Vizsla ki persad biography of william henry

The third son of Thomas Henry—probably the most talented and certainly the most successful of the three—William Henry went first to a private school run by a Unitarian minister and then to Manchester Academy. From the age of ten an injury from which he never fully recovered, inflicted by a falling beam, prohibited him from normal boyhood activities, and he early developed a taste for study.

After leaving the academy about he became secretarycompanion to Thomas Percival and began preliminary studies in medicine. Henry became a member of the Manchester Literary and Philosophical Society in and began to carry out original research in chemistry. In he returned to Edinburg and received the M. He was elected a fellow of the Royal Society in and received the Copley Medal for papers already submitted.

In he described an attempt to determine the nature of muriatic acid hydrochloric acid ; although he obtained hydrogen and oxymuriatic acid chlorine on sparking muriatic acid gas over mercury, he attributed the former to water, from which he believed it was impossible to free the gas by chemical means. In Henry tried the new technique of electrolysis he was one of the first to experiment with this but considered it seriously limited on finding that the current could not be transmitted through gases.

WILLIAM SUN ROUND REASONS

Yet it was several years before he finally committed himself to them. At Manchester, in the winter of — he had given his first lecture demonstrations, firmly grounded in the new doctrines and nomenclature. His textbook, originally based on these lectures, was first published in ; it went to eleven editions, each larger than the previous one.

Stimulated by the recent trials of coal gas for lighting purposes, Henry set out to analyze various inflammable mixtures of gases obtained from coal and other materials of organic origin, with a view to determining their relative powers of illumination and to explain the differences in terms of their compositions. His investigations covered a period of more than twenty years, during which he gradually improved his analytic techniques.

As well as representing a significant contribution to the progress of the gas industry, his work confirmed that of Dalton on the compositions of methane and ethylene; and their conviction that hydrogen and carbon combined only in definite proportions, to form a limited number of compounds, preceded the general acceptance of this view.

In Dalton had been absorbed by the problem of why an atmosphere consisting of gases of different densities did not separate into layers. Henry had at first been among the many critics of the theory; but a suggestion made to him by Dalton in the light of it had enabled him to account for certain discrepancies in his solubility experiments, and he came out strongly in its defense.