Objects imperceptible

While most of the previously mentioned causes of haze can create product defects, they do not normally occur if a process is carried out properly. The most frequent cause of haze in clear beverages is protein-polyphenol interaction (Bamforth, 1999 Siebert, 1999). This occurs normally and even when a beverage is properly stabilized, protein-polyphenol haze usually develops eventually. The objective is to delay its onset so that any haze produced is imperceptible until after a product s intended shelf life. 

You may well ask why, if my theories are correct, no such shadow has ever been seen. The answer, I think, is fairly simple. Subject to laws alien to those we know, and imperceptible to our range of vision, it is quite probable that the object does cast such a shadow, but of such a color as to be also invisible. 

The final effect plotted is William s "awareness of his own breathing." He feels that his breathing tends to become steadily deeper as he becomes more deeply hypnotized, but a 50 there is a sudden change in his perceived breathing it becomes extremely shallow, almost imperceptible, and stays that way through the rest of the hypnotic state, it is not known whether an objective measure of respiration would show any changes at this point william did not actually stop breathing. 

Fig. 1 The Platonic solids are the most beautiful bodies according to Plato. Like molecules, these imperceptibly small objects were thought to compose the physical world...

Although Aristotle developed a powerful matter theory, he was, like Plato, not an atomist. He argued that there were too many logical problems with the idea of indivisible, imperceptible objects that nonetheless had fixed existence. While Platonic and then later Aristotelian philosophy came to dominate Western thinking about the material world, the atomist thought of Democritus did not disappear completely. The philosophical school founded by Epicurus of Samos (341-270 b.c.e.) based its theory of matter on atoms. Our best record of Epicurean atomism comes from the Roman poet Lucretius (95—55 b.c.e.), who wrote a poem entitled De rerum natura (On the Nature of Things). Lucretius says ... 

However, as long as we confine discussion to small changes, the first objection is probably trivial and the second is certainly trivial an increase of 1% followed by a second increase of 1% produces an overall increase of only slightly more than 2%, close enough to 2% for the difference to be virtually imperceptible. 

The formation of language must have preceded these institutions. The idea of expressing objects by conventional signs may seem above the reach of human intelligence at this stage of civilisation, but it is likely that such signs were introduced into common use as the work of time, by degrees, almost imperceptibly. 

For these distinctions see, in particular, Sellars [1963] Bachelard [ 1996] (first publication 1957) and Rheinberger [1997]. Sellar s distinction between manifest and scientific images largely coincides with the distinction between perceptible and imperceptible objects (see also van Brakel [2000] pp. 41-46). 

See Pomata and Siraisi [2005] p. 27. It should be noted that Pomata and Siraisi do not distinguish here between experimental history and experimental philosophy, as we do. Experimental philosophy also highlighted detailed description, but its objects of inquiry were not particulars. Furthermore, the meaning of the objects of inquiry in experimental philosophy was constituted in philosophical discourse and hence thoroughly underdetermined by observation. See also below in this chapter the section on experimental inquiries into the imperceptible dimension of chemical substances. ... 

Throughout the entire period of classical chemistry from the middle of the eighteenth century until the middle of the twentieth century, chemists studies of the composition of chemical substances and of regrouping in chemical reactions switched from the imperceptible to the perceptible dimension of substances. The interplay between perceptible and imperceptible objects of inquiry was not merely a matter of chemists interests and intentions, but was built into the very technique and collective understanding of chemical analysis. The imperceptible objects—chemical components and their movements in chemical reactions—could not be separated technically and epistemicaUy from the perceptible dimension of substances. Rather, the study and representation of imperceptible features of a substance always entailed the material production of new perceptible substances that had first to be examined and identified before conclusions concerning the imperceptible objects could be drawn. 

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