Definitional questions

Various in situ and ex situ methods have been used to determine the real surface area of solid electrodes. Each method10,15 32 67,73 74 218 is applicable to a limited number of electrochemical systems so that a universal method of surface area measurement is not available at present. On the other hand, a number of methods used in electrochemistry are not well founded from a physical point of view, and some of them are definitely questionable. In situ and ex situ methods used in electrochemistry have been recently reviewed by Trasatti and Petrii.73 A number of methods are listed in Table 3. 

In 1997 the FDA again addressed the definitional question, issuing guidelines to clarify what constituted adequate provision for broadcast advertising. Under the new guidelines, drug broadcasts had to refer the audience to four sources to obtain further information ... 

Consider a set of N different objects, which may be human individuals, chemical compounds, or values of an analytical measure. The problem here is to select one of these objects possessing a certain property by answers to definite questions. 

Readers Guide Definitions, Questions, and Useful Functions... 

If we now consider prototypical chemistry-related issues from the debate about sustainable development and green chemistry many of them meet these criteria. Chemistry-related issues of sustainable development, like a more intense production and use of alternative fuels or bioplastics, are discussed in mass media. Regulations on their use will potentially have an impact on the students consumer choices. The use of alternative fuels or bioplastics is still controversial pro and con arguments are given in societal debate and can be used in students open debate. And, finally, these issues are definitely questions of chemistry and technology corresponding arguments are used in public debate. 

In their attempt Kaplow, Rowe, and Averbach search after a definite answer to a definite question what is the slightest distortion to be given to a certain crystal in order to fit the RDF of a related amorphous material They solve the problem without any physics being involved, but the final answer is much less precise than the mathematical procedure a-Se is supposed to consist of an undefined mixture of distorted 8-fold rings and... 

Sceptical theorists have been misinterpreted as going only so far as putting these definitional questions and moreover as implying that the behavioural questions are unimportant. While it... 

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