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2. History of photography - Wikipedia

   en.wikipedia.org/wiki/History_of_photography

   The history of photography began with the discovery of two critical principles: The first is camera obscura image projection, the second is the discovery that some substances are visibly altered by exposure to light [2]. There are no artifacts or descriptions that indicate any attempt to capture images with light sensitive materials prior to ...

3. Wilson Bentley - Wikipedia

   en.wikipedia.org/wiki/Wilson_Bentley

   Wilson Bentley. Wilson Alwyn Bentley (February 9, 1865 – December 23, 1931), also known as Snowflake Bentley, was an American meteorologist and photographer, who was the first known person to take detailed photographs of snowflakes and record their features. [1] He perfected a process of catching flakes on black velvet in such a way that ...

4. Photographic developer - Wikipedia

   en.wikipedia.org/wiki/Photographic_developer

   Developer powder using genol-hydroquinone. In the processing of photographic films, plates or papers, the photographic developer (or just developer) is one or more chemicals that convert the latent image to a visible image. Developing agents achieve this conversion by reducing the silver halides, which are pale-colored, into silver metal, which ...

5. Crystal Hefner Opens Up About Relationship with New ... - AOL

   www.aol.com/lifestyle/crystal-hefner-opens...

   Ward, 41, who owns SeeThrough Sea on Kailua-Kona, has run adventure and photography tours since relocating to Hawaii in 2013. According to a business website, ... Crystal, whose confirmation ...

6. X-ray crystallography - Wikipedia

   en.wikipedia.org/wiki/X-ray_crystallography

   X-ray crystallography is the experimental science of determining the atomic and molecular structure of a crystal, in which the crystalline structure causes a beam of incident X-rays to diffract in specific directions. By measuring the angles and intensities of the X-ray diffraction, a crystallographer can produce a three-dimensional picture of ...

7. Snowflake - Wikipedia

   en.wikipedia.org/wiki/Snowflake

   Snowflake. A snowflake is a single ice crystal that has achieved a sufficient size, and may have amalgamated with others, which falls through the Earth's atmosphere as snow. [1][2][3] Each flake nucleates around a tiny particle in supersaturated air masses by attracting supercooled cloud water droplets, which freeze and accrete in crystal form.