Generally, at temperatures below four-degree kelvin, mercury becomes a superconductor. Yes, mercury is a superconductor at low to very low temperatures.
Increasing the tension will make the mercury fly off high in the sky. The speed of rotating liquid mercury depends upon the voltage of the DC inverter.
This experiment is also called a Lorentz force. It rotates the liquid mercury as it is a superconductor. When liquid mercury is poured into the container, and the current has flowed through the conductors, it generates a strong magnetic field. At the base, a large magnet is attached to generate magnetic attraction. It is connected to another pole of the DC. This pole has an electrically isolated brass bolt from the container at the center. It is made by connecting an aluminum anodized copper globe to an electrical wire in a DC pole. In addition to this, the magnetic permeability of mercury is weak and usually diminishes when the applied external magnetic field is absent.Ī liquid mercury vortex can be made using a DC inverter. The magnetic field of mercury becomes active only in the presence of an external magnetic field. It is the reason why mercury repels a magnet. As a result, mercury tends to exert pressure in the opposite direction to the magnet. The magnetic field exerts a force on this current-carrying conductor when the current moves through the mercury.Īs the diagram suggests, the current is moving in the radial direction (horizontally) while the permanent magnetic field is a vertical component, the Lorenz force is tangential. The magnetic susceptibility of mercury is less and usually negative.Īs per the right-hand thumb rule, when mercury is kept in an external magnetic field, there is an interaction that takes place between the electric current and the magnetic field. Mercury is magnetic because it shows cage diffusion being a superconductor and a strong diamagnet.Īlso, due to a filled electronic configuration makes it suitable to pass a continual electric current allowing it to repel a magnet in the presence of an external magnetic field. Once, the atoms move far from one another all the electrons reassemble to their original shells filling up all of them and eventually becomes paired. This magnetic moment makes mercury either strongly or weakly repel a magnet in the presence of an external magnetic field. It causes an electron to move out from an inner filled shell which results in the formation of the magnetic moment. On October 6, 2014, technical changes were made to allow viewers to review the list in order of mercury levels and in alphabetical order by fish species.It is a phenomenon that occurs when atoms in a liquid come very close to each other. The changes corrected data or more properly characterized the species of fish or shellfish sampled. NOTE: On February 8, 2006, technical changes were made to the data that was posted on January 19, 2006. ‡Standard deviation data generated from data 1990 to 2012.ģIncludes: Sea bass (black, Striped), Rockfish †The following species have been removed from the tables: ND-mercury concentration below detection level (Level of Detection (LOD)=0.01ppm) Source of data: FDA 1990-2012, "National Marine Fisheries Service Survey of Trace Elements in the Fishery Resource" Report 1978, "The Occurrence of Mercury in the Fishery Resources of the Gulf of Mexico" Report 2000 SPECIESīASS (SALTWATER, BLACK, STRIPED, ROCKFISH) You may also sort the table by SPECIES in alphabetical order. The table is sorted by MERCURY CONCENTRATION MEAN (PPM) from fish with lowest levels of mercury to highest levels of mercury. See also Mercury Concentrations in Fish: FDA Monitoring Program
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