In this figure ak′b is an isothermal, ak″ is the curve for the binary system, and K is the ternary critical point.
In this way we get the freezing point curve Ak1B for the binary system; k1; being an eutectic point.
This star is a binary system and the light of the two components together is about the same as that of Capella (Alpha Aurig).
The star 70 Ophiuchi (fig. 3) may be regarded as typical of a binary system.
Two centuries ago the distinguished philosopher and mathematician, Leibnitz, proposed a binary system of numeration.
It is not known that they constitute a binary system, because no certain evidence of motion has been obtained.
The close pair is a binary system with a long period of revolution, estimated at about two hundred years.