January 2013

27.01.13 - OUT OF RANGE

Out of Range

It is not the clear-sighted who rule the world.

Great achievements are accomplished in a blessed, warm fog.

Joseph Conrad (1857-1924)

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    Principal point : point from which the focal length is measured. The principal point of a simple lens is located at the center of the lens. Compound lenses have two principal points, the location of which cannot be determined by appearance.

  • Deoxyribonucleic Acid [DNA]

    Deoxyribonucleic acid is a molecule that encodes the genetic instructions used in the development and functioning of all known living organisms and many viruses. DNA and RNA are nucleic acids; alongside proteins, they compose the three major macromolecules essential for all known forms of life.