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A quiz is a form of mind sport in which people attempt to answer questions correctly on one or several topics. Quizzes can be used as a brief assessment in education and similar fields to measure growth in knowledge, abilities, and skills, or simply as a hobby .
The main feature of the World Clock is a large twenty-four sided column (the cross-section of which is a regular icositetragon).Each side of the column represents one of the twenty-four main time zones of the Earth, and has the names of major cities which use that time zone engraved into it.
Antonie van Leeuwenhoek (1632–1723). The field of microscopy (optical microscopy) dates back to at least the 17th-century.Earlier microscopes, single lens magnifying glasses with limited magnification, date at least as far back as the wide spread use of lenses in eyeglasses in the 13th century [2] but more advanced compound microscopes first appeared in Europe around 1620 [3] [4] The ...
A microscope slide (top) and a cover slip (bottom) A microscope slide is a thin flat piece of glass, typically 75 by 26 mm (3 by 1 inches) and about 1 mm thick, used to hold objects for examination under a microscope. Typically the object is mounted (secured) on the slide, and then both are inserted together in the microscope for viewing. This ...
The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century.
The company of Carl Zeiss exploited this discovery and becomes the dominant microscope manufacturer of its era. 1928: Edward Hutchinson Synge publishes theory underlying the near-field scanning optical microscope; 1931: Max Knoll and Ernst Ruska start to build the first electron microscope. It is a transmission electron microscope (TEM).
Quiz World. It supports full game launching for PlayStation Home as well. In late-March 2010, Sony and Relentless released a patch for Buzz!: Quiz World that added a feature to allow players to post to Facebook from within the game. According to the companies involved, [5] this made the game the first in the world to offer such functionality ...
The front of Jens Olsen's World Clock The back of Jens Olsen's World Clock. Jens Olsen's World Clock or Verdensur is an advanced astronomical clock which is displayed in Copenhagen City Hall. [1] [2] The clock consists of 12 movements which together have 15,448 parts. [3] [4] The clock is mechanical and must be wound once a week. [5]