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:
How much does Californium cost per gram? Californium-252 is now being offered for sale by the Oak Ridge National Laboratory (O.R.N.L.) at a cost of $50/ug and Californium-249 at a cost of $160/ug plus packing charges â¦ .ubies are not measured in grams, rather carats. The average commercial grade ruby will cost $300 per carat. This, however, can go up dramatically depending on the stones colo â¦ r, clarity and overall cut. Also, important considerations are if it was been heat treated or enhanced.