Portrait of Thomas Clarkson Â© Clarkson was a leading campaigner against the slave trade and slavery in Britain and the British empire.Thomas Clarkson was born on 28 March 1760 in Wisbech, Cambridgeshire. He was the son of a clergyman who also taught at the local grammar school.he following year, Clarkson published his book 'History of the Abolition of the African Slave Trade' and, although his health was now failing, continued to campaign for the complete abolition of slavery. In 1833, parliament passed the Slavery Abolition Act, which gave all slaves in the British empire their freedom.
corrosivity in Medicine. corrosive corÂ·roÂ·sive (kÉ-rÅ'sÄ­v, -zÄ­v) adj. Causing or tending to cause the gradual destruction of a substance by chemical action. n. A substance having the capability or tendency to cause slow destruction.
For other uses, see Diffusivity (disambiguation) . Diffusivity or diffusion coefficient is a proportionality constant between the molar flux due to molecular diffusion and the gradient in the concentration of the species (or the driving force for diffusion).Diffusivity is encountered in Fick's law and numerous other equations of physical chemistry.ypically, a compound's diffusion coefficient is ~10,000Ã as great in air as in water. Carbon dioxide in air has a diffusion coefficient of 16 mm 2 /s, and in water its diffusion coefficient is 0.0016 mm 2 /s.