User:Ancheta Wis/sandbox
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Thank you for your suggestions for simplifying the problem; as I edit, please fell free to jump in; here is my plan of attack, so far:
- reduce RJ to an efn in Planck's law; leave Planck's law article alone, including history; I'm depending on its previous editors as much as possible
- I plan to lean heavily on Planck 1914 (internet archive), as my copy of Planck 1925 (Dover) lives in some box in the basement (I've been working from visual memory)
- use content of Wien approximation as the skeleton of the efn in #1, as it has a nice approach for 'scale and scope' of the efn. It uses natural units to emphasize what was known at the time, as well as the experimentally-based constants
- Both tails of Planck's law, R-J equation and Wien approximation will be treated in separate efns.
[lower-alpha 1] [lower-alpha 2] [lower-alpha 3] [lower-alpha 4]
- Planck's law Bnu the spectral radiance of a body for frequency ν at absolute temperature T is given bywhere kB is the Boltzmann constant, h is the Planck constant, and c is the speed of light in the medium, whether material or vacuum. The SI units of Bν are W·sr−1·m−2·Hz−1.[1][2][3]
- RJwhere h is the Planck constant and kB the Boltzmann constant. The Planck's law does not suffer from an ultraviolet catastrophe, and agrees well with the experimental data, but its full significance (which ultimately led to quantum theory) was only appreciated several years later. Since,then in the limit of high temperatures or long wavelengths, the term in the exponential becomes small, and the exponential is well approximated with the Taylor polynomial's first-order term,So,
- Wien approximation-- Planck's law may be given as[4]The Wien approximation may be derived from Planck's law by assuming . When this is true, then[4]and so Planck's law approximately equals the Wien approximation at high frequencies.
- RJ Comparison to Planck's law
History of scientific method#Epicurus
In his work Kαvώv ('canon', a straight edge or ruler, thus any type of measure or standard, referred to as 'canonic'), Epicurus laid out his first rule for inquiry in physics: 'that the first concepts be seen,[5]: p.20 and that they not require demonstration '.[5]: pp.35–47
His second rule for inquiry was that prior to an investigation, we are to have self-evident concepts,[5]: pp.61–80 so that we might infer [ἔχωμεν οἷς σημειωσόμεθα] both what is expected [τò προσμένον], and also what is non-apparent [τò ἄδηλον].[5]: pp.83–103
Epicurus applies his method of inference (the use of observations as signs, Asmis' summary, p. 333: the method of using the phenomena as signs (σημεῖα) of what is unobserved)[5]: pp.175–196 immediately to the atomic theory of Democritus. In Aristotle's Prior Analytics, Aristotle himself employs the use of signs.[5]: pp.212–224 [6] But Epicurus presented his 'canonic' as rival to Aristotle's logic.[5]: pp.19–34 See: Lucretius (c. 99 BCE – c. 55 BCE) De rerum natura (On the nature of things) a didactic poem explaining Epicurus' philosophy and physics.
- Asmis, Elizabeth (January 1984), Epicurus' Scientific method, vol. 42, Cornell University Press, p. 386, ISBN 978-0-8014-6682-3, JSTOR 10.7591/j.cttq45z9
paraphrasing Asmis. How do 'its concepts correspond to the words used to state the problem, in order to have standards by which to judge the problem?', as Asmis puts it (pages 10-11)
- The way I read the article, Rust is a vehicle for getting beyond Haskell notation, in the same vein as the informal tone. The Rust syntax is a way of rewriting a functional programming concept using another notation. Monad (functional programming)#Sample adjunct supposition is another vehicle, for illustrating adjunction using bind or
>>=
. That way the article can illustrate the concatenation of parameters, as arguments in a record tuple. This minimizes boilerplate, and also encourages the developer to use more function composition rather than to hard-code special cases.
https://web.archive.org/web/20140125154343/http://www.mda.mil/system/aegis_bmd.html https://news.usni.org/2022/02/02/u-s-offered-russians-aegis-ashore-inspections-to-ease-ukraine-tensions-more-american-troops-headed-to-europe https://getpocket.com/read/3134195958 De-escalation https://www.defensenews.com/industry/2022/12/02/sarcos-defense-to-test-robotic-arm-for-us-army-in-1m-deal/ https://www.airandspaceforces.com/b-21-to-be-capable-of-holding-at-risk-any-target-on-the-face-of-the-earth/ https://armypubs.army.mil/epubs/DR_pubs/DR_a/ARN31331-AR_71-9-000-WEB-1.pdf https://katu.com/news/nation-world/defense-secretary-says-us-in-pivotal-point-with-china-ukraine-russia-vladimir-putin-xi-jinping-authoritarian-values-b-21-raider-nuclear-weapons-hegemony-ronald-reagan-europe-icbms By 2022 the 25th Secretary of the Army, Christine Wormuth was able to announce the top six areas for the Army of 2030:[7] 1) improved Intelligence, surveillance, and reconnaissance (ISR); 2) "Coordination at greater speed";[Note 1] 3) "Win the Fires fight"; 4) §concealment[8] via improved mobility and reduced signature; 5) "talk often and quickly";[9][Note 2] and 6) contested logistics.[7] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [Note 2] [Note 1] [21][22]
- In order for IBCS to track a target, it has to build a software entry showing the candidate target's trajectory over the 15-30 minute flight times during mid-course, to record its track of the target. When C2BMC has acquired the target, C2BMC knows the trajectory. In order to hand over the software entry to IBCS, C2BMC's history of the tracked object has to be reformatted to the IBCS tracking format. It is not clear that the two systems (C2BMC/IBCS) are compatible. If they were, the vendors would have said this already. That is the citation I am seeking. Freedberg's citation says this compatibility exists, only "up to a point".[23] To be specific, let's assume the software entry is a series of XML records. That XML would have to be converted between the two systems. JADC2 would have define the standards for this capability; but that standard has to be agreed upon jointly by the DoD services, and ideally shared with the allies and partners. There is a layer of complexity above this; if I were the vendor, I would encrypt the records; additionally, an adversary could jam the transmissions.
- Remember that the design follows that of the Molten-Salt Reactor Experiment which ran for 4 years. The heat remaining in the largely Thorium mixture would need to decay; the molten fuelsalt will not support fission without its being in the graphite moderator; the U233, U235, etc. are needed for the mixture to be fissile. The Thorcon proposal includes a phase where one Can with fuelsalt gets exercised in a series of tests of the design. The regulators will have to approve those tests, before it is actuallly producing electric power.
- counterfire radar and fire control systems
- AN/TPQ-53 AN/TPQ-50
- ratnik exoskeleton ; rostec; RUSSIA TO DEVELOP BODY ARMOR THAT CAN STOP .50-CALIBER MACHINE GUN
- 1st mdtf army
- First Multi-Domain Task Force plans to be centerpiece of Army modernization
- The Army’s Multi-Domain Task Force (MDTF)
- First Multi-Domain Task Force plans to be centerpiece of Army modernization
- Modernizing Multi-Domain Operations for Large-Scale Combat Operations
- Army to build at least two new multi-domain task forces
- Overmatch is fleeting: How the US Army’s multidomain task force will help the military remain dominant
- Multi-Domain Operations doctrine still a few years out, says US Army chief
- Faggin et al (1996) p.12 has the timing diagram, a chip-level behavioral diagram, showing which chips activate during operation. Busicom understood their calculator application to this level of detail, as they had already implemented an RTL version (not the PMOS version which Intel was to provide). Busicom had provided timing diagrams to Intel previously (1969); so you can imagine Shima's shock in 1970 when he arrived, to see that Intel had not yet followed through, because the project had not yet been staffed, until Faggin's arrival. --Ancheta Wis (talk | contribs) 10:14, 12 January 2022 (UTC)
There is a misstatement in the attempted section on nonlinear MHD: Maxwell's equations are already partial differential equations, and yes they are linear, so the sentences in this section about understandability do not follow. Can we please revert this section and take it to this page? For starters, the Navier-Stokes equations need to be decoupled from the discussion until any phenomenological aspects of MHD are disentangled from it, such as the speed of magnetic reconnection (not currently explained from known models). Otherwise we are starting from confusion.
On the Foundations of National Resistance is a law of Ukraine (Bill 5557) Про основи національного опору, which came into force 1 January 2022.[26] It was passed by the Verkhovna Rada on 16 July 2021, and signed by President Volodymyr Zelenskyy on 29 July 2021.