Lot Essay
"The Bakerian Lecture delivered in November 1801 is an epoch-making contribution to the theory of light in all its phases. Hooke, Huygens and above all Newton had discussed the nature of light in the seventeenth century...but Young, in this and two subsequent papers printed in the Philosophical Transactions, July 1802, and his Bakerian Lecture, November 1803, based himself firmly on the theory that 'radiant light consists of undulations of the luminous ether': a theory that held the field until the latter-day notions of Planck and J.J. Thomson."--PMM 259.