Rheostat. an electric device for controlling and limiting current or voltage in an electric circuit. The principal component of a rheostat is a conducting element with variable resistance.The magnitude of this resistance may be varied smoothly or in discrete steps.heostat. an electric device for controlling and limiting current or voltage in an electric circuit. The principal component of a rheostat is a conducting element with variable resistance. The magnitude of this resistance may be varied smoothly or in discrete steps.
troy ounce: $992.00: $990.00: Rhodium : Rh : troy ounce: $1860.00: $1860.00: Iridium : Ir : troy ounce: $990.00: $990.00: Ruthenium : Ru : troy ounce: $200.00: $200.00: Osmium : Os : troy ounce : $400.00: Rhenium : Re : pound : $1290.00: Gold : Au : troy ounce : $1323.90: Silver : Ag : troy ounce : $16.450 : Last update:
From 1986 to 1988, the monthly average New York dealers price of rhodium ranged from $1,150 to $1,300 per ounce. In early 1989, the announcement of problems at South Africaâs Rustenburg Platinum precious metals refinery caused the price to jump to more than $2,000 per ounce. To convert to dollars per kilogram, multiply by 32.1507. Note: 1911-29, New York price of refined metal, in Hill, J.M., 1922, The marketing of platinum: Engineering & Mining Journal-Press, p. 718. 1930-66, Producer price at New York of 99.9%-pure palladium, in Engineering & Mining Journal, Mineral and Metal Markets.