod/cone stuff
- 15:1015:10, 26 June 2020 diff hist +4 Optics related math →From blur horizon of naked eye: fixing signs
- 15:0915:09, 26 June 2020 diff hist +51 Optics related math →From 20/20 prescription: got a bit sloppy with signs
- 13:1713:17, 26 June 2020 diff hist +387 Help:How to contribute →Citing papers: how to re-reference something
- 13:0813:08, 26 June 2020 diff hist +683 Talk:Axis No edit summary
- 13:0613:06, 26 June 2020 diff hist +313 m User:Divenal →astigmatism
- 11:3811:38, 26 June 2020 diff hist +81 m Axis mention that they use 180 rather than 0 for some reason
- 11:3011:30, 26 June 2020 diff hist +298 Talk:Axis No edit summary
25 June 2020
- 10:3710:37, 25 June 2020 diff hist +195 Eyeballs →Parts of the eye: add macula and fovea
- 08:4908:49, 25 June 2020 diff hist +585 Talk:Myopic defocus No edit summary
24 June 2020
- 20:0620:06, 24 June 2020 diff hist −67 m Eyeballs →Back-of-the-envelope calculations: just link to the optics-related math page, rather than repeating the thin lens equation
- 19:0419:04, 24 June 2020 diff hist +899 User:Divenal →astigmatism
- 18:2118:21, 24 June 2020 diff hist +365 User:Divenal →astigmatism
- 18:1918:19, 24 June 2020 diff hist +22 User:Divenal →astigmatism
- 18:1918:19, 24 June 2020 diff hist +110 User:Divenal →astigmatism
- 18:1518:15, 24 June 2020 diff hist +102 User:Divenal No edit summary
- 15:1515:15, 24 June 2020 diff hist +93 Optics related math →The thin lens equation: add a picture
- 13:1213:12, 24 June 2020 diff hist −10 m Low myopia fix link current Tag: Redirect target changed
- 10:5410:54, 24 June 2020 diff hist +82 Chromatic Aberration more pictures...
- 10:5010:50, 24 June 2020 diff hist +1,406 Astigmatism →Understanding astigmatism: A first stab at explaining the optics, with pictures, though I could be hopelessly wrong on all this
- 10:0210:02, 24 June 2020 diff hist +94 m Eyeballs →Parts of the eye: add a picture
- 09:1309:13, 24 June 2020 diff hist +419 Help:How to contribute →Formatting: add section on referencing commons images directly.
- 09:0509:05, 24 June 2020 diff hist +216 User:Divenal/sandbox No edit summary
- 08:4208:42, 24 June 2020 diff hist +263 User:Divenal/sandbox No edit summary
- 08:3908:39, 24 June 2020 diff hist +501 User:Divenal/sandbox No edit summary
- 08:0408:04, 24 June 2020 diff hist −20 EndMyopia Wiki/content →Reviews: put in a working link
23 June 2020
- 21:0621:06, 23 June 2020 diff hist −201 User:Divenal/sandbox No edit summary
- 21:0521:05, 23 June 2020 diff hist 0 File:Dd blur tool.svg Divenal uploaded a new version of File:Dd blur tool.svg current
- 19:2719:27, 23 June 2020 diff hist −18 m Review talk:Buying glasses and lenses No edit summary
- 19:2519:25, 23 June 2020 diff hist +251 Review talk:Buying glasses and lenses →As deletion candidate
- 19:2119:21, 23 June 2020 diff hist +2 m Optics related math →From blur horizon of naked eye: fix signs
- 19:2019:20, 23 June 2020 diff hist +3 m Optics related math →From blur horizon of naked eye: typos
- 19:1919:19, 23 June 2020 diff hist +767 Optics related math →From blur horizon of naked eye
- 18:0818:08, 23 June 2020 diff hist +908 Optics related math →From 20/20 prescription: simple geometric argument
- 17:5217:52, 23 June 2020 diff hist +220 Optics related math Add placeholders for calculating correction, so I can flesh them out using the section edit
- 13:2513:25, 23 June 2020 diff hist +57 User:Divenal/sandbox No edit summary
- 13:1813:18, 23 June 2020 diff hist 0 File:Dd blur tool.svg Divenal uploaded a new version of File:Dd blur tool.svg
- 13:1213:12, 23 June 2020 diff hist +70 User:Divenal/sandbox No edit summary
- 13:0913:09, 23 June 2020 diff hist +103 User:Divenal/sandbox No edit summary
- 13:0613:06, 23 June 2020 diff hist +160 N File:Dd blur tool.svg An idea I had for a tool to help find blur point in spite of ghost images etc. Also an excuse to learn svg.
22 June 2020
- 20:1420:14, 22 June 2020 diff hist +273 User talk:Heddy →astigmatism: new section
- 16:2416:24, 22 June 2020 diff hist +498 User talk:Divenal →Eyesight Improvement Equation current
- 13:5513:55, 22 June 2020 diff hist +105 Explainer:The Eyesight Improvement Equation →Correct normalized: normalised = 4m blur horizon ..?
- 13:3413:34, 22 June 2020 diff hist +1 m Optics related math →Infinity: oops - image -> object
- 09:2609:26, 22 June 2020 diff hist +137 Astigmatism →Reducing astigmatism: expand the spherical equivalent a little. 1.5 seems a very big single jump - wouldn't it be better to just go down, say 0.5 cylinder at a time ?
- 09:0709:07, 22 June 2020 diff hist +1,262 Optics related math separate out thin lens equation as a separate section, and flesh it out slightly.
- 08:4108:41, 22 June 2020 diff hist +57 m Explainer:How centimeters relate to diopters add link to the optics math page (for now)
21 June 2020
- 09:3709:37, 21 June 2020 diff hist −498 Bates Method I think it's sufficient to just say that we believe a stimulus is necessary. No need for quite so much detail. (I promise it wasn't just a knee-jerk desire to remove mention of hyperopic defocus !)
- 09:2409:24, 21 June 2020 diff hist +7 m Optics related math →Visual acuity equation: need to multipy rather than divide by 60 to convert degrees to arcminutes. I think it was just misinterpreting the original on the blog page.
- 09:1309:13, 21 June 2020 diff hist +28 m Optics related math add refs section
- 09:0809:08, 21 June 2020 diff hist +24 m Optics related math →Converting from Glasses to Contact Lens Prescription or vice-versa: we hace our own vertex distance page