There are many more examples. Note that measuring each of these properties will not alter the basic nature of the substance. Examples of chemical properties are: heat of combustion, reactivity with water, PH, and electromotive force.
Mathematical fonts. In mathematical mode you can change the typefaces of the fonts when needed. For instance, it's customary to represent real numbers with a blackboard bold font, or topological spaces with calligraphic font. This article shows several fonts in math mode.
Typically a font-stack will include at least three font options: a web font youâve selected as the design font, a fallback generic font pre-installed on nearly all browsers and operating systems, and finally a generic font family that the browser can use to select a font from the fonts available on the system.