Albert Einstein (1879-1955) signed black and white photograph. The signature is signed in black ink and inscribed, ‘E=mc2.’ It's the world's most famous equation, it can be quoted by scientists and non-scientists alike, but what does it really mean? "Energy equals mass times the speed of light squared." On the most basic level, the equation says that energy and mass (matter) are interchangeable; they are different forms of the same thing. This item has been professionally custom matted and framed. Comes with a Letter of Authentication from Guaranteed Forensic Authenticators, along with the GFA guarantee of authenticity.

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