The duration of an exposure is referred to as shutter speed, often even in cameras that don’t have a physical shutter, and is typically measured in fractions of a second. Aperture is expressed by an f-number or f-stop (derived from focal ratio), which is proportional to the ratio of the focal length to the diameter of the aperture. If the f-number is decreased by a factor of sqrt 2, the aperture diameter is increased by the same factor, and its area is increased by a factor of 2. The f-stops that might be found on a typical lens include 2.8, 4, 5.6, 8, 11, 16, 22, 32, where going up “one stop” (using lower f-stop numbers) doubles the amount of light reaching the film, and stopping down one stop halves the amount of light.

Exposures can be achieved through various combinations of shutter speed and aperture. For example, f/8 at 8 ms (=1/125th of a second) and f/5.6 at 4 ms (=1/250th of a second) yield the same amount of light. The chosen combination has an impact on the final result. In addition to the subject or camera movement that might vary depending on the shutter speed, the aperture (and focal length of the lens) determine the depth of field, which refers to the range of distances from the lens that will be in focus. For example, using a long lens and a large aperture (f/2.8, for example), a subject’s eyes might be in sharp focus, but not the tip of the nose. With a smaller aperture (f/22), or a shorter lens, both the subject’s eyes and nose can be in focus. With very small apertures, such as pinholes, a wide range of distance can be brought into focus.

Image capture is only part of the image forming process. Regardless of material, some process must be employed to render the latent image captured by the camera into the final photographic work. This process consists of two steps, development and printing.

[text from wikipedia]

In the late 18th century, there was a buttonwood tree at the foot of Wall Street under which traders and speculators would gather to trade informally. In 1792, the traders formalized their association with the Buttonwood Agreement. This was the origin of the New York Stock Exchange.[6]

In 1789, Federal Hall and Wall Street was the scene of the United States’ first presidential inauguration. George Washington took the oath of office on the balcony of Federal Hall overlooking Wall Street on April 30, 1789. This was also the location of the passing of the Bill Of Rights

In 1889, the original stock report, Customers’ Afternoon Letter, became the The Wall Street Journal, named in reference to the actual street, it is now an influential international daily business newspaper published in New York City.[7] For many years, it had the widest circulation of any newspaper in the United States, although it is currently second to USA Today.[8] It has been owned by Rupert Murdoch’s News Corp. since 2007.

It's raining..it's pouring...

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• Do a cartwheel.
  Sing into your hairbrush.
  Walk barefoot in wet grass.
  Play a song you like really loud, over and over.
  Dot all your “i”’s with smiley faces.
  Read the funnies. Throw the rest of the paper away.
  Dunk your cookies.
  Play a game where you make up the rules as you go along.
  Step carefully over sidewalk cracks.