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#electrical — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #electrical, aggregated by home.social.

  1. theguardian.com/commentisfree/; assets.publishing.service.gov.. "Oil & #gas are not straightforwardly interchangeable with #electrical power. #Electricity does not yet fuel large commercial airliners, nor does it propel #petrol #cars or power #gas boilers. Accordingly, the answer is to Electrify Everything... Reliance on #market mechanisms & #private providers to encourage millions of #households to transition to #electric cars or heat pumps means we are nowhere near being able to electrify everything."

  2. theguardian.com/commentisfree/; assets.publishing.service.gov.. "Oil & #gas are not straightforwardly interchangeable with #electrical power. #Electricity does not yet fuel large commercial airliners, nor does it propel #petrol #cars or power #gas boilers. Accordingly, the answer is to Electrify Everything... Reliance on #market mechanisms & #private providers to encourage millions of #households to transition to #electric cars or heat pumps means we are nowhere near being able to electrify everything."

  3. theguardian.com/commentisfree/; assets.publishing.service.gov.. "Oil & #gas are not straightforwardly interchangeable with #electrical power. #Electricity does not yet fuel large commercial airliners, nor does it propel #petrol #cars or power #gas boilers. Accordingly, the answer is to Electrify Everything... Reliance on #market mechanisms & #private providers to encourage millions of #households to transition to #electric cars or heat pumps means we are nowhere near being able to electrify everything."

  4. theguardian.com/commentisfree/; assets.publishing.service.gov.. "Oil & #gas are not straightforwardly interchangeable with #electrical power. #Electricity does not yet fuel large commercial airliners, nor does it propel #petrol #cars or power #gas boilers. Accordingly, the answer is to Electrify Everything... Reliance on #market mechanisms & #private providers to encourage millions of #households to transition to #electric cars or heat pumps means we are nowhere near being able to electrify everything."

  5. theguardian.com/commentisfree/; assets.publishing.service.gov.. "Oil & #gas are not straightforwardly interchangeable with #electrical power. #Electricity does not yet fuel large commercial airliners, nor does it propel #petrol #cars or power #gas boilers. Accordingly, the answer is to Electrify Everything... Reliance on #market mechanisms & #private providers to encourage millions of #households to transition to #electric cars or heat pumps means we are nowhere near being able to electrify everything."

  6. Of interest to #Canadians. With the Fedi skew to tech-knowledgeable people, this probably isn't news to many.

    But if you're looking to buy #electrical stuff - power bars, extension cords, multi-outlet wall taps that convert 1 #socket into 3 or 2 into 6, all this sort of stuff - be careful where you buy it.

    The big hardware stores / home centres sell this stuff, but at stupidly-high #prices. There's no reason a 10-foot extension cord should cost $25, or a power bar $40. So many people reasonably look for #cheaper alternatives.

    A lot of #stores and sellers operating in the ... less-well-regulated portions of the market bring this stuff in cheap directly from sellers/manufacturers in China or other countries. Independent stores, mall kiosks, people selling out of their home - their products may not be approved for sale in Canada, because they don't have the necessary #safety #certification. And many of *those* products are actually downright dangerous. I've taken a lot of them apart and seen the many, many ways they can kill you or burn your house down.

    Instead, get this stuff at #Dollarama. Their stuff is actually safety-certified by one of the required labs - #CSA, #UL, or most likely #ETL. It's approved for sale in #Canada. And it's still cheap. It might be a little more than guy-with-a-sales-counter-in-a-dilapidated-strip-mall, but not by enough to matter.

    Other big chains might be okay - but I haven't personally verified those.

    #PowerBar #ExtensionCord

  7. #SolarPunkSunday musings...

    So, in contemplating my own vision of a #SolarPunk community, there are some *jobs* that imho are crucial to running any type of close-knit community /society...

    1. People trained in #FirstAid / #MedicalArts -- for both humans and non-humans
    2. #Plumbers
    3. #Carpenters
    4. #Masons
    5. #Blacksmiths / #Metalworkers
    6. #Architects / #Planners
    7. #Foresters / #Foragers
    8. #Gardeners / #Farmers / #FoodProducers
    9. #Menders / #Cobblers / #Clothiers / #Seamsters / #Tailors
    10. #Chemists / #Alchemists
    11. #Herbalists / #Compounders
    12. #CitizenScientists / #Observers
    13. #Potters / #Ceramics experts
    14. #Computer / #Technology fixers (especially #electrical and #solar)
    15. #Mothers / #Caregivers
    16. #Teachers / #Librarians
    17. #Cooks
    18. #Cleaners
    19. #Weavers / #Spinners / #FiberArtists

    Other suggestions?

  8. #SpaceWeather effects affect our technological systems. The currents a #geomagnetic storm induces in power lines can destroy transformers. For long-distance power lines aligned parallel to the geoelectric fields, the induced voltage can be thousands of volts. Many of today’s #electrical systems are built around #computer chips that are not robust to high-voltage surges. The hardest-hit regions could be without #power for days or weeks until equipment could be delivered spectrum.ieee.org/us-regions-m

  9. Fires in flats almost weekly: who investigates?🤔

    #Fire breaks out in Redhill flat: 4 people taken to hospital, 50 #residents #evacuated
    " #Singapore Civil Defence Force said it responded to a fire at 68 Redhill Close at 1.15am. When firefighters arrived at te scene, te living rm of te 4th-floor #HDB unit was in flames.. 50 people fr te affected block were also evacuated.. Preliminary find'gs show tt te cause of te fire is likely fr an #electrical #origin in te living rm"
    straitstimes.com/singapore/fou

  10. 8-channel high-speed #OpenSource #electrical #impedance #tomography device implemented on a programmable #system-on-a-chip:

    #EIT is a non-invasive #imaging technique providing info about the internal #conductivity distribution of a body/object

    doi.org/10.1016/j.ohx.2025.e00
    #DIYbio #lab #instruments #SoC

  11. The nonsense I stumble across on job sites. Check out this OSHA compliant extension cord repair! #OSHA #electrical #bodge

  12. Here is proof! On my 60th Birthday trip, she went from 99K to 100 and has many more miles to roll. Blaze has been so happy since we found (at around 60K) the source of the battery drain. Just normal wear & maintenance; most recently replacing front suspension.
    #Blaze #mustang #V6 #ragtop #red #convertible #tan #roof #fifth #generation #ford #redesign #electrical #problems #battery #good #now #issue was #not the #alternator #thx #four #alternators #later #BlazeStarr

  13. Here is proof! On my 60th Birthday trip, she went from 99K to 100 and has many more miles to roll. Blaze has been so happy since we found (at around 60K) the source of the battery drain. Just normal wear & maintenance; most recently replacing front suspension.
    #Blaze #mustang #V6 #ragtop #red #convertible #tan #roof #fifth #generation #ford #redesign #electrical #problems #battery #good #now #issue was #not the #alternator #thx #four #alternators #later #BlazeStarr

  14. Here is proof! On my 60th Birthday trip, she went from 99K to 100 and has many more miles to roll. Blaze has been so happy since we found (at around 60K) the source of the battery drain. Just normal wear & maintenance; most recently replacing front suspension.
    #Blaze #mustang #V6 #ragtop #red #convertible #tan #roof #fifth #generation #ford #redesign #electrical #problems #battery #good #now #issue was #not the #alternator #thx #four #alternators #later #BlazeStarr

  15. Planetary electromagnetic pollution: it is time to assess its impact

    by Priyanka Bandara and David O Carpenter

    Published December, 2018

    "As the #PlanetaryHealthAlliance moves forward after a productive second annual meeting, a discussion on the rapid global proliferation of artificial #electromagnetic fields would now be apt. The most notable is the blanket of radiofrequency electromagnetic radiation, largely microwave radiation generated for wireless communication and surveillance technologies, as mounting scientific evidence suggests that prolonged exposure to radiofrequency electromagnetic radiation has serious biological and health effects. However, public exposure regulations in most countries continue to be based on the guidelines of the International Commission on Non-Ionizing Radiation Protection and Institute of Electrical and Electronics Engineers, which were established in the 1990s on the belief that only acute thermal effects are hazardous.

    "Prevention of tissue heating by radiofrequency electromagnetic radiation is now proven to be ineffective in preventing biochemical and physiological interference. For example, acute non-thermal exposure has been shown to alter human brain metabolism by NIH scientists, electrical activity in the #brain, and systemic immune responses.
    Chronic exposure has been associated with increased oxidative stress and #DNADamage, and cancer risk.

    "Laboratory studies, including large rodent studies by the US National Toxicology Program and Ramazzini Institute of Italy, confirm these biological and health effects in vivo. As we address the threats to human health from the changing environmental conditions due to human activity, the increasing exposure to artificial electromagnetic radiation needs to be included in this discussion.

    "Due to the exponential increase in the use of wireless personal communication devices (eg, mobile or cordless phones and WiFi or Bluetooth-enabled devices) and the infrastructure facilitating them, levels of exposure to radiofrequency electromagnetic radiation around the 1 GHz frequency band, which is mostly used for modern wireless communications, have increased from extremely low natural levels by about 1018 times. Radiofrequency electromagnetic radiation is also used for #radar, security scanners, #SmartMeters, and medical equipment (#MRI, diathermy, and #radiofrequency ablation). It is plausibly the most rapidly increasing #anthropogenic #environmental exposure since the mid-20th century, and levels will surge considerably again, as technologies like the Internet of Things and 5G add millions more radiofrequency transmitters around us.

    "Unprecedented human exposure to radiofrequency electromagnetic radiation from conception until death has been occurring in the past two decades. Evidence of its effects on the #CNS, including altered #neurodevelopment and increased risk of some #neurodegenerative diseases, is a major concern considering the steady increase in their incidence. Evidence exists for an association between neurodevelopmental or behavioural disorders in children and exposure to wireless devices, and experimental evidence, such as the Yale finding, shows that prenatal exposure could cause structural and functional changes in the brain associated with #ADHD-like behaviour. These findings deserve urgent attention.

    "At the Oceania Radiofrequency Scientific Advisory Association, an independent scientific organisation, volunteering scientists have constructed the world's largest categorised online database of peer-reviewed studies on radiofrequency electromagnetic radiation and other man-made electromagnetic fields of lower frequencies. A recent evaluation of 2266 studies (including in-vitro and in-vivo studies in human, animal, and plant experimental systems and population studies) found that most studies (n=1546, 68·2%) have demonstrated significant biological or health effects associated with exposure to anthropogenic electromagnetic fields. We have published our preliminary data on radiofrequency electromagnetic radiation, which shows that 89% (216 of 242) of experimental studies that investigated oxidative stress endpoints showed significant effects.

    This weight of scientific evidence refutes the prominent claim that the deployment of wireless technologies poses no health risks at the currently permitted non-thermal radiofrequency exposure levels. Instead, the evidence supports the International EMF Scientist Appeal by 244 scientists from 41 countries who have published on the subject in peer-reviewed literature and collectively petitioned the WHO and the UN for immediate measures to reduce public exposure to artificial electromagnetic fields and radiation.

    "Evidence also exists of the effects of radiofrequency electromagnetic radiation on #flora and #fauna. For example, the reported global reduction in #bees and other insects is plausibly linked to the increased radiofrequency electromagnetic radiation in the environment. #Honeybees are among the species that use magnetoreception, which is sensitive to anthropogenic electromagnetic fields, for navigation.

    "Man-made electromagnetic fields range from extremely low frequency (associated with electricity supplies and #electrical appliances) to low, medium, high, and extremely high frequency (mostly associated with wireless communication). The potential effects of these anthropogenic electromagnetic fields on natural electromagnetic fields, such as the Schumann Resonance that controls the weather and climate, have not been properly studied. Similarly, we do not adequately understand the effects of anthropogenic radiofrequency electromagnetic radiation on other natural and man-made atmospheric components or the ionosphere. It has been widely claimed that radiofrequency electromagnetic radiation, being non-ionising radiation, does not possess enough photon energy to cause DNA damage. This has now been proven wrong experimentally.

    "#RadiofrequencyElectromagneticRadiation causes DNA damage apparently through oxidative stress, similar to near-UV radiation, which was also long thought to be harmless.

    "At a time when environmental health scientists tackle serious global issues such as #ClimateChange and chemical #toxicants in public health, there is an urgent need to address so-called #electrosmog. A genuine evidence-based approach to the risk assessment and regulation of anthropogenic electromagnetic fields will help the health of us all, as well as that of our planetary home. Some government health authorities have recently taken steps to reduce public exposure to radiofrequency electromagnetic radiation by regulating use of wireless devices by children and recommending preferential use of wired communication devices in general, but this ought to be a coordinated international effort.
    We declare no competing interests. We thank Alasdair Philips for assistance with the figure and Victor Leach and Steve Weller for assistance with the ORSAA Database, which has enabled our overview of the scientific evidence in this area of research."

    thelancet.com/journals/lanplh/

    #5G #ElectromagneticPollution
    #Hum #OmaghHum

  16. I love electric motors!
    This is an old 1/4 HP induction motor made by the Thompson-Houston Co Ltd. (Rugby, England) It runs at 1425 rpm @ 50Hz and will, one day drive a small pre-war metal lathe

    #Electrical
    #ElectricMotors
    #ElectricMotorPorn #OrnamentsForEngineers

  17. Well done to those people selecting <The cavity magnetron> option.

    Whilst the use of #magnetic fields as a means to control the flow of an #electrical current was know earlier, the #cavity #magnetron was introduced by John Randall and Harry Boot at the University of #Birmingham in 1941.

    It was initially used in #RADAR giving the allies a significant lead in #WorldWar2.

    It subsequently found another use in #microwave ovens of which over 1bn are in use today.

    See:

    en.wikipedia.org/wiki/Cavity_m

  18. Well done to those people selecting <The cavity magnetron> option.

    Whilst the use of #magnetic fields as a means to control the flow of an #electrical current was know earlier, the #cavity #magnetron was introduced by John Randall and Harry Boot at the University of #Birmingham in 1941.

    It was initially used in #RADAR giving the allies a significant lead in #WorldWar2.

    It subsequently found another use in #microwave ovens of which over 1bn are in use today.

    See:

    en.wikipedia.org/wiki/Cavity_m

  19. Well done to those people selecting <The cavity magnetron> option.

    Whilst the use of #magnetic fields as a means to control the flow of an #electrical current was know earlier, the #cavity #magnetron was introduced by John Randall and Harry Boot at the University of #Birmingham in 1941.

    It was initially used in #RADAR giving the allies a significant lead in #WorldWar2.

    It subsequently found another use in #microwave ovens of which over 1bn are in use today.

    See:

    en.wikipedia.org/wiki/Cavity_m

  20. Well done to those people selecting <The cavity magnetron> option.

    Whilst the use of #magnetic fields as a means to control the flow of an #electrical current was know earlier, the #cavity #magnetron was introduced by John Randall and Harry Boot at the University of #Birmingham in 1941.

    It was initially used in #RADAR giving the allies a significant lead in #WorldWar2.

    It subsequently found another use in #microwave ovens of which over 1bn are in use today.

    See:

    en.wikipedia.org/wiki/Cavity_m