View allAll Photos Tagged chemistry
INES VAN MEGEN-THIJSSEN PHOTOGRAPHY
website I my favorites I facebook
Don't use my images on websites or any other media without my permission.
© All rights reserved
"The happiest conversation is that of which nothing is distinctly remembered , but a general effect of a pleasing impression."
Samuel Johnson
Anh đã đến với em thật bất ngờ , nhưng chẳng khác nào một cơn lốc cuốn sạch sự bình yên trong cuộc sống của em . Anh chẳng cố tình đâu , em biết , nhưng chính sự vô tình vô ý ấy mới khiến nhịp đập của trái tim chưa bao giờ rung động nhiều đến thế .
...
Thật lòng em không bao giờ biết anh nghĩ gì về em cả . Với anh , em hẳn chỉ là một cô bé, tất nhiên không phải cô bé 13 đâu phải không anh ? Nhưng vẫn chỉ là một cô bé thôi . Anh không dám và không muốn xóa khoảng cách giữa chúng mình , nên anh càng lạnh lùng hơn và xa cách hơn . Hay là với anh , em cũng chỉ là một người giống như trăm người khác , như tất cả các cô gái đã từng biết anh , quen anh , và xúc động vì anh ?
...
Em lúc nào cũng tự nhủ không biết anh có đang bận không , rằng những thắc mắc của em có làm anh bực mình không , rằng việc trả lời em có làm anh tốn thời gian không … Vì vậy những câu hỏi của em dành cho anh đã thưa dần , và có lẽ sẽ chẳng bao giờ xảy ra nữa đâu anh .
...
[ trích kenh14.vn ]
♥ 17.05.2011 ♥
Taken by : me
Taken on : 16052011
Retouch by : me too
Perhaps the earliest reference to the concept of silver-based black and white photography is that of J. H. Schulze who observed in 1727 that a mixture of silver nitrate and chalk darkened on exposure to light. The first semi-permanent images were obtained in 1824 by Nicéphore Niepce, a French physicist, using glass plates coated with a dispersion of silver salts in bitumen (a coal derivative). In the early 1830’s, Niepce's partner, Louis Daguerre, discovered by accident that mercury vapor was capable of developing an image on a silver-plated copper sheet that had been previously sensitized by iodine vapor. The image, which was called a daguerreotype, could be made permanent by washing the plate with hot concentrated salt solution. In 1889 Daguerre demonstrated his photographic process to the Academy of Sciences in Paris. The process was later improved by using sodium thiosulfate to wash off the unexposed silver salts.
In 1841, an Englishman, William Henry Fox Talbot introduced a new system, the calotype process. The Talbot process involved a paper than had been sensitized to light by a coating of silver iodide. A negative image was produced on the exposed light-sensitive paper by bathing it in a solution of gallic acid in a development process essentially the same as that used today. If the paper base employed was semitransparent, the original negative image could be laid over another piece of sensitized paper which, when exposed and developed, yielded a "positive," or direct copy of the original. The process would be equivalent to what is termed "contact printing" today. Although the calotype process required less time than that of Daguerre, the Talbot images were not particularly sharp because of the fluidity of the medium employed to suspend the silver iodide crystals.
Originally, the silver salts were held on glass using egg white as a binder. This provided relatively sharp images although they were easily damaged. By 1871, the problem had been solved by Dr. R. L. Maddox, an amateur photographer and physician, who discovered a way to prepare gelatin dispersions of silver salts on glass plates. In 1887 George Eastman introduced the Kodak system in which a silver halide-in-gelatin dispersion was coated on a cellulose nitrate base and loaded into a camera. The camera could take 100 pictures and when all were exposed, camera and film were returned to Rochester, New York, for processing. With those innovations the age of modern photography had arrived.
© All rights reserved
17
I'd Really Love to See You Tonight (England Dan & John Ford Coley)
**Sometimes things just come together perfectly and with no rhyme or reason...8)
Nikonos V - UW Nikkor 35 2.5 - Fujicolor Superia 400 - Cinestill Cs41 chemistry - dslr scan - Negative Lab Pro
Models Desmond Pattinson and Vienna Hill pose together for a Date Night Fashion Spread.
Desmond is currently dating Marina Morimoto, from the looks of things, she should start worrying ;)
Be careful about reading health books. You may die of a misprint.
Mark Twain
Leggete con cautela i libri di medicina.
Potreste morire di un errore di stampa.
Mark Twain
A couple of quick shots from today. Processed using Photoshop and Topaz Labs.
Some of my videos: www.youtube.com/channel/UCM4oTnECzCgIqMBHM6qxYyA