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A condenser (right) and its respective diaphragm (left) A condenser is an optical lens that renders a divergent light beam from a point light source into a parallel or converging beam to illuminate an object to be imaged. Condensers are an essential part of any imaging device, such as microscopes, enlargers, slide projectors, and telescopes.
In the past, cities were self-governing and had several privileges. [citation needed] The list of cities is roughly ordered by population and the 2022 estimates are compared to the 2001 Ukrainian census, except for Chernobyl for which the population is an unofficial estimate. The cities with special status are shown in italic. The average ...
Diagram illustrating the light path through a dark-field microscope. The steps are illustrated in the figure where an inverted microscope is used. Light enters the microscope for illumination of the sample. A specially sized disc, the patch stop (see figure), blocks some light from the light source, leaving an outer ring of illumination. A wide ...
A bright-field microscope has many important parts including; the condenser, the objective lens, the ocular lens, the diaphragm, and the aperture. Some other pieces of the microscope that are commonly known are the arm, the head, the illuminator, the base, the stage, the adjusters, and the brightness adjuster.
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Google has updated it's aerial maps of Ukraine for the first time since the start of Russia's attack - with images now revealing the full scale of devastation. The contrast is stark in Mariupol.
There are 17 populated places in Kharkiv Oblast, Ukraine, that have been officially granted city status (Ukrainian: місто, romanized: misto) by the Verkhovna Rada, the country's parliament. [2] Settlements with more than 10,000 people are eligible for city status, although the status is typically also granted to settlements of historical ...
Chasiv Yar is located on high ground, offering Russia the possibility of a platform it can use to push towards larger cities that form Ukraine’s defensive belt in the eastern Donetsk region.