Mercury (element)

chemical element with symbol Hg and atomic number 80

light source

thumb|Daguerreotype portrait of a daguerreotypist displaying daguerreotypes and cases pictured in an airtight frame, 1845 thumb|upright=1.1|Daguerreotype of Louis Daguerre in 1844 by Jean-Baptiste Sabatier-Blot

manometric unit of pressure

electric lighting source

The Restriction of Hazardous Substances Directive 2002/95/EC (RoHS 1), short for Directive on the restriction of the use of certain hazardous substances in electrical and electronic equipment, was adopted in February 2003 by the European Union.

Polarography is a type of voltammetry where the working electrode is a dropping mercury electrode (DME) or a static mercury drop electrode (SMDE), which are useful for their wide cathodic ranges and renewable surfaces. It was invented in 1922 by Czechoslovak chemist Jaroslav Heyrovský, for which he won the Nobel prize in 1959. The main advantages of mercury as electrode material are as follows: 1) a large voltage window: ca. from +0.2 V to -1.8 V vs reversible hydrogen electrode (RHE). Hg electrode is particularly well-suited for studying electroreduction reactions. 2) very reproducible electr

The torr (symbol: Torr) is a unit of pressure based on an absolute scale, defined as exactly of a standard atmosphere (101325 Pa). Thus one torr is exactly (≈ ).

nonrechargeable battery cell using zinc and mercury(II) oxide

thermometer

type of star with a prominent spectral line due to absorption from ionized mercury

unit of pressure

potential hazard from consuming fish

fictional chemical substance

Operation and description of the mercury-vapour rectifier

sequential-access refreshable memory, in which amplifier and a pulse shaper are connected between the output of the delay line and the input, creating a loop that maintains the signal

Wet chemical cell that produces a precise voltage

type of electrical switch

metallurgical process: extraction of silver by amalgamation

biogeochemical cycle involving mercury

Controversy

Wikimedia disambiguation page

relay using mercury metal