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  2. Orders of magnitude (length) - Wikipedia

    en.wikipedia.org/wiki/Orders_of_magnitude_(length)

    1.5 mm – average length of a flea [27] 2.54 mm – distance between pins on old dual in-line package (DIP) electronic components; 5 mmlength of an average red ant; 5 mm – diameter of an average grain of rice; 5.56×45mm NATO – standard ammunition size; 6 mm – approximate width of a pencil

  3. YouTube in education - Wikipedia

    en.wikipedia.org/wiki/YouTube_in_education

    In an anatomy course incorporating YouTube, 98% of students watched the assigned videos and 92% stated that they were helpful in teaching anatomical concepts. [12] A 2013 study focused on clinical skills education from YouTube found that the 100 most accessible videos across a variety of topics ( venipuncture , wound care, pain assessment, CPR ...

  4. Khan Academy - Wikipedia

    en.wikipedia.org/wiki/Khan_Academy

    After a while, Khan's other cousins began to use his tutoring service. Due to the demand, Khan decided to make his videos watchable on the Internet, so he published his content on YouTube. [9] Later, he used a drawing application called SmoothDraw, and now uses a Wacom tablet to draw using ArtRage. The video tutorials were recorded on his ...

  5. Millimetre - Wikipedia

    en.wikipedia.org/wiki/Millimetre

    Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.

  6. Sal Khan - Wikipedia

    en.wikipedia.org/wiki/Sal_Khan

    The popularity of his educational videos on the video-sharing website prompted Khan to quit his job as a financial analyst in late 2009. [24] He moved his focus to developing his YouTube channel, Khan Academy, full-time with the aid of close friend Josh Gefner. [20] Khan subsequently received sponsorship from Ann Doerr, the wife of John Doerr. [25]

  7. Unit of length - Wikipedia

    en.wikipedia.org/wiki/Unit_of_length

    The basic unit of length in the imperial and U.S. customary systems is the yard, defined as exactly 0.9144 m by international treaty in 1959. [2] [10] Common imperial units and U.S. customary units of length include: [11] thou or mil (1 ⁄ 1000 of an inch) inch (25.4 mm) foot (12 inches, 0.3048 m) yard (3 feet, 0.9144 m)

  8. 6mm BR - Wikipedia

    en.wikipedia.org/wiki/6mm_BR

    The .24 caliber (6 mm) cartridge version became known as the 6mm Bench Rest or the 6mm BR due to its widespread use in the sport of bench rest shooting. Because the cartridge was a wildcat and was not standardized until several years later, several variations of the cartridge existed.

  9. Image sensor format - Wikipedia

    en.wikipedia.org/wiki/Image_sensor_format

    Although the most common medium format film, the 120 roll, is 6 cm (2.4 in) wide, and is most commonly shot square, the most common "medium-format" digital sensor sizes are approximately 48 mm × 36 mm (1.9 in × 1.4 in), which is roughly twice the size of a full-frame DSLR sensor format.