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  2. Hardness comparison - Wikipedia

    en.wikipedia.org/wiki/Hardness_comparison

    800-72-856 780: 1220: 71-850 760: 1210: 70-843 745: 1114: 68-837 725: 1060: 67-829 712: 1021: 66-824 682: 940: 65-812 668: 905: 64-806 652: 867: 63-799 626: 803: 62-787 614: 775: 61-782 601: 746: 60-776 590: 727: 59-770 576: 694: 57-763 552: 649: 56-751 545: 639: 55-748 529: 606: 54-739 514: 587: 53: 120: 731 502: 565: 52: 119: 724 495: 551: 51 ...

  3. Toll-free telephone numbers in the North American Numbering ...

    en.wikipedia.org/wiki/Toll-free_telephone...

    Toll-free telephone numbers in the North American Numbering Plan have the area code prefix 800, 833, 844, 855, 866, 877, and 888. Additionally, area codes 822, 880 through 887, and 889 are reserved for toll-free use in the future. 811 is excluded because it is a special dialing code in the group NXX for various other purposes.

  4. Transistor count - Wikipedia

    en.wikipedia.org/wiki/Transistor_count

    In terms of computer systems that consist of numerous integrated circuits, the supercomputer with the highest transistor count as of 2016 was the Chinese-designed Sunway TaihuLight, which has for all CPUs/nodes combined "about 400 trillion transistors in the processing part of the hardware" and "the DRAM includes about 12 quadrillion transistors, and that's about 97 percent of all the ...

  5. Instructions per second - Wikipedia

    en.wikipedia.org/wiki/Instructions_per_second

    Instructions per second. Instructions per second ( IPS) is a measure of a computer 's processor speed. For complex instruction set computers (CISCs), different instructions take different amounts of time, so the value measured depends on the instruction mix; even for comparing processors in the same family the IPS measurement can be problematic.

  6. 800 MHz frequency band - Wikipedia

    en.wikipedia.org/wiki/800_MHz_frequency_band

    The 800 MHz frequency band is a portion of the electromagnetic spectrum, or frequency band, that encompasses 790–862 MHz.. Being a part of the spectrum known as "UHF Bands IV and V" (i.e. 470 MHz to 862 MHz) it was allocated by the ITU to Broadcasting as the primary user in Region 1 and was used for analogue television broadcasting before changing to digital terrestrial television in many ...

  7. Nuclear weapon yield - Wikipedia

    en.wikipedia.org/wiki/Nuclear_weapon_yield

    Log–log plot comparing the yield (in kilotonnes) and mass (in kilograms) of various nuclear weapons developed by the United States.. The explosive yield of a nuclear weapon is the amount of energy released such as blast, thermal, and nuclear radiation, when that particular nuclear weapon is detonated, usually expressed as a TNT equivalent (the standardized equivalent mass of trinitrotoluene ...

  8. Multiple comparisons problem - Wikipedia

    en.wikipedia.org/wiki/Multiple_comparisons_problem

    Multiple comparisons problem. An example of coincidence produced by (uncorrected multiple comparisions) showing a correlation between the number of letters in a spelling bee's winning word and the number of people in the United States killed by venomous spiders. Given a large enough pool of variables for the same time period, it is possible to ...

  9. Display resolution - Wikipedia

    en.wikipedia.org/wiki/Display_resolution

    800: 600: 0.480: n/a: 0.76 xga: 4:3: 1024: 768: 0.786: 0.38: 2.78 wxga: 16:9: 1280: 720: 0.922: 0.36: 4.82 wxga: 16:10: 1280: 800: 1.024: 0.61: 3.08 sxga: 5:4: 1280: 1024: 1.311: 1.24: 2.47 hd: ≈16:9: 1360: 768: 1.044: 1.55: 1.38 hd: ≈16:9: 1366: 768: 1.049: 10.22: 23.26 wxga+: 16:10: 1440: 900: 1.296: 3.12: 6.98 n/a: 16:9: 1536: 864: 1.327 ...

  10. 800 (number) - Wikipedia

    en.wikipedia.org/wiki/800_(number)

    800 (eight hundred) is the natural number following 799 and preceding 801. It is the sum of four consecutive primes (193 + 197 + 199 + 211). It is a Harshad number, an Achilles number and the area of a square with diagonal 40.

  11. Conversion of scales of temperature - Wikipedia

    en.wikipedia.org/wiki/Conversion_of_scales_of...

    Comparison of temperature scales. * Normal human body temperature is 36.8 °C ±0.7 °C, or 98.2 °F ±1.3 °F. The commonly given value 98.6 °F is simply the exact conversion of the nineteenth-century German standard of 37 °C. Since it does not list an acceptable range, it could therefore be said to have excess (invalid) precision.