Newnham College Avery Hill Training College Huddersfield Municipal High School Clapham High School Dorothy Blanche Louisa Marshall (12 December 1868 – 1966) was a British chemist who worked at Girton, Avery Hill and the National Physical Laboratory.
She was one of the three daughters of Julian Marshall, connoisseur and collector, and Florence Ashton Thomas, musician and author .
Marshall was educated at King Edward VI High School for Girls, Birmingham (KEVI) and went to Bedford College in 1886.
As a postgraduate student at University College until 1894, Marshall studied heats of vaporisation of liquids .
[4] One of her three lengthy publications was co-authored with William Ramsay and the other one with Ernest Howard Griffiths, both appeared in 1896 and 1897.
In 1896, Marshall was appointed as Demonstrator at Girton College, Cambridge and promoted to Resident Lecturer in Chemistry a year later.
Marshall left Girton in 1906 to become a Senior Science Lecturer position at Avery Hill College.
Like many other women in chemistry, Marshall started war work in 1916, in aeronautical engineering.
This work was more in the realm of applied physics or engineering than pure chemistry, as it was looking at the heat flows of aero-engines.
She worked with the National Physical Laboratory as scientific research assistant until the end of her career.
So long, therefore, as the calorimeter and the surrounding walls were at equal temperatures, there was no loss or gain by radiation.
The apparatus was so designed that any such change in temperature was extremely small (in no case amounting to rhy°), yet, to estimate the loss or gain, it was necessary to know approximately the capacity for heat of the calorimeter and contents.
where L= heat in calories M = mass of liquid vaporised m = mass of copper deposited e= electrochemical equivalent of copper V = declustering potential in volts J = mechanical equivalent of heat Marshall calculated that the value of
for benzene is 94.4 cal[7] Although her early work was largely on the applied physics of heat and its effects, she later also published, as lead author or co-author, on other aspects of flow, such as boundary layer effects and eddies, which had great relevance to the streamlining of aircraft, some of which were widely cited by others.
& Miss Dorothy Marshall BSc The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science.
D Marshall, W Ramsay – The London, Edinburgh, and Dublin ..., 1896 – Taylor & Francis On the heats of vaporisation of liquids at their boiling-points.
Thomas Edward Stanton, Dorothy Marshall, R. Houghton, and Joseph Ernest Petavel.