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  1. Jan 2024
  2. www.a5-size.com www.a5-size.com
    History ISO 216 standard. A, B and C paper sizes.
    1
    1. chrisaldrich 05 Jan 2024
      The first time the ratio of length to width was written in a letter dated 25 October 1786. This letter was from the German Georg Christoph Lichtenberg to Johann Beckmann. He wrote here about the advantages of basing paper on a √2 ratio. Lichtenberg is known for the ratio between length and width of a surface which remains the same after the narrated halving of the surface. The result is 1:√2.

      Sourcing? Look this up.<br /> https://www.a5-size.com/history/

      Georg Christoph Lichtenberg DIN 476 Johann Beckmann 1:√2 ratios paper standards ISO 216 Lazare Carnot Walter Porstmann
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  3. Jul 2021
  4. assets.publishing.service.gov.uk assets.publishing.service.gov.uk
    SARS-CoV-2 variants of concern and variants under investigation
    1
    1. Lu17Cheryl 05 Jul 2021

      (2021). Retrieved 5 July 2021, from https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/991343/Variants_of_Concern_VOC_Technical_Briefing_14.pdf

      is:PDF lang:en COVID-19 Coronavirus SARS-CoV-2 variant UK Delta variant vaccine effectiveness case fatality ratios death transmissibility hospitalization health
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    assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/991343/Variants_of_Concern_VOC_Technical_Briefing_14.pdf
  5. Feb 2021
  6. www.newstatesman.com www.newstatesman.com
    The eight biggest Covid-sceptic myths – and why they’re wrong
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    1. Lu17Cheryl 24 Feb 2021

      “The Eight Biggest Covid-Sceptic Myths – and Why They’re Wrong.” Accessed February 24, 2021. https://www.newstatesman.com/science-tech/coronavirus/2021/01/eight-biggest-covid-sceptic-myths-and-why-they-re-wrong.

      is:webpage lang:en COVID-19 Coronavirus pandemic lockdown misinformation myths social distancing vaccination infection fatality rate case fatality ratios UK USA death suicide self-harm isolation academia social media
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    newstatesman.com/science-tech/coronavirus/2021/01/eight-biggest-covid-sceptic-myths-and-why-they-re-wrong