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Red lighthouse, black and white world.
The South Haven lighthouse was caked in an icy sheath on Jan. 14, 2015.
Additive manufacturing (AM) is defined by ASTM as the 'process of joining materials to make objects, usually layer by layer, from 3D CAD data'. Additive processes include Selective Laser Melting (SLM), Laser Metal Deposition (LMD), Stereolithography, Fused Deposition Modelling (FDM) and 3D Inkjet Printing (3DP). Each technology is often distinguished by the raw materials used (including powder, wire, photosensitive liquid resins, thermoplastic filament, printing inks) or by the method of consolidation (including laser heating and melting, photo polymerisation, conduction heating, chemical reaction).
AM is seemingly opposite to subtractive manufacturing approaches that remove material to form the shape of a work piece. The traditional metal removal processes such as milling, turning, grinding, electrical discharge machining (EDM), fall into this category.
For more information www.twi.co.uk/technologies/welding-coating-and-material-p...
If you wish to use this image each use should be accompanied by the credit line and notice, "Courtesy of TWI Ltd".
This nice aquinii form is large with good substance typical of this species. The recent development of this species by selective breeding in South America is amazing.
DDAY Veteran "Placid Lassie" in the skies over Peru, Illinois on a formation practice flight in preparation for the 2022 TBM Reunion.
The Persian is a long-haired breed of cat characterized by its round face and shortened muzzle. In Britain, it is called the Longhair or Persian Longhair. It is also known as the Shiraz or Shirazi, particularly in the Middle East. The first documented ancestors of the Persian were imported into western Europe from Persia around 1620.[1] Recognized by the cat fancy since the late 19th century, it was developed first by the English, and then mainly by American breeders after the Second World War.
The selective breeding carried out by breeders has allowed the development of a wide variety of coat colors, but has also led to the creation of increasingly flat-faced Persians. Favored by fanciers, this head structure can bring with it a number of health problems. As is the case with the Siamese breed, there have been efforts by some breeders to preserve the older type of cat, the traditional breed, having a more pronounced muzzle, which is more popular with the general public. Hereditary polycystic kidney disease is prevalent in the breed, affecting almost half the population in some countries.
The placid and unpretentious nature of the Persian confers a propensity for apartment living. It has been the most popular breed in the United States for many years but its popularity has seen a decline in Britain and France.
It is not clear when longhaired cats first appeared, as there are no known long-haired specimen of the African wildcat, the ancestor of the domestic subspecies. There were claims[by whom?] in the 19th century that the gene responsible for long hair was introduced through hybridization with the Pallas cat, but research in the early 20th century refutes this theory.
The first documented ancestors of the Persian were imported from Khorasan, Persia into Italy in 1620 by Pietro della Valle, and from Angora (now Ankara), Turkey into France by Nicholas-Claude Fabri de Peiresc at around the same time. The Khorasan cats were grey coated while those from Angora were white. From France, they soon reached Britain.[2] Longhaired cats were also imported to Europe from Afghanistan, Burma, China and Russia. Interbreeding of the various types were common especially between Angoras and Persians.[3]
Recent genetic research indicates that present day Persians are related not to cats from the Near East but to cats from Western Europe. The researchers stated, "Even though the early Persian cat may have in fact originated from ancient Persia, the modern Persian cat has lost its phylogeographical signature.
The first Persian cat was presented at the first organized cat show, in 1871 in the Crystal Palace in London, England, organized by Harrison Weir. As specimens closer to the later established Persian conformation became the more popular types, attempts were made to differentiate it from the Angora.[3] The first breed standard (then called a points of excellence list) was issued in 1889 by cat show promoter Weir. He stated that the Persian differed from the Angora in the tail being longer, hair more full and coarse at the end and head larger, with less pointed ears.[5] Not all cat fanciers agreed with the distinction of the two types, and in the 1903 book "The Book of the Cat" Francis Simpson states that "the distinctions, apparently with hardly any difference, between Angoras and Persians are of so fine a nature that I must be pardoned if I ignore the class of cat commonly called Angora".[6]
Dorothy Bevill Champion lays out the difference between the two types in the 1909 Everybody's Cat Book
Our pedigree imported long-hairs of to-day are undoubtedly a cross of the Angora and Persian ; the latter possesses a rounder head than the former, also the coat is of quite a different quality. The coat of the Persian consists of a woolly under coat and a long, hairy outer coat. In summer it loses all the thick underwool, and only the long hair remains. The hair is also somewhat shorter on the shoulders and upper part of the hind legs.
Now, the Angora has a very different coat, consisting of long, soft hair, hanging in locks, inclining to a slight curl or wave on the under parts of the body. The hair is also much longer on the shoulders and hind legs than the Persian, this being a great improvement; but the Angora fails to the Persian in head, the former having a more wedge-shaped head, whereas that of the modern Persian excels in roundness.
Of course. Angoras and Persians have been constantly crossed, with a decided improvement to each breed; but the long-haired cat of to-day is decidedly more Persian-bred than Angora.
My dear friend and Clan (family) member Irene
www.flickr.com/photos/irene2carton/
inspired me to try some selective color shots...she has done some that I think kicks all ass, so I hope this is up to speed.
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More in my set, "Marbles:"
www.flickr.com/photos/motorpsiclist/sets/72157632432129257/
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My photographs and videos and any derivative works are my private property and are copyright © by me, John Russell (aka "Zoom Lens") and ALL my rights, including my exclusive rights, are reserved and protected by United States Copyright Laws and International Copyright Laws. ANY use without my permission in writing is forbidden by law.
I have found that selective color and light trails work well, so here is another one for you! Here and here are my earlier shots with selective coloring and light trails.
I feel that I have to give some of the credit for this picture to xyking, as the idea to photograph a roundabout at night was his.
Feel free to stop by the rest of my photos, or you can see the ones I like.
Sigma 10-20mm