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  2. Minute and second of arc - Wikipedia

    en.wikipedia.org/wiki/Minute_and_second_of_arc

    [9] [failed verification] Each degree was subdivided into 60 minutes and each minute into 60 seconds. [10] [11] Thus, one Babylonian degree was equal to four minutes in modern terminology, one Babylonian minute to four modern seconds, and one Babylonian second to ⁠ 1 / 15 ⁠ (approximately 0.067) of a modern second.

  3. Visual acuity - Wikipedia

    en.wikipedia.org/wiki/Visual_acuity

    For 6/6 = 1.0 acuity, the size of a letter on the Snellen chart or Landolt C chart is a visual angle of 5 arc minutes (1 arc min = 1/60 of a degree), which is a 43 point font at 20 feet. [10] By the design of a typical optotype (like a Snellen E or a Landolt C), the critical gap that needs to be resolved is 1/5 this value, i.e., 1 arc min.

  4. Speaking clock - Wikipedia

    en.wikipedia.org/wiki/Speaking_clock

    A recorded female voice says: "Es wird mit dem Summerton 15 Uhr, 53 Minuten und 10 Sekunden", meaning "At the buzzing tone, the time will be 15 hours, 53 minutes and 10 seconds", followed by a short pause and a 1 kHz, 0.25 seconds long beep (even though the announcement "buzzing tone" suggests otherwise).

  5. Millisecond - Wikipedia

    en.wikipedia.org/wiki/Millisecond

    A millisecond is to one second, as one second is to approximately 16.67 minutes. ... this page lists times between 10 −3 seconds and 10 0 seconds ...

  6. Quartz clock - Wikipedia

    en.wikipedia.org/wiki/Quartz_clock

    [55] [56] The Astron had a quartz oscillator with a frequency of 8,192 Hz and was accurate to 0.2 seconds per day, 5 seconds per month, or 1 minute per year. The Astron was released less than a year prior to the introduction of the Swiss Beta 21, which was developed by 16 Swiss Watch manufacturers and used by Rolex, Patek and Omega in their ...

  7. Time price - Wikipedia

    en.wikipedia.org/wiki/Time_price

    The time price in 1938 to purchase an ounce of Hershey's chocolate for a minimum wage worker would have been about 8 minutes (⁠ 0.033 / 0.25 ⁠ = 7.92 minutes (0.132 hours)) and the time price in 2009 would have been about 4 minutes (⁠ 0.50 / 7.25 ⁠ = 4.14 minutes (0.069 hours)). In other words, even though the cost of Hershey's ...

  8. Explorer 18 - Wikipedia

    en.wikipedia.org/wiki/Explorer_18

    These omnidirectional counts were due to protons above 50 MeV plus electrons above 4 MeV. The parallel, perpendicular, and omnidirectional count rates were obtained for one 40-seconds accumulation interval during successive normal 81.9-seconds telemetry sequences. Thus, any one count rate was measured for 40 seconds once each 5.46 minutes.

  9. AN/MPQ-4 - Wikipedia

    en.wikipedia.org/wiki/AN/MPQ-4

    They then waited for the round to appear in the upper beam, causing another blip to appear. This time they used a second set of wheels to move the strobes to the new location. The entire process takes as little as 20 seconds. [11] [2] The handwheels were connected to an analog computer that continually output the calculated coordinates of the ...