Context and question: The Warnerke Standard Sensitometer consisted of a frame holding an opaque screen with an array of typically 25 numbered, gradually pigmented squares brought into contact with the photographic plate during a timed test exposure under a phosphorescent tablet excited before by the light of a burning Magnesium ribbon. The speed of the emulsion was then expressed in 'degrees' Warnerke (sometimes seen as Warn. or W.) corresponding with the last number visible on the exposed plate after development and fixation. Each number represented an increase of 1/3 in speed, typical plate speeds were between 10 and 25 Warnerke at the time.
What does the last exposed number on the plate represent?
Answer: 'degrees' Warnerke
Context and question: Other, prominent Motor City R&B stars in the 1950s and early 1960s was Nolan Strong, Andre Williams and Nathaniel Mayer who all scored local and national hits on the Fortune Records label. According to Smokey Robinson, Strong was a primary influence on his voice as a teenager. The Fortune label was a family-operated label located on Third Avenue in Detroit, and was owned by the husband and wife team of Jack Brown and Devora Brown. Fortune, which also released country, gospel and rockabilly LPs and 45s, laid the groundwork for Motown, which became Detroit's most legendary record label.
What label operated in Third Avenue?
Answer: Fortune
Context and question: In 2006, a study by Behar et al., based on what was at that time high-resolution analysis of haplogroup K (mtDNA), suggested that about 40% of the current Ashkenazi population is descended matrilineally from just four women, or "founder lineages", that were "likely from a Hebrew/Levantine mtDNA pool" originating in the Middle East in the 1st and 2nd centuries CE. Additionally, Behar et al. suggested that the rest of Ashkenazi mtDNA is originated from ~150 women, and that most of those were also likely of Middle Eastern origin. In reference specifically to Haplogroup K, they suggested that although it is common throughout western Eurasia, "the observed global pattern of distribution renders very unlikely the possibility that the four aforementioned founder lineages entered the Ashkenazi mtDNA pool via gene flow from a European host population".
The women that a large percentage of the current Ashkenazi population is descended from are also known as what?
Answer:
founder lineages