 He examined the electromagnetic theory of light of James Clerk Maxwell, introduced the concept of electromagnetic mass of a charged particle, and demonstrated that a moving charged body would apparently increase in mass.Much of his work in mathematical modelling of chemical processes can be thought of as early computational chemistry.In further work, published in book form as "Applications of dynamics to physics and chemistry" (1888), Thomson addressed the transformation of energy in mathematical and theoretical terms, suggesting that all energy might be kinetic.