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The water-cooled condenser, which was popularized by Justus von Liebig, was invented by Weigel, Poisonnier, and Gadolin, and perfected by Göttling, all in the late 18th century. [2] Several designs that are still in common use were developed and became popular in the 19th century, when chemistry became a widely practiced scientific discipline.
Friedrich is now focused on manufacturing room air conditioners. [4] Their products include window, thru-the-wall, portable and ductless air conditioners, as well as dehumidifiers. [5] After nearly 40 years of continuous production, Friedrich replaced its long-running QuietMaster line with the professional-grade Kühl series in 2010.
The building produces water during the day and cools itself during the night; when the sun rises, the warm air is drawn through the upper holes into the building by the out-flowing cooler air, becomes cooled on the cold surface, deposits its water, which then oozes down and is collected somewhere underneath.
Waterhouse–Friderichsen syndrome (WFS) is defined as adrenal gland failure due to hemorrhages in the adrenal glands, commonly caused by sepsis.Typically, the bacteria responsible for triggering the bleeding is Neisseria meningitidis.
This chemical reaction was described in 1828 by Friedrich Wöhler. [1] It is often cited as the starting point of modern organic chemistry . Although the Wöhler reaction concerns the conversion of ammonium cyanate, this salt appears only as an (unstable) intermediate.
First patented in 1883 by the chemist Carl Friedrich Claus, the Claus process has become the industry standard. The multi-step Claus process recovers sulfur from the gaseous hydrogen sulfide found in raw natural gas and from the by-product gases containing hydrogen sulfide derived from refining crude oil and other industrial processes.
Wanderer above the Sea of Fog [a] is a painting by German Romanticist artist Caspar David Friedrich made in 1818. [2] It depicts a man standing upon a rocky precipice with his back to the viewer; he is gazing out on a landscape covered in a thick sea of fog through which other ridges, trees, and mountains pierce, which stretches out into the distance indefinitely.
In colloidal chemistry, the Krafft temperature (or Krafft point, after German chemist Friedrich Krafft) is defined as the minimum temperature at which the formation of micelles occurs in a solution of dissolved surfactant. It has been found that solubility at the Krafft point is nearly equal to critical micelle concentration (CMC). Below the ...
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