Complex sentence: It is therefore assumed by physicists that no measurable quantity could have an infinite value, for instance by taking an infinite value in an extended real number system, or by requiring the counting of an infinite number of events.
Split into simpler sentences: It is therefore assumed by physicists that no measurable quantity could have an infinite value. For instance, by taking an infinite value in an extended real number system, or by requiring the counting of an infinite number of events.