54 Matching Annotations
  1. May 2025
    1. Full operational radio teller switching facilities became available in 1984, which have supported electricity demand management for over 40 years. Radio teller switches in device used primarily to allow electricity suppliers to switch large numbers of electricity meters between different tariff rates by broadcasting an embedded signal in everyday radio broadcast signals.

      Radio Teller Systems origin

  2. Feb 2025
    1. The modern touch screen uses static electricity to function. Your smartphone has a capacitive touch screen. This conductive material stores the static from your finger in an electrostatic grid of tiny wires inside your phone. When you touch the screen, you complete an electrical circuit and cause a voltage drop on that section of the screen. The internal software processes where your finger is and executes a command in milliseconds.

      https://www.ioniser-pro.co.uk/news/the-positives-and-negatives-of-static-electricity/

    1. With some sometimes tortuous explanations, the author discusses the issue of static electricity generation in ductwork. He uses logic, basic physics, and some equations to describe electron density, migration, and grounding within typical 4" PVC ducting attached to dust collectors. He concludes that it is effectively impossible for the static charge inside the duct to cause a spark, combustion, or explosion within the flowing air and entrained wood chips. I think he said (I read it a few minutes at a time, when time allowed) that it is entirely possible to receive a static shock from the outside of the ducting.

      https://ncwoodworker.net/forums/index.php?threads/dust-collector-and-static-electricity.74235/

    1. Der Welt-Electricitätsbedarf wird bis 2027 umjährlich 4% wachsen. Das sagt die ERA in ihrer neuesten Prognose voraus. Bisher war sie von 3,4% ausgegangen. Der wachsende Bedarf lässt sich durch erneuerbare Energien decken. ohne massive zusätzliche Investitionen würde dann aber der Bedarf an Facilenenergien gleich bleiben. https://www.theguardian.com/business/2025/feb/14/electric-cars-datacentres-new-global-age-of-electricity

  3. Nov 2024
    1. The blog does not detail how the cabinets are connected. Adrian said that, in future, the disaggregated power racks will allow AC inputs to be converted into 400Vdc. Current power solutions convert into 48Vdc, and Adrian argues 400V will be crucial for building more powerful and efficient AI systems. “With 400V we expect improvements and incremental evolution in improved efficiency, like what we have seen in the 48Vdc conversion space,” he said.

      If you have higher voltage, you can run lower current, and lower current means less resistance, which means less waste heat. Is that how it works?

  4. May 2024
    1. Erschienen: 2024-05-08 Genre: Studien-Report Die Autor:innen des neuen Global Electricity Reports des Thinktanks Ember gehen davon aus, dass 2023 der Höhepunkt der Treibhausgas-Emissionen durch die Stromerzeugunng erreicht wurde. Erstmals stammten 30% des weltweit erzeugten Stroms aus erneuerbaren Energien. Hinzu kommen fast 10% Strom aus Kernkraft. Die Kohlendioxidemissionen aus der Stromerzeugung erreichten allerdings ebenfalls einen Rekord, weil der Strombedarf stieg.<br /> https://www.zeit.de/wissen/umwelt/2024-05/gruener-strom-klimapolitik-energiewende-klimaschutz

    1. Die amerikanische Behörde zur energieregulation Regulierung hat die Bestimmung für Stromnetze radikal reformiert um die Produktion erneuerbarer Energien zu fördern. Unter anderem müssen Netzbetreiber für den voraussichtlichen Bedarf in 20 Jahren planen. Einer neu einen neuen Bericht zufolge werden 50% der positiven Effekte des Inflation reduction Act für die Senkung der Emissionen verloren gehen wenn die amerikanischen Stromnetze nicht grundsätzlich gründlich überholt werden. https://www.nytimes.com/2024/05/13/climate/electric-grid-overhaul-ferc.html?region=BELOW_MAIN_CONTENT&block=storyline_flex_guide_recirc&name=styln-climate&variant=show&pgtype=Article

  5. Feb 2024
  6. Jan 2024
  7. Nov 2023
    1. It should be noted that in France, regulations do not allow this market-based approach when reporting company level CO2e emissions : “The assessment of the impact of electricity consumption in the GHG emissions report is carried out on the basis of the average emission factor of the electrical network (…) The use of any other factor is prohibited. There is therefore no discrimination by [electricity] supplier to be established when collecting the data.” (Regulatory method V5-BEGES decree).

      Companies are barred from using market based approaches for reporting?

      How does it work for Amazon then?

  8. Oct 2023
  9. Jan 2023
    1. all the new electricity generation installed worldwide 90 percent of it was renewable it's now the cheapest source of electricity in almost the entire 00:39:05 planet secondly electric vehicles for the transportation sector the penetration has reached the 10 percent level in multiple geographies that's the point where you often see an inflection 00:39:19 going much higher Norway is already at 50 percent all the auto makers are going in that direction business is leading

      !- Electricity : inflection Point

  10. Feb 2022
    1. a region around a charged particle or object within which a force would be exerted on other charged particles or objects.Translate electric field toChoose languageAfrikaansAlbanianAmharicArabicArmenianAzerbaijaniBanglaBasqueBelarusianBosnianBulgarianBurmeseCatalanCebuanoChinese (Simplified)Chinese (Traditional)CorsicanCroatianCzechDanishDutchEsperantoEstonianFilipinoFinnishFrenchGalicianGeorgianGermanGreekGujaratiHaitian CreoleHausaHawaiianHebrewHindiHmongHungarianIcelandicIgboIndonesianIrishItalianJapaneseJavaneseKannadaKazakhKhmerKinyarwandaKoreanKurdishKyrgyzLaoLatinLatvianLithuanianLuxembourgishMacedonianMalagasyMalayMalayalamMalteseMāoriMarathiMongolianNepaliNorwegianNyanjaOdiaPashtoPersianPolishPortuguesePunjabiRomanianRussianSamoanScottish GaelicSerbianShonaSindhiSinhalaSlovakSlovenianSomaliSouthern SothoSpanishSundaneseSwahiliSwedishTajikTamilTatarTeluguThaiTurkishTurkmenUkrainianUrduUyghurUzbekVietnameseWelshWestern FrisianXhosaYiddishYorubaZulu

      Electric Field

    1. Gravitational potential energy is the energy stored in an object as the result of its vertical position or height. The energy is stored as the result of the gravitational attraction of the Earth for the object.

      GPE

    1. Polarization, in Physics, is defined as a phenomenon caused due to the wave nature of electromagnetic radiation. Sunlight travels through the vacuum to reach the Earth, which is an example of an electromagnetic wave. These waves are called electromagnetic waves because they form when an electric field that interacts with a magnetic field.

      Polarization

  11. Aug 2020
  12. Mar 2020
  13. Dec 2019
    1. I saw the dull yellow eye of the creature open; it breathed 098hard, and a convulsive motion agitated its limbs

      This description recalls an experiment by Giovanni Aldini, a Professor of Experimental Philosophy at the University of Bologna, Italy. He was also Luigi Galvani’s nephew and a strong proponent of the latter’s work. In early 1803, Aldini conducted an electrical experiment on the corpse of Thomas Foster at Newgate Prison in London. A voltaic pile sent electric currents through the dead man’s body, causing it to contract and contort and one eye to open. Such experiments were well known to the Shelleys, who attended physiological lectures in London between 1802 and 1816.

    1. Before this I was not unacquainted with the more obvious laws of electricity. On this occasion a man of great research in natural philosophy was with us, and, excited by this catastrophe, he entered on the explanation of a theory which he had formed on the subject of electricity and galvanism, which was at once new and astonishing to me. All that he said threw greatly into the shade Cornelius Agrippa, Albertus Magnus, and Paracelsus, the lords of my imagination; but by some fatality the overthrow of these men disinclined me to pursue my accustomed studies. It seemed to me as if nothing would or could ever be known. All that had so long engaged my attention suddenly grew despicable. By one of those caprices of the mind, which we are perhaps most subject to in early youth, I at once gave up my former occupations; set down natural history and all its progeny as a deformed and abortive creation; and entertained the greatest disdain for a would-be science, which could never even step within the threshold of real knowledge. In this mood of mind I betook myself to the mathematics, and the branches of study appertaining to that science, as being built upon secure foundations, and so worthy of my consideration. Thus strangely are our souls constructed, and by such slight ligaments are we bound to prosperity or ruin. When I look back, it seems to me as if this almost miraculous change of inclination and will was the immediate suggestion of the guardian angel of my life— the last effort made by the spirit of preservation to avert the storm that was even then hanging in the stars, and ready to envelope me. Her victory was announced by an unusual tranquillity and gladness of soul, which followed the relinquishing of my ancient and latterly tormenting studies. It was thus that I was to be taught to associate evil with their prosecution, happiness with their disregard. 29It was a strong effort of the spirit of good; but it was ineffectual. Destiny was too potent, and her immutable laws had decreed my utter and terrible destruction.

      In this section, in 1831 three paragraphs of text replace a five-paragraph section in 1818.

      Awed by the destructive power of the lightning-blast and their companions discourse on galvanism, Victor throws aside the "tormenting studies" of both medieval alchemy and natural philosophy which had hitherto fueled his sense of wonder and formed the basis of his intellectual obsessions. Turning instead to mathematics, he enjoys a brief respite from his torments, but his former desires will overtake him again.

  14. Jun 2019
    1. Control rods are usually used in control rod assemblies (typically 20 rods for a commercial PWR assembly) and inserted into guide tubes within a fuel element. A control rod is removed from or inserted into the central core of a nuclear reactor in order to increase or decrease the neutron flux, which describes the number of neutrons that split further uranium atoms. This in turn affects the thermal power, the amount of steam produced and hence the electricity generated.
  15. May 2015