platinum-iridium

platinum-iridium

(standard)
A standard, against which all others of the same category are measured. Usage: silly.

The notion is that one of whatever it is has actually been cast in platinum-iridium alloy and placed in the vault beside the Standard Kilogram at the International Bureau of Weights and Measures near Paris, as the bar defining the standard metre once was.

"This garbage collection algorithm has been tested against the platinum-iridium cons cell in Paris."

Compare golden.
References in periodicals archive ?
Each alloy can be clad to core materials such as copper or copper alloys, niobium, molybdenum, MP35N[R] and Ni-Co-Cr-Mo alloys, nitinol and nickel-titanium alloys, platinum alloys or platinum-iridium, silver, stainless steel (302, 304V, 316LVM), tantalum or tantalum-tungsten alloys, and titanium or titanium alloys.
The kilogram is currently defined in terms of the mass of a platinum-iridium artifact stored in France.
Can incorporate gold, platinum-iridium, tantalum, tantalum-tungsten, and similar alloys bonded to high-strength wires like 316LVM stainless steel, nitinol, and MP35N with 2 percent or more cladding thickness
The famous but gently-corroding platinum-iridium brick held near Paris will then be retired, the last basic unit to be defined by reference to an artifact.
This reference mass is used to calibrate national standards made of platinum-iridium alloy [2].
Conducted at the Budapest University of Technology and Economics in Hungary in cooperation with Erasmus Medical Center Rotterdam, Netherlands, the study investigated in vitro lesion formation in relation to ablation time and power delivered using 4-mm, nonirrigated, platinum-iridium catheters versus gold-tip catheters.
Experts are willing to make the changes so that it is no longer based on the mass of a solid cylinder of platinum-iridium alloy that sits beneath three layers of protective glass sealed in a locked vault in Sevres, France.
Where in France is the platinum-iridium cylinder which represents the standard kilogram stored in France?
The International Prototype Kilogram (IPK) or "Le Grand K," made in the 1880s, is a bar of platinum-iridium alloy kept in a vault near Paris.
The original standard is a century-old platinum-iridium cylinder stored in France.