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  2. Paper texture effects in calotype photography - Wikipedia

    en.wikipedia.org/wiki/Paper_texture_effects_in...

    Practical photography plausibly dates from the announcement of the Daguerreotype in 1839. [1] This stimulated work by others: in 1840, the Englishman Talbot discovered what he called the calotype process for making photographic negatives on writing paper with the relatively short exposure time of a few minutes for subjects in bright sunlight. [2]

  3. 144,000 - Wikipedia

    en.wikipedia.org/wiki/144,000

    The number 144,000 appears three times in the Book of Revelation: Revelation 7:3–8: saying: "Do not harm the earth or the sea or the trees, until we have sealed the servants of God on their foreheads." And I heard the number of the sealed, 144,000, sealed from every tribe of the sons of Israel: 12,000 from the tribe of Judah were sealed,

  4. Paper chemicals - Wikipedia

    en.wikipedia.org/wiki/Paper_chemicals

    Paper Coating 1) The paper or board 2) The first layer of coating to even out the surface 3) A second layer for an even smoother and whiter surface. Pigments that absorb in the yellow and red part of the visible spectrum can be added. As the dye absorbs light, the brightness of the paper will decrease, unlike the effect of an optical ...

  5. Baktun - Wikipedia

    en.wikipedia.org/wiki/Baktun

    A baktun / ˈ b ɑː k t uː n / [1] (properly bʼakʼtun) is 20 kʼatun cycles of the ancient Maya Long Count Calendar. It contains 144,000 days, equal to 394.26 tropical years. The Classic period of Maya civilization occurred during the 8th and 9th baktuns of the current calendrical cycle.

  6. ISO 216 - Wikipedia

    en.wikipedia.org/wiki/ISO_216

    Thus, the lengths of JIS B series paper are √ 1.5 ≈ 1.22 times those of A-series paper. By comparison, the lengths of ISO B series paper are 4 √ 21.19 times those of A-series paper. Any Bn paper (according to the ISO standard) can be defined as Bn = S × L, where (measuring in metres)

  7. Faithful amplification - Wikipedia

    en.wikipedia.org/wiki/Faithful_amplification

    In electronics, faithful amplification is the amplification of a signal, particularly a weak one, by a triode or a transistor such that the signal changes in amplitude but not in shape. [ 1 ] [ 2 ] [ 3 ] In order to achieve this with a bipolar transistor , the transistor is biased .

  8. Old Faithful - Wikipedia

    en.wikipedia.org/wiki/Old_Faithful

    Name origin: Named by Henry D. Washburn September 18, 1870; 154 years ago (): Location: Upper Geyser Basin Yellowstone National Park Teton County, Wyoming, U.S.: Coordinates: 1]: Elevation: 7,349 ft (2,240 m) [2]: Type: Cone geyser: Eruption height: 106 to 185 ft (32 to 56 m): Frequency: 60 to 90 minutes: Duration: 1½ to 5 minutes: Discharge: 3,700–8,400 US gal (14,000–32,000 L): Old ...

  9. Marianne Faithfull discography - Wikipedia

    en.wikipedia.org/wiki/Marianne_Faithfull_discography

    Title Album details Peak chart positions NZ [8]US [11]The World of Marianne Faithfull (UK title) / Marianne Faithfull's Greatest Hits (US title) : Released: 1969; UK label: Decca