What is another word for theory of indicators?
Pronunciation: [θˈi͡əɹi ɒv ˈɪndɪkˌe͡ɪtəz] (IPA) 
The theory of indicators refers to the concept of using certain compounds or substances to indicate the presence or absence of an element, chemical, or reaction. To describe this idea more colorfully, one might use synonyms such as the "marker principle," the "signal concept," or the "indicator theory." These phrases capture the essence of the theory in a way that may be more approachable or memorable for some learners. Additionally, "indicator hypothesis" and "marker theorem" are two alternate versions of the same basic idea. No matter how one chooses to refer to this concept, understanding the theory of indicators is essential in the world of chemistry and beyond.
