09-27-2021-2023 - chemical oscillator mercury beating heart

A chemical oscillator is a complex mixture of reacting chemical compounds in which the concentration of one or more components exhibits periodic changes, They are a class of reactions that serve as an example of non-equilibrium thermodynamics with far-from-equilibrium behavior. The reactions are theoretically important in that they show that chemical reactions do not have to be dominated by equilibrium thermodynamic behavior.

In cases where one of the reagents has a visible color, periodic color changes can be observed. Examples of oscillating reactions are the Belousov–Zhabotinsky reaction (BZ), the Briggs–Rauscher reaction, and the Bray–Liebhafsky reaction.

https://en.wikipedia.org/wiki/Chemical_oscillator

The mercury beating heart is an electrochemical redox reaction between the elements mercury, iron and chromium. The reaction causes a blob of mercury in water to oscillate.

The observeable reaction demonstrates an effect of a non-homogeneous electrical double layer.^[1][2] It is often used as a classroom demonstration.

https://en.wikipedia.org/wiki/Mercury_beating_heart

https://en.wikipedia.org/wiki/Mercury_(planet)

The symbol for the planet Mercury(☿) has been used since ancient times to represent the element

Native mercury with cinnabar, Socrates mine, Sonoma County, California. Cinnabar sometimes alters to native mercury in the oxidized zone of mercury deposits.

Mercury-discharge spectral calibration lamp

A pound coin (density ~7.6 g/cm³) floats in mercury due to the combination of the buoyant force and surface tension.

Amalgam filling

The bulb of a mercury-in-glass thermometer

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  The miniaturized Deep Space Atomic Clock is a linear ion-trap-based mercury ion clock, designed for precise and real-time radio navigation in deep space.

A Single-Pole, Single-Throw (SPST) mercury switch.

Mercury manometer to measure pressure

Mercury, ₈₀Hg

Mercury
Appearance	shiny, silvery liquid
Standard atomic weight Ar, std(Hg)	200.592(3)[1]
Mercury in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson Cd ↑ Hg ↓ Cn gold ← mercury → thallium
Atomic number (Z)	80

https://en.wikipedia.org/wiki/Mercury_(element)