Watson observed the picture that Rosalind Franklin had taken without her knowledge. This photograph (photo 51) revealed key information on the DNA´s three-dimensional (3D) structure.
The British crystallographer Rosalind Franklin took a photograph (now universally known as Photo 51), which was fundamental for the DNA´s three-dimensional (3D) double helix structure of the DNA molecule.
Photo 51 is a diffraction image that displayed the manner a beam of X-rays scattered off a fiber of DNA.
Rosalind Franklin's original manuscript and her photo 51 are in the Linus Pauling Papers.
Photo 51 was used by Watson and Crick to decipher the double helix structure of the DNA molecule, which was published in 1953 in the journal Nature.
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