Twin lens reflex (TLR) : camera having two lenses of the same focal length. One is used for viewing and focusing, the other for exposing the film.
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.
