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26 June 2024
- diffhist m Walther Nernst 21:46 +4 Cosmia Nebula talk contribs (→Professional career) Tag: 2017 wikitext editor
- diffhist Johnson–Nyquist noise 21:00 −11 Em3rgent0rdr talk contribs (→Derivation of noise power: I forgot to refer to the figure.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:57 +25 Em3rgent0rdr talk contribs (→Derivation of noise power: renaming this power to be both P_\text{RⅠ-to-line} with I'm writing is equal to P_\text{RⅡ-to-line} to make it clear that there are two powers (one from each resistor) being imparted on the line.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:50 +44 Em3rgent0rdr talk contribs (→Derivation of noise power: clarify these modes are for standing waves and link to Normal mode#Standing waves) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:48 0 Em3rgent0rdr talk contribs (→Derivation of noise power: put this description of the bandwidth range in parenthesis.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:46 +3 Em3rgent0rdr talk contribs (→Derivation of noise power: clarify this voltage is a voltage noise represented by the voltage sources.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:38 +14 Em3rgent0rdr talk contribs (→Derivation of noise power: I'm renaming this first power as "P_\text{R-to-line}" because this distinction is crucial to understanding why the "4" later appears in the voltage variance. Nyquist's glosses over this, but it has to do with the fact that the power from one resistor is divided into two halves because there are two destination resistors.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:33 +29 Em3rgent0rdr talk contribs (→Derivation of noise power: I added voltage sources to my svg, since seeing them identified with names will help.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:18 +4 Em3rgent0rdr talk contribs (→Derivation of noise power: "now" for emphasis on the change) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:18 +18 Em3rgent0rdr talk contribs (→Derivation of noise power: shorten wording on no signal reflections.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:16 −14 Em3rgent0rdr talk contribs (→Derivation of noise power: make caption wider and slight tweaking) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:10 +4 Em3rgent0rdr talk contribs (→Derivation of noise power: clarify on the short circuting.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 20:07 +399 Em3rgent0rdr talk contribs (→Noise voltage: Clarify what is *energy* and what is *power* in this derivation (based on Nyquist 1928's page 112). (Also using 10,000 ohm resistor as a better example because sqrt(10,000)=100.) Tag: Visual edit
- diffhist Exponential function 19:10 +5 Quantling talk contribs (→Formal definition: Make it really clear that at this point we mean e^x as an actual exponentiation (exp 1)^x rather than a textural rewrite of the just defined exp(x) function.)
- diffhist Exponential function 18:57 +23 Quantling talk contribs (The antecedent is the exponential function not the inverse function)
- diffhist m Exponential function 18:53 −4 Arjayay talk contribs (Duplicate word removed)
- diffhist Exponential function 18:37 −106 Quantling talk contribs (→Formal definition: Why restrict x to be a real number and then argue that the restriction is not needed? Instead start with arbitrary x.)
- diffhist Johnson–Nyquist noise 18:35 −24 Em3rgent0rdr talk contribs (→Noise voltage: "A noisy resistor" is what more exactly is being represented.) Tag: Visual edit
- diffhist Exponential function 18:31 +18 Quantling talk contribs (→Formal definition: Works for all complex numbers)
- diffhist Exponential function 18:28 +144 Quantling talk contribs (→Formal definition: It needs to be proved that exp(x) = exp(1)^x)
- diffhist Exponential function 18:17 −15 Quantling talk contribs (→Formal definition: Indicate that this is presented because it is another common characterization. Domain of x is already known.)
- diffhist Exponential function 18:15 −480 Quantling talk contribs (→Formal definition: Insufficiently noteworthy)
- diffhist Johnson–Nyquist noise 18:06 +7 Em3rgent0rdr talk contribs (→Noise voltage: improve my grammar) Tag: Visual edit
- diffhist Johnson–Nyquist noise 18:05 +4 Em3rgent0rdr talk contribs (→Derivation of noise power: hyperlinking variance) Tag: Visual edit
- diffhist Johnson–Nyquist noise 17:57 −128 Em3rgent0rdr talk contribs (→Derivation of noise power: As far as I can tell, this equation is based on "one-sided" frequency. So I'm removing my clarification needed tag and replacing with a side note that this article is using "one-sided" frequency only. So now don't need to later talk about "one-sided".) Tag: Visual edit
- diffhist Johnson–Nyquist noise 17:49 +24 Em3rgent0rdr talk contribs (→Derivation of noise power: some tweaking on the number of frequencies being "so great".) Tag: Visual edit
- diffhist Johnson–Nyquist noise 17:44 +392 Em3rgent0rdr talk contribs (→Derivation of noise power: Added more to caption about the number of vibrational modes being large enough to be a continuous spectrum and added a citation to some mit person's notes which seem summarize this well.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 17:32 +129 Em3rgent0rdr talk contribs (→Derivation of noise power: add that the length is sufficiently long and the number of modes.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 17:21 +973 Em3rgent0rdr talk contribs (→Derivation of noise power: read the Nyquist paper and made a diagram of the two resistors connected to a transmission line, which seems to be a key part of his derivation, and tried to summarize this derivation in the caption.) Tag: Visual edit
- diffhist Vladimir Arnold 14:07 +109 179.152.13.147 talk (→Selected bibliography)
- diffhist Enriched uranium 13:04 +33 Shellypls talk contribs (→Global enrichment facilities) Tag: Visual edit
- diffhist Albert Einstein 11:20 −3 Remsense talk contribs (Undid revision 1231027280 by Reaper1945 (talk): better as it was; break created a paragraph leading with pronoun rather than direct reference) Tag: Undo
- diffhist m Protein 10:44 +33 Hallsy98 talk contribs (Added internal links) Tag: Visual edit
- diffhist Johnson–Nyquist noise 04:37 +33 Em3rgent0rdr talk contribs (→Noise voltage: oops didn't mean to delete →Noise current: section label.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 04:32 −68 Em3rgent0rdr talk contribs (→Noise voltage: the 50 Ω per 1 Hz is useful, but the article didn't explain why this is useful. So I gave the math that the result is approximately sqrt of the factor larger. Use better example than the 1 kΩ at 10 kHz that works easier for this back-of-the-envelope by simply having both be 1000 times larger, so their sqrt is 1000.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 03:45 +10 Em3rgent0rdr talk contribs (→Noise power in decibels: change section name to →Noise power in decibel-milliwatts: because these units are technically not exactly decibels (which is a relative unit) but rather a derived absolute unit.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 03:25 −3 Em3rgent0rdr talk contribs (→Maximum transfer of noise power: grammar: "each" (singular) "dissipates") Tag: Visual edit
- diffhist Johnson–Nyquist noise 03:21 +191 Em3rgent0rdr talk contribs (→Derivation of noise power: I'm adding a clarification needed because I'm can't tell if this is for "one-sided" or "two-sided" frequency? Two-sided amplitude would be half as big as one-sided, so it seems important to clarify which.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 03:14 +17 Em3rgent0rdr talk contribs (→Maximum transfer of noise power: the "Pierce: Physical Sources of Noise" top of page 605 doesn't word it like this, but basically supports this statement on matching impedance giving maximum power, so copying the citation to it.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 03:07 −1,100 Constant314 talk contribs (→Continuous electrodynamic media: Doesn't actually tell the reader anything.)
- diffhist Johnson–Nyquist noise 03:01 +23 Em3rgent0rdr talk contribs (→Noise voltage: the "one-sided" term was never explained...I made a short section Spectral density#One-sided vs two-sided and am linking to that.) Tag: Visual edit
- diffhist Latin 02:44 +9 ChesterChow talk contribs (→Use of Latin for mottos: fix link title) Tag: Visual edit: Switched
- diffhist Johnson–Nyquist noise 01:47 +21 Em3rgent0rdr talk contribs ("is proportional to" is more informative than just "increases with".) Tag: Visual edit
- diffhist Albert Einstein 01:35 +3 Reaper1945 talk contribs (Break-up to make more clear for readers.) Tags: Reverted Visual edit Mobile edit Mobile web edit
- diffhist Philosophical Transactions of the Royal Society A 01:34 +268 Headbomb talk contribs (Standardizing infobox journal with (infoboxJournal.js))
- diffhist Philosophical Transactions of the Royal Society 01:33 +2 Headbomb talk contribs (Philos.) Tag: Manual revert
- diffhist Johnson–Nyquist noise 00:56 +11 Em3rgent0rdr talk contribs (→Derivation of noise power: Instead of "N" for noise power, use "P_n", so matches similar form as v_n and i_n. Anyway the "Pierce: Physical Sources of Noise" calls it "P" and also later on when talking about maximum transfer of power uses "P".) Tag: Visual edit
- diffhist Metal 00:53 +80 Ldm1954 talk contribs (→Alloys: minor tweak) Tag: 2017 wikitext editor
- diffhist Johnson–Nyquist noise 00:50 +43 Em3rgent0rdr talk contribs (→Derivation of noise power: copying exactly how the "Pierce: Physical Sources of Noise" article writes about independence to the resistance.) Tag: Visual edit
- diffhist Johnson–Nyquist noise 00:36 −73 Em3rgent0rdr talk contribs (→Maximum transfer of noise power: oops fixed my naming Rth) Tag: Visual edit