Marsilio Landriani (1 October 1751 – 13 March 1815) was an Italian chemist, physicist and meteorologist. He became known with his first book, (Physical investigations on the salubrity of air), published in 1775. In it he described a new instrument, the

eudiometer A eudiometer is a laboratory device that measures the change in volume of a gas mixture following a physical or chemical change. Description Depending on the reaction being measured, the device can take a variety of forms. In general, it is s ...

, which was later improved by Volta with the addition of spark wires. From 1776 he held the chair of experimental physics in the Brera Ginnasio (College). In 1781 he published his second book, (Physical-chemical pamphlets), which contributed to opening a new way to the theory of

acidity An acid is a molecule or ion capable of either donating a proton (i.e. hydrogen cation, H+), known as a Brønsted–Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid. The first category of acids are the ...

. Between 1787 and 1788 Guyton de Morveau and Antoine-Laurent Lavoisier tried to convince Landriani to change over to the new chemistry, but he never was able to decide between

phlogiston The phlogiston theory, a superseded scientific theory, postulated the existence of a fire-like element dubbed phlogiston () contained within combustible bodies and released during combustion. The name comes from the Ancient Greek (''burnin ...

and

oxygen Oxygen is a chemical element; it has chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen group (periodic table), group in the periodic table, a highly reactivity (chemistry), reactive nonmetal (chemistry), non ...

. After 1790 he dealt exclusively with chemical applications of electric phenomena, and the improvement of physics and meteorology instruments. During his career he enjoyed a popularity comparable only to that of Alessandro Volta and

Lazzaro Spallanzani Lazzaro Spallanzani (; 12 January 1729 – 11 February 1799) was an Italian Catholic priest (for which he was nicknamed Abbé Spallanzani), biologist and physiologist who made important contributions to the experimental study of bodily function ...

, of all Italian scientists of that time.

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* 1751 births 1815 deaths

Marsilio Marsilio is an Italian name most likely to refer to: *Marsilio Ficino (1433–1499), Italian scholar and Catholic priest It may also refer to: *Marco Marsilio (born 1968), Italian politician *Marsilio da Carrara (1294–1338), Lord of Padua *Mars ...

Scientists from Milan 18th-century Italian chemists 18th-century Italian physicists Italian meteorologists {{Italy-physicist-stub