User contributions for Interferometrist
A user with 2,946 edits. Account created on 23 January 2008.
10 December 2022
- 04:4404:44, 10 December 2022 diff hist −35 History of radio →Hertzian waves: Incorrect: microwaves thousands of times longer wavelength than light. Not "close".
1 December 2022
- 23:5323:53, 1 December 2022 diff hist +183 Mie scattering →Scattering and extinction cross-sections: Is also stated in next section, but best to define a mathematical term where it is first used.
- 23:3923:39, 1 December 2022 diff hist −7 Mie scattering →Application to subwavelength particles: Correct heading of section
10 October 2022
- 01:2001:20, 10 October 2022 diff hist +6 m Arago spot →Calculation of diffraction images: wording
- 01:1701:17, 10 October 2022 diff hist −4 Arago spot →Calculation of diffraction images: Reworked explanation of images. Removed my *mistaken* tag, result of not reading carefully.
- 01:0401:04, 10 October 2022 diff hist +285 Talk:Arago spot →Dubious image caption?: Reply Tag: Reply
- 01:0201:02, 10 October 2022 diff hist +206 Talk:Arago spot →Dubious image caption?: Reply Tag: Reply
- 01:0001:00, 10 October 2022 diff hist +425 Talk:Arago spot →Dubious image caption?: Reply Tag: Reply
9 October 2022
- 18:2218:22, 9 October 2022 diff hist +176 Arago spot →Theory: Previous text gave incorrect impression
- 18:1118:11, 9 October 2022 diff hist +806 Arago spot →Theory: Remove link to wrong definition for "wavelet". Look, every equation in this section was probably correctly copied from a book but as a whole has become incoherent and unconcise, and should be reworked and simplified.
- 02:1902:19, 9 October 2022 diff hist +78 Arago spot →Calculation of diffraction images: Dubious "image width corresponds to 16mm" - No looks like horiz. FOV just under twice diameter which =4mm. Or is incident light not collimated? Or did "4" mean Radius?
- 01:5401:54, 9 October 2022 diff hist +702 Arago spot →History: Better (but longer) paragraph putting the *modern* understanding of photons and old corpuscular theory in proper context. Also improved earlier text.
- 01:0401:04, 9 October 2022 diff hist +348 Arago spot →History: dubious. Just from the quotes in the footnotes, those previous experiments hadn't observed the central spot, only radiation inside the shadow, indeed also a diffraction effect, and generously regarded by Arago as a previous test (IF that's what he said). And were long before the rise of the wave theory and prediction of the Arago spot.
2 September 2022
- 13:1613:16, 2 September 2022 diff hist +11 Life expectancy →Calculation: Well of course it is a mortality rate. Or did someone mean that "mortality rate" is per 1000, not percent? Or what?
- 13:0913:09, 2 September 2022 diff hist +11 Life expectancy →Education: Come on: 4 times higher? Something missing or badly transcribed in that statistic. (P.S. I do favor education :-)
- 13:0013:00, 2 September 2022 diff hist +11 Life expectancy →Sex differences: The 2 sentences seem unrelated and confusing. Probably a bad edit in the past removed content needed for the paragraph to flow properly.
- 12:4712:47, 2 September 2022 diff hist +260 Life expectancy →top: Is "shelf life" very well related? Perhaps for perishable food, but for manufactured items that start wearing down during use, it is not an indication of the useful life (starting when put into service) and thus value of the item (as MTBF would be). Or battery life which depends on usage but usually much shorter than the shelf life.
28 August 2022
- 03:4203:42, 28 August 2022 diff hist +383 Microchip implant (animal) →Components of a microchip: {dubious} Absolutely untrue, and I'm sure nothing published in Scientific American would make such a claim. For the chip to be powered up, a strong field is needed that wouldn't be possible from any distance, and certainly not inadvertently. Yes will reradiate an EM wave (as the ref would have been saying) but no more than any piece of metal the same size: not significant
- 03:1403:14, 28 August 2022 diff hist +346 m Continuous glucose monitor →United States: Restore clobbered ref.
- 03:0803:08, 28 August 2022 diff hist +720 Continuous glucose monitor →Device characteristics: Better description of distinction as implantable. Curiously, "Flash" was never applied to the Eversense, as it would have to be if that were a generic term.
- 02:3802:38, 28 August 2022 diff hist +11 Continuous glucose monitor →Device characteristics: ditto
- 02:3502:35, 28 August 2022 diff hist +278 Continuous glucose monitor →United States: "FGM" distinction dubious. It IS continuous, with a new reading available every minute if it is interrogated by a reader from a distance of 1cm, as is possible (but not as used in practice). Only difference is in transmission distance and where data is stored when. A dated distinction.
- 02:2802:28, 28 August 2022 diff hist −22 Continuous glucose monitor →Flash glucose monitoring: Move (old) refs. Slight rewording.
- 02:2202:22, 28 August 2022 diff hist +1,334 Continuous glucose monitor →Flash glucose monitoring: Mention term "FGM" but explain the versions of the one product it was ever applied to. Replaces dated content. Still need to add latest refs.
- 01:1001:10, 28 August 2022 diff hist −612 Continuous glucose monitor →Flash glucose monitoring: Incorrect information, badly dated. Distinction based on early adoption of CGM systems, but FGM only used for Freestyle Libre CGM system, not a generic term (as CGM is). Only difference is where the data is stored for how long, will edit further to clarify.
26 August 2022
- 00:3900:39, 26 August 2022 diff hist +11 C-reactive protein →Diagnostic use: Incompletely written sentence
- 00:3600:36, 26 August 2022 diff hist +11 C-reactive protein →Acute inflammation: Obviously incorrectly worded sentence(s)
23 August 2022
- 01:2401:24, 23 August 2022 diff hist −18 Quantities of information →Self-information: What I meant to write.
- 01:1901:19, 23 August 2022 diff hist +605 Quantities of information →Self-information: I didn't think "That fact is also reflected in the above equation, supporting the validity of its derivation." was so obvious, so here it's spelled out. Also refined previous paragraph.
- 00:3100:31, 23 August 2022 diff hist +18 Quantities of information →Self-information: Correct my own earlier edit, which should have referred to *average* information (=entropy).
21 August 2022
- 22:5522:55, 21 August 2022 diff hist +135 Nat (unit) Undid revision 1105810602 by Interferometrist (talk) OK, I guess that statement is technically correct, though of questionable value, you're more concerned with the entropy and other statistics of a system than assigning a value per message. But ok, sorry for deleting before thinking..... Tag: Undo
- 22:4422:44, 21 August 2022 diff hist +6 Nat (unit) →Entropy: I agree with the mathematical beauty, but wait, how does SI work and who can make such a statement? I don't think SI has units of information, does it?
- 22:4122:41, 21 August 2022 diff hist −135 Nat (unit) →top: Absolutely wrong!! Removed. Can't imagine an everyday example that resolves to 1 nat of entropy. Can you?? Tag: Reverted
- 22:3322:33, 21 August 2022 diff hist −26 Quantities of information →Self-information: Remove unclear wording. I understand what someone was trying to write, and "unrelated" works, but mutually independent perhaps not. For instance if I receive two "mutually independent" measures (thermometers with an error bar) of the temperature in London, I don't have twice as much information. That wouldn't have been clear from the text alone.
- 22:2822:28, 21 August 2022 diff hist +181 Quantities of information →Self-information: ditto
- 22:1722:17, 21 August 2022 diff hist +271 Quantities of information →top: Introduce preferred (or at least, non-ambiguous) unit of information using base-2 logarithms.
- 22:0222:02, 21 August 2022 diff hist +468 Shannon (unit) →Information measures: Replace short mention of entropy vs. source information (a rather esoteric distinction) both using the shannon with more general statements and examples.
- 21:0721:07, 21 August 2022 diff hist +1,576 Shannon (unit) →top: Rework/expand paragraph on conversions
- 20:1120:11, 21 August 2022 diff hist −9 Shannon (unit) →top: Rearrange
- 20:0620:06, 21 August 2022 diff hist +759 Shannon (unit) →top: Rework and enhance first (main) paragraph
- 18:3218:32, 21 August 2022 diff hist +26 Shannon (unit) →top: More directly relevant link. Regrettably, the target page does not even mention Shannons but just "bits" - I'll try to make a quick change.
- 18:2518:25, 21 August 2022 diff hist +13 Shannon (unit) →top: Dead link. However I consider this no loss, since given the primary definition (1st sent.) this statement could be easily derived using information theory.
13 August 2022
- 17:2917:29, 13 August 2022 diff hist +247 Ferromagnetism →Origin of atomic magnetism: Improve/refine explanation
- 17:1517:15, 13 August 2022 diff hist +11 Ferromagnetism →Origin of atomic magnetism: This sounds wrong. Someone please check.
- 16:5816:58, 13 August 2022 diff hist +965 Ferromagnetism →top: Improve description of ferromagnetism macroscopically observed as large permeability, coercivity being a second important property also to be mentioned in lede. General discussion of material magnetism retained but now in new paragraph. Also reworked (but a metallurgist expert in this area could perhaps refine my wording) sentence related to chemical elements involved.
- 15:5415:54, 13 August 2022 diff hist +372 Ferromagnetism →Explanation: This section uses the term "magnetism" incorrectly, just in the context of atomic magnetization but "magnetism" generally refers to the magnetic FIELD due to all CURRENTS, not just those inside atoms. Rest of section and page needs to be more careful of wording. Beyond that I tried to improve the paragraph.
8 August 2022
- 03:2103:21, 8 August 2022 diff hist +100 Quonset hut →Design and history: dubious. That's funny: If a hemi-cylinder has a 20 foot width, then I'd expect its radius to be 10 feet. Or maybe I need to go back and take geometry again, if I'm that confused.......
3 July 2022
- 13:5513:55, 3 July 2022 diff hist +50 Oliver Lodge →Spiritualism: dubious (Re: Hertz), citation is dead link. Hertz died in 1894
14 June 2022
- 14:2914:29, 14 June 2022 diff hist −89 m Bereavement Change redirect to Grief, not a subsection (why was it so?). Terms are synonymous (fine distinction in use described in main article), interchangeably, no reason for redirect to section. Hope template syntax ok. current Tag: Redirect target changed
30 May 2022
- 21:3321:33, 30 May 2022 diff hist +125 Television set →CRT: Improve text
