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2. Display size - Wikipedia

   en.wikipedia.org/wiki/Display_size

   The size of a screen is usually described by the length of its diagonal, which is the distance between opposite corners, typically measured in inches. It is also sometimes called the physical image size to distinguish it from the "logical image size," which describes a screen's display resolution and is measured in pixels. [1] [2]

3. Optimum HDTV viewing distance - Wikipedia

   en.wikipedia.org/wiki/Optimum_HDTV_viewing_distance

   The "optimal viewing distance" [5] is based on the limits of the human eye, i.e. its angle of resolution. This is its ability to distinguish between two pixels. For normal visual acuity (6/6 vision), this angle is 1 arcmin. To obtain a fixed distance for a given resolution, it must be expressed in picture heights (H). [5]

4. Satellite television - Wikipedia

   en.wikipedia.org/wiki/Satellite_television

   Early satellite television systems were not very popular due to their expense and large dish size. [68] The satellite television dishes of the systems in the late 1970s and early 1980s were 10 to 16 feet (3.0 to 4.9 m) in diameter, [69] made of fibreglass or solid aluminum or steel, [70] and in the United States cost more than $5,000, sometimes ...

5. Square mile - Wikipedia

   en.wikipedia.org/wiki/Square_mile

   Square miles should not be confused with miles square, a square region with each side having a length of the value given. For example, a region which is 20 miles square (20 miles × 20 miles) has an area of 400 sq mi; a rectangle of measuring 10 miles × 40 miles also has an area of 400 sq mi, but is not 20 miles square.

6. 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!

7. 10-foot user interface - Wikipedia

   en.wikipedia.org/wiki/10-foot_user_interface

   In fact, a 1920 x 1080 pixel resolution UI has a size in space that varies with the size of the TV set. This is why, in television, distance is expressed in picture heights (H) and not in metres (or feet). [8] Furthermore, this 10-foot distance does not correspond to the optimal viewing distance or the Lechner distance (3.2 H for 1080 HD ...

8. Unit of length - Wikipedia

   en.wikipedia.org/wiki/Unit_of_length

   Astronomical measure uses: Earth radius R 🜨 ≈ 6,371 km [9] Lunar distance LD ≈ 384 402 km. [10] Average distance between the center of Earth and the center of the Moon. astronomical unit au. Defined as 149 597 870 700 m. [11] Approximately the distance between the Earth and Sun. light-year ly ≈ 9 460 730 472 580.8 km.

9. Chain (unit) - Wikipedia

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

   The chain is the unit of linear measurement for the survey of the public lands as prescribed by law. All returns of measurement in the rectangular system are made in the true horizontal distance in links, chains, and miles. The only exceptions to this rule are special requirements for measurement in feet in mineral surveys and townsite surveys ...