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  2. Snellen chart - Wikipedia

    en.wikipedia.org/wiki/Snellen_chart

    At exactly 6 metres' distance from the patient, the letters on the 6/6 line shall subtend 5 minutes of arc (such that the individual limbs of the letters subtend 1 minute of arc), which means that the chart should be sized such that these letters are 8.73 mm tall and the topmost (6/60) "E" should be 87.3 mm tall.

  3. Tree height measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_height_measurement

    It was 7 feet [2.1 m] through 10 feet [3.0 m] from the stump, and 5 feet [1.5 m] through 50 feet [15 m] from the stump. Twenty-two logs were taken from the tree, the average length of which were 12 feet [3.7 m]. Fourteen feet [4.3 m] of the tree were spoiled in falling.

  4. Orders of magnitude (length) - Wikipedia

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

    1.75 m – (5 feet 8 inches) – height of average U.S. male human as of 2002 (source: U.S. CDC as per female above) 2.4 m – wingspan of a mute swan; 2.5 mheight of a sunflower; 2.7 m – length of a leatherback sea turtle, the largest living turtle; 2.72 m – (8 feet 11 inches) – tallest-known human (Robert Wadlow) [31]

  5. League (unit) - Wikipedia

    en.wikipedia.org/wiki/League_(unit)

    From 1630 to 1718 a millia was 5,564 feet (1,696 metres), making a geographical league of four millias equal 22,256 feet (6,784 m or 3.663 modern nautical miles). But from 1718 through the 1830s the millia was defined as the equivalent of just over 5,210 feet, giving a shorter geographical league of just over 20,842 feet (6,353 m or 3.430 ...

  6. Height - Wikipedia

    en.wikipedia.org/wiki/Height

    Height is measure of vertical distance, either vertical extent (how "tall" something or someone is) or vertical position (how "high" a point is). For an example of vertical extent, "This basketball player is 7 foot 1 inches in height." For an example of vertical position, "The height of an airplane in-flight is about 10,000 meters."

  7. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Perceived visual angle - Wikipedia

    en.wikipedia.org/wiki/Perceived_visual_angle

    Suppose one is looking through a window at a 30-foot-wide (9.1 m) house 240 feet away, so it subtends a visual angle of about 7 degrees. The 30-inch-wide (760 mm) window opening is 10 feet away, so it subtends a visual angle of 14 degrees.

  9. Trainers Say This Beginner-Friendly Gym Machine Will Help You ...

    www.aol.com/trainers-beginner-friendly-gym...

    For each exercise, perform three sets of 12 reps, resting for 45 seconds between each set. Trainer note: When using a Smith machine, your form may look a tiny bit different than the moves ...