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  2. HP calculators - Wikipedia

    en.wikipedia.org/wiki/HP_calculators

    A dual-powered (battery and solar cells) algebraic scientific calculator with 4-lines LCD screen and can display expressions in textbook format. HP Prime: 2013 A "smartphone competitor" with a 3 + 1 ⁄ 2-inch color touch screen, "apps", CAS and exam feature that allows both selection of RPN vs. Algebraic vs. textbook and exam format for use on ...

  3. Tree girth measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_girth_measurement

    An Excel spreadsheet can be used to determine the rate the apparent size of the scale changes with distance, and that value can be used to calculate the diameter of the tree given that the tree is circular in cross section and the distance to the front side of the tree is known. Girth then is calculated by multiplying the diameter by pi.

  4. Monty Hall problem - Wikipedia

    en.wikipedia.org/wiki/Monty_Hall_problem

    Monty Hall problem. In search of a new car, the player chooses a door, say 1. The game host then opens one of the other doors, say 3, to reveal a goat and offers to let the player switch from door 1 to door 2. The Monty Hall problem is a brain teaser, in the form of a probability puzzle, based nominally on the American television game show Let ...

  5. Red blood cell distribution width - Wikipedia

    en.wikipedia.org/wiki/Red_blood_cell...

    Red blood cell distribution width ( RDW ), as well as various types thereof ( RDW-CV or RCDW and RDW-SD ), is a measure of the range of variation of red blood cell (RBC) volume that is reported as part of a standard complete blood count. [1] Red blood cells have an average volume of 80–100 femtoliters, but individual cell volumes vary even in ...

  6. HP-35 - Wikipedia

    en.wikipedia.org/wiki/HP-35

    The HP-35 was 5.8 inches (150 mm) long and 3.2 inches (81 mm) wide, said to have been designed to fit into one of William Hewlett's shirt pockets. Was the first scientific calculator to fly in space in 1973. [5] HP-35 calculators were carried on the Skylab 3 and Skylab 4 flights, between July 1973 and February 1974. [6]

  7. From 'latte makeup' to 'girl dinners,' TikTok has launched ...

    www.aol.com/news/latte-makeup-girl-dinners...

    In April, the company announced a $626.5 million investment to expand a manufacturing facility in Iowa with at least 106 new jobs. Some topics that went viral on TikTok even spawned analog ...

  8. Orders of magnitude (length) - Wikipedia

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

    The nanometre ( SI symbol: nm) is a unit of length in the metric system equal to 10−9 metres ( ⁠ 1 1 000 000 000⁠ m = 0.000 000 001 m ). To help compare different orders of magnitude, this section lists lengths between 10 −9 and 10 −8 m (1 nm and 10 nm). 1 nm – diameter of a carbon nanotube.

  9. Numeric precision in Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Numeric_precision_in...

    With some exceptions regarding erroneous values, infinities, and denormalized numbers, Excel calculates in double-precision floating-point format from the IEEE 754 specification [1] (besides numbers, Excel uses a few other data types [2] ). Although Excel allows display of up to 30 decimal places, its precision for any specific number is no ...