Not every relation is a function. But every function is a relation. Function is just a part of relation.
The cubic function.
Range
A formula or graph are two ways to describe a math function. How a math function is described depends on the domain of the function or the complexity of the function.
The Mandelbrot graph is generated iteratively and so is a function of a function of a function ... and in that sense it is a composite function.
The bimetal thermometer was invented by Johan August Arfwedson in 1860.
It's bimetal so opens when warm releasing choke which richens mixture until warm enough to run without it.
Brass and Iron
Two different metals are used in bimetal elements because they have different coefficients of thermal expansion. When heated or cooled, these metals expand or contract at different rates, causing the bimetal strip to bend. This bending motion is used for various applications such as in thermostats or circuit breakers.
Increasing the length or thickness of the bimetal strip can provide more travel per degree of temperature change. Additionally, using bimetal strips with different types of metals or coatings can also help achieve greater movement for a given temperature change.
G
A bi-metal is constructed with two dissimilar metals bonded together. The expansion factor is different in each metal. When heat is applied the bi-metal will bend in the direction of the metal with the least amount of expansion factor.
When heated, a bimetal strip bends towards the side with the material that expands more quickly. This is because the faster-expanding material creates a greater force on that side, causing the strip to bend in that direction.
A bimetal mechanical thermometer is a type of thermometer that uses a strip made of two different metals bonded together. When the temperature changes, the strip bends due to the different expansion rates of the metals, causing a pointer to move across a scale indicating the temperature. These thermometers are commonly used in household and industrial applications.
thermostat
A bimetal thermometer is two strips of different metals that have been stuck together. because the two metals will have differing rates of expansion under heat, the strip will bend towards one side. if the thermometer is colder than standard temperature, the strip will bend towards the side with a higher expansion rate, and if it is hotter, than it will bend towards the metal with the lower expansion rate. Because the expansion is a fixed property of a metal, a bimetal thermometer will have a relative accuracy because of them.
When you mix steel with copper, you create a material called bimetal, which combines the properties of both metals. Bimetal can be used for various applications, such as in electrical wiring or industrial machinery, due to its enhanced strength, conductivity, and resistance to corrosion.