Search results
Results From The WOW.Com Content Network
Design. A Molotov cocktail is a glass bottle containing a flammable substance such as petrol (gasoline), alcohol or a napalm -like mixture and a source of ignition, such as a burning cloth wick, held in place by the bottle's stopper. The wick is usually soaked in alcohol or kerosene rather than petrol.
A glass building facade. Glass is an amorphous ( non-crystalline) solid. Because it is often transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics. Some common objects made of glass like "a glass" of water, "glasses", and "magnifying glass", are named ...
More formally, the Klein bottle is a two-dimensional manifold on which one cannot define a normal vector at each point that varies continuously over the whole manifold. Other related non-orientable surfaces include the Möbius strip and the real projective plane. While a Möbius strip is a surface with a boundary, a Klein bottle has no boundary.
Beer bottles of different colors. Glass coloring and color marking may be obtained in several ways. by the addition of coloring ions, [1] [2] by precipitation of nanometer-sized colloids (so-called striking glasses [1] such as "gold ruby" [3] or red "selenium ruby"), [2] Ancient Roman enamelled glass, 1st century, Begram Hoard.
Leyden jar. A Leyden jar (or Leiden jar, or archaically, Kleistian jar) is an electrical component that stores a high-voltage electric charge (from an external source) between electrical conductors on the inside and outside of a glass jar. It typically consists of a glass jar with metal foil cemented to the inside and the outside surfaces, and ...
John H. Hobbs, Charles W. Brockunier, William Leighton Sr. Products. Flint and fancy-colored glassware. Revenue. $325,000 (1873) Number of employees. 350 (1877) J. H. Hobbs, Brockunier and Company was one of the largest and best-known manufacturers of glass in the United States during the 19th century. Its products were distributed worldwide.
Sugar glass is made by dissolving sugar in water and heating it to at least the "hard crack" stage (approx. 150 °C / 300 °F) in the candy making process. Glucose or corn syrup is used to prevent the sugar from recrystallizing and becoming opaque, by disrupting the orderly arrangement of the molecules. Cream of tartar is also used for this ...
When it comes to getting a good night’s sleep, the standard advice is to wind down and shut off screens an hour before your bedtime. And while sleep experts still recommend this, new research ...