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Prince Rupert's drop. Prince Rupert's drops (also known as Dutch tears or Batavian tears) [ 1][ 2] are toughened glass beads created by dripping molten glass into cold water, which causes it to solidify into a tadpole -shaped droplet with a long, thin tail. These droplets are characterized internally by very high residual stresses, which give ...
The Mississippi River[b]is the primary riverand second-longest riverof the largest drainage basin in the United States. [c][15][16]From its traditional source of Lake Itascain northern Minnesota, it flows generally south for 2,340 miles (3,766 km)[16]to the Mississippi River Deltain the Gulf of Mexico.
Decoupage or découpage ( / ˌdeɪkuːˈpɑːʒ /; [ 1] French: [dekupaʒ]) is the art of decorating an object by gluing colored paper cutouts onto it in combination with special paint effects, gold leaf, and other decorative elements. Commonly, an object like a small box or an item of furniture is covered by cutouts from magazines or from ...
The history of glass-making dates back to at least 3,600 years ago in Mesopotamia. However, most writers claim that they may have been producing copies of glass objects from Egypt. [ 1] Other archaeological evidence suggests that the first true glass was made in coastal north Syria, Mesopotamia or Egypt. [ 2]
Archeological evidence indicates that window glass was made using the cylinder method. Various types of bottles were also made. The glass works appears to have operated through 1784. Schuylkill glass works: In 1794 John Nicholson built a glass works on the west side of Philadelphia at the falls of the Schuylkill River.
Meander. A stream bed following a tilted valley. The maximum gradient is along the down-valley axis represented by a hypothetical straight coast channel. Meanders develop, which lengthen the course of the stream, decreasing the gradient. A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse.
Stiegel's glass works in the Province of Pennsylvania was the first in America to make fine lead crystal, which is often mislabeled as flint glass. [64] Amelung invested more money in glassmaking than anyone ever had and produced impressive quality glass with engraving —although his Maryland glass works failed after 11 years. [ 65 ]
In the Eulerian specification of a field, the field is represented as a function of position x and time t. For example, the flow velocity is represented by a function. On the other hand, in the Lagrangian specification, individual fluid parcels are followed through time. The fluid parcels are labelled by some (time-independent) vector field x0.