contact duplicating
51DNA profiling — Not to be confused with Full genome sequencing. Forensic science …
52Typewriter — Mechanical desktop typewriters, such as this Underwood Five, were long time standards of government agencies, newsrooms, and offices …
53Single bullet theory — The Single Bullet Theory (or Magic Bullet Theory, as it is commonly called by its critics) was introduced by the Warren Commission to explain how three shots made by Lee Harvey Oswald resulted in the assassination of United States President John… …
54Thunderbirds (film) — Infobox Film name = Thunderbirds caption = Theatrical release poster director = Jonathan Frakes producer = Eric Fellner Tim Bevan writer = Gerry Anderson Sylvia Anderson (TV show) Peter Hewitt Michael McCullers starring = Brady Corbet Bill Paxton …
55Northern Pacific Railway — The Northern Pacific Railway system map …
56Pappus of Alexandria — (Greek polytonic|Πάππος ὁ Ἀλεξανδρεύς) (c. 290 ndash; c. 350) was one of the last great Greek mathematicians of antiquity, known for his Synagoge or Collection (c. 340), and for Pappus s Theorem in projective geometry. Nothing is known of his… …
57Numerical control — CNC redirects here. For other uses, see CNC (disambiguation). A CNC Turning Center …
58International Biology Olympiad — The International Biology Olympiad (IBO) is a science olympiad for high school pupils. The first academic international Olympiads after the (originally Eastern European based) International Mathematical Olympiad were launched under the auspices… …
59Music On A Long Thin Wire — is a musical piece by Alvin Lucier conceived in 1977. In his own words (1992): Music on a Long Thin Wire is constructed as follows: the wire is extended across a large room, clamped to tables at both ends. The ends of the wire are connected to… …
60Vaporizer — thumb|right|350px|Vaporization pipe with flame filter 28. Tobacco, cannabis, other herbs or essential oils 36. Flame filter made of a stack of metal screens (5+) or a heat resistant porous materialA vaporizer (or vaporiser) is a device used to… …
