Physics & Reality

Physics & Reality

Chevalier des Mots·2 Temmuz 2017 Pazar

> Ekte ayrica, sana daha once bahsettigim Roger Newton'un kitabindan > bazi kisimlar. Bunlar hakkindaki dusuncelerini yaz. Ben yazdim, > ama daha sonra sana gonderecegim. Vesselam, - Sakir.

26/4/2001

Selam Efendi, dedigin gibi bu ilginc bir kitaba benzer, interloan'dan temin edemezsem Amazon'dan ismarliyacagim insallah..

Newton, R.G. (1997. The Truth of Science: Physical Theories and Reality. Harvard University Press. Cambridge: MA. 260 pp.

p. 176

Bohr's reaction to such ontological questions was unequivocal. Always professing a lack of interest in reality, he palced his emphasis on language. "What is it that we human beings ultimately depend on?" he asked.

We depend on our words. Our task is to communicate experience and ideas to others. We must strive continually to extend the scope of our description, but in such a way that our messages do not thereby lose their objective and unambiguous character. We are suspended in language in such a way that we cannot say what is up and what is down. The word "reality" is also a word, a word which we must learn to use correctly.12

eh Bohr'dan da boyle guzel bir soz etmesini beklerdim dogrusu...ben sana daha onceleri de soylemistim bu Bohr fizikciler arasinda felsefi bakimdan en saglikli dusunen bir bilim adamiydi, bu adamin seviyesinde saglikli bir dil yapisina sahip bir baskafizikciye rastlamadim desem yeridir.

Accordingly, he came to the conclusion that

There is no quantum world. There is only an abstract quantum mechanical description. It is wrong to think that the task of physics is to find out how Nature is. Physics concerns what we can say about nature.13

tabii burada yaniliyor, bu da reality/hakk kelimesini kullanmayi bilmediginden kaynaklaniyor, halbuki Kitabimiza gore hakk bilinebilir ve de ifade edilebilir, kelimelerle dile getirilebilir. Onun icin Bohr'un yukaridaki sozunu LW'nun ifadesiyle kaynatsak suna indirgenmis olur:

Physics concerns what we can say about nature, except how nature is.

Bu kavramsal yapi icinde bu cumleyi duzeltmenin bir yolu yok tabi, cunku burada realite kelimesi yok "nature" denirken de ne denmek istendigi acik degil. Halbuki burada soylenmek istenen Kitabimizdaki iki saglam kelimeyle soyle ifade edilebilirdi:

Physics concerns to express the umur which composes and conducts the Nature of things, physics is all about to put the reality of things (which emerge according to the umur) into words to know, to understand it(this reality) and to express and teach it(this reality) to others. And here 'thing" can also be defined according to the Book. Gordugun gibi emr/hakk/sey/kelime/bilmek kelimeleriyle Bohr'un soylemeye calistiginin 10 misli daha anlamli bir cumle kurulabilir.

Heisenberg had similar views, but from a somewhat different perspective. He too placed a strong emphasis on language: "Every description of phenomena, of experiments and their results, rests upon language as the only means of communication." 14

Heisenber and Bohr were living together and thinking together even in the mountains, I am sure those were all aware of LW's works.. gerisi masal, vesselam..

p. 177

The essential point to be stressed, and to that extent I agree with both Bohr and Heisenberg, is that realism is a matter of scale. It is one thing to be a realist at the scale of everyday life and experience, but quite another to try to carry that realism to the micro world, where neither our experience nor our language is adequate. We insist upon formulating what is happening at the micro level in terms of either "particles" or "waves," and in order to understand it - not just mathematically - we seem to have no other choice. While the results of observations and experiments can and must be described in a "classical," everyday language, the micro phenomena are not suited to such a vocabulary.

p.184

Entanglement of particle-events that are spatially far separated, however, is counter-intuitive and strikes us as weird, because our intuitive grasp of corpuscules [particles] is that they are individual and localized. We have no instinctive feeling for mutual dependency of bounded objects, while we have little difficulty understanding the interdependency of extended entities like waves, which may overlap. ------------ 12 Quoted by Aage Petersen. "The Philosophy of Niels Bohr," Bulletin of the Atomic Scientists, 19 (September 1963), pp. 10-11. 13 Ibid p. 12; italics in original. 14 Heisenberg, Physics and Philosophy, p. 144. > >