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  2. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    This is a list of radioactive nuclides (sometimes also called isotopes), ordered by half-life from shortest to longest, in seconds, minutes, hours, days and years. Current methods make it difficult to measure half-lives between approximately 10 −19 and 10 −10 seconds.

  3. Solar irradiance - Wikipedia

    en.wikipedia.org/wiki/Solar_irradiance

    In fact, under clear skies a solar panel placed horizontally at the north or south pole at midsummer receives more sunlight over 24 hours (cosine of angle of incidence equal to sin(23.5°) or about 0.40) than a horizontal panel at the equator at the equinox (average cosine equal to 1/ π or about 0.32).

  4. 24-hour clock - Wikipedia

    en.wikipedia.org/wiki/24-hour_clock

    24-hour digital clock in Miaoli HSR station. A public 24-hour clock in Curitiba, Brazil, with the hour hand on the outside and the minute hand on the inside.. A time of day is written in the 24-hour notation in the form hh:mm (for example 01:23) or hh:mm:ss (for example, 01:23:45), where hh (00 to 23) is the number of full hours that have passed since midnight, mm (00 to 59) is the number of ...

  5. How a fateful 33 hours marked a critical turning point for ...

    www.aol.com/fateful-33-hours-marked-critical...

    The school bus in which six children died when they were marooned in a Colorado blizzard on March 31, 1931. (Getty Images) It was an unusually warm March morning for those parts of rural Colorado ...

  6. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    In statistics, the 68–95–99.7 rule, also known as the empirical rule, and sometimes abbreviated 3sr, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: approximately 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively.

  7. Book bans jumped by 33 percent last year: report - AOL

    www.aol.com/book-bans-jumped-33-percent...

    Story at a glance There were 3,362 book ban attempts in K-12 schools across the country last school year — 33 percent more than the year before, according to a new report from free expression ...

  8. Nychthemeron - Wikipedia

    en.wikipedia.org/wiki/Nychthemeron

    Some languages have a word for 24 hours, or more loosely a day plus a night in no particular order. Unlike a calendar date, only the length is defined, with no particular start or end. Furthermore, these words are considered basic and native to these languages, so unlike nychthemeron they are not associated with jargon .

  9. Today’s NYT ‘Strands’ Hints, Spangram and Answers for ...

    www.aol.com/today-nyt-strands-hints-spangram...

    24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. Mail. ... this is the latest addicting game to cross off your to-do list before a new one pops up 24 hours later.