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    Wyświetlanie 1-6 z 6
    Tytuł:
    O semantycznej i formalnej teorii poznania. Ajdukiewicz – Suszko – Woleński
    Autorzy:
    Olech, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/705783.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    metaepistemologiczny projekt Ajdukiewicza
    semantyczna teoria poznania
    klasyczna (subiektywna) teoria poznania
    formalna teoria poznania
    Husserlowska filozofia języka
    Opis:
    Metaepistemologiczny projekt Kazimierza Ajdukiewicza zwany „semantycz-n4 teorią poznania” postuluje, aby podchodzić do poznania od strony języka. Projekt ten zarazem uzasadnia ów analityczny postulat, wykazując, ze jeśli poznanie ma bye określone co do treści, to do poznania tak właśnie powinno się podchodzić. Podejście to pojmuje poznanie jako twór, na który składają się językowe znaczenia wyrażeń. Takie pojmowanie poznania posiada tę zaletę iż pozwala wykorzystać w epistemologii rezultaty uzyskane w metamatema-tyce do rozwiązywania pewnych tradycyjnych sporów epistemologicznych. Projekt formalnej teorii poznania przedstawił Roman Suszko. Inspiracją tego projektu była semantyczna teoria poznania Kazimierza Ajdukiewicza, której Roman Suszko nadal postać sformalizowaną. Kontynuatorem formalnoepiste-mologicznych badah Suszki jest Jan Wolehski. Pytanie, które autor artykułu stawia i na które udziela odpowiedzi, brzmi: jakie warunki winny bye spenio-ne, aby można było przejsc od klasycznej (subiektywnej) teorii poznania do teorii poznania rozumianej semantycznie, a w szczególności do jej sformalizo-wanej postaci, i aby zarazem wyniki uzyskane na gruncie semantycznej teorii poznania były równoważne wynikom uzyskanym na gruncie teorii poznania pojmowanej klasycznie?
    Źródło:
    Przegląd Filozoficzny. Nowa Seria; 2013, 4; 425-444
    1230-1493
    Pojawia się w:
    Przegląd Filozoficzny. Nowa Seria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ajdukiewicz, Husserl i Tarski – w sprawie semantycznej teorii poznania
    Ajdukiewicz, Husserl and Tarski-Concerning the Semantic Theory of Knowledge
    Autorzy:
    Olech, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/561366.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Semiotyczne
    Tematy:
    Kazimierz Ajdukiewicz
    Edmund Husserl
    Alfred Tarski
    Anna Jedynak
    Jan Woleński
    semantyczna teoria poznania
    semantyczna teoria prawdy
    intensjonalna i ekstensjonalna interpretacja języka
    intencjonalna teoria wyrażeń
    poznanie określone co do treści
    związek języka i myślenia
    Opis:
    The aim of this paper is to show the importance of intentional theory of language of Edmund Husserl for Ajdukiewicz’s theory of language, and hence for his semantic theory of knowledge. As far as Tarski’s semantic achievements from the ‘30s, they provided to Ajdukiewicz the legitimisation for the transition from his reflection about the linguistic world-picture, i.e. the world of linguistic intensions, into the reflection about the world, i.e. the world of lingustic extensions. But in spite of that, the purely-philosophical climate of Ajdukiewicz’s semantic theory of knowledge is from the spirit of Husserl.
    Niniejszy artykuł ma polemiczny charakter. Polemizuje on z głosami tych filozofów, którzy w semantycznej teorii poznania Kazimierza Ajdukiewicza widzą znaczący i nadto wyłączny wpływ semantycznego dorobku Alfreda Tarskiego. Słuchając głosów tych filozofów można odnieść wrażenie, że przeoczyli oni fakt, iż termin „semantyka” znaczył co innego w wypadku Ajdukiewicza, prezentującego semantyczną teorię poznania, a co innego w wypadku Tarskiego, prezentującego semantyczną teorię prawdy. Z tą różnicą, dotyczącą znaczeń terminu „semantyka”, wiąże się inna, fundamentalna w wypadku obu tych logików różnica, a mianowicie ich odmienne podejście do języka, co zdaje się umykać uwadze tym piszącym o semantycznej teorii poznania, z którymi zamierzam polemizować. Podejście Ajdukiewicza było intensjonalne, natomiast podejście Tarskiego – ekstensjonalne, co mówiąc mam na myśli to, że dla pierwszego z nich podstawową była intensjonalna interpretacja języka, a dla drugiego – interpretacja ekstensjonalna. Filozofowie, z którymi polemizuję, przeoczają jeszcze jeden fakt, a mianowicie trudny do przecenienia wpływ, jaki na powstanie semantycznej teorii poznania miała intencjonalna teoria języka Edmunda Husserla. Niniejszy artykuł stara się przywrócić właściwą miarę Tarskiemu w tytułowej sprawie oraz oddać sprawiedliwość Husserlowi, bez filozofii którego semantycznej teorii poznania, jako metaepistemologicznego projektu, by nie było. A przecież to ów projekt legitymizował jego realizacje i dopiero w nich były wykorzystywane niektóre osiągnięcia semantyki Tarskiego.
    Źródło:
    Studia Semiotyczne; 2019, 33, 2
    0137-6608
    Pojawia się w:
    Studia Semiotyczne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    W sprawie pojęć uniwersalnych i transcendentalnych
    On Universal and Transcendental Concepts
    Autorzy:
    Olech, Adam
    Powiązania:
    https://bibliotekanauki.pl/articles/965378.pdf
    Data publikacji:
    1998-06-01
    Wydawca:
    Uniwersytet Warszawski. Wydział Filozofii
    Opis:
    In this paper the particulierity of universal and transcendental concepts is analyzed. The thesis of the article is following: as for the content of concepts - the transcendental ones are empty, contrary to the universal ones which always have some content. It is the author’s intention to address his article not only to philosophers - hence he passes over some complicated problems and keeps the use of logical appemetns - within reasonable limits.
    Źródło:
    Filozofia Nauki; 1998, 6, 2; 35-49
    1230-6894
    2657-5868
    Pojawia się w:
    Filozofia Nauki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Apagogiczne argumenty Zenona z Elei w apologii Parmenidesa
    Autorzy:
    Piętka, Dariusz
    Bigaj, Jan
    Olech, Adam
    Powiązania:
    https://bibliotekanauki.pl/books/2038103.pdf
    Data publikacji:
    2017
    Wydawca:
    Wydawnictwo Liberi Libri
    Opis:
    The considerations of Parmenides of Elea contained in the poem Περί φύσεως were a revolution in the thinking of ancient Greeks about what is the subject of philosophy and what attributes it possesses. Probably Parmenides’s theory of being and cognition was incomprehensible from an empirical point of view for contemporary Greek. Plato’s dialogue Parmenides shows that Parmenides of Elea’s theory was attacked. Zenon was a disciple of Parmenides who defended his philosophy. The subject of my research is the Zeno’s paradoxes formulated in defence Parmenides’s philosophy. I included the results of my research in a monograph Apagogic Zeno’s of Elea Arguments in Parmenides’s Apology. The book consists of four chapters and an appendix. The appendix is a philological justification of the paradigm in the light of which I read passages of ancient texts. The main idea that guided me at work was an adequate reading of Zeno’s paradoxes, firstly, within the epistemological and ontological assumptions of Parmenides which are contained in his epic poem Περί φύσεως, secondly, taking into account contemporary linguistic research. They shed new light on the syntactic functions of the verb „be” in ancient Greek and on the meanings in which it is occured. I mean the results of Ch. S. Kahn contained in his monograph The Verb „Be” in Ancient Greek, in which he argues that in ancient Greek there are no existential uses of this verb. Zeno’s arguments are often read in an existential way as arguments against the existence of multiplicity and against the existence of motion. For this reason I have reinterpreted paradoxes in the light of Kahn’s research, and to reformulate traditionally understood Parmenides ontology. The first chapter, entitled Parmenides’s Ontology, is focused, above all, on the interpretation of the principle expressed in fragment B 2.3 and its influence on the understanding of being. This text, however, tends to be interpreted diversely. Referring to other fragments of the epic poem, I conducted a philological analysis of the fragment, trying to answer the question whether this is an idiomatic expression or maybe this should be translated literally, interlinearly. What is (if there is any) the grammatical subject of the sentence? Does ἔστιν in the first part of this compound sentence have an implied predicative or does it constitute a separate predicate? What grammatical form does the whole sentence have? I present a number of interpretations, distinguishing six groups of translations that can be found in the literature on the subject. In my opinion, non-existential translations, with the implied grammatical subject indicated by Parmenides in the prologue to his works, comply with the philosopher’s intentions. The subject seems to be the object of knowledge, which is the ontological truth. This choice really is essential to Parmenides’s way of understanding the being. Then, I performed a logical analysis of each type of translation, coming to believe that the fragment is first in history clear expression of the ontological principle of non-contradiction. Despite being non-idiomatic, existential and literal, all other translations have a formal structure that corresponds with the principle. The non-contradiction that we read about in the epic poem is absolutist – the aspects of being are not distinguished in it. The object of knowledge (the ontic truth) cannot be anything else than it is. The absolutism of non-contradiction of being reveals the necessity of its identity. Parmenides searched for truth that had attributes of immutability and non-complexity. Non-contradiction, which is a formal condition of being, does not admit any change in Parmenides’s point of view and determines the immutability of Being. For every change would lead to a contradiction. The claim about an absolute identity of being leads to a conviction that it is completely non-complex, absolutely simple. Parmenides finds truth in Being that is immutable and non-complex. An important attribute which results from such a perspective is an attribute of definiteness and finiteness of Being. In the book, I present that Parmenides was first in the history of philosophy to introduce the concept of being in the form of the gerund to eon, which expresses everlasting time. In the part devoted to the truthfulness of Parmenides’s concept of being, I indicate that being belongs to another ontic plane than the mutable, complex and indefinite world of material objects. Thus, I stand in opposition to materialistic interpretations of Parmenides’s being. Taking into consideration the apologetic motives that made Zeno write his book of paradoxes, I present conclusions concerning the nature and attributes of Being that are confirmed by the object of paradoxes – change and plurality. On the other hand, in the light of these results, we get a clear background to answer the question why Zeno’s arguments are reasonings whose aim is to contradict plurality and motion, and why the concept of endless sequence, which leads to a number of theoretical difficulties, is emphasised in all of them. The second chapter of the monograph includes texts, my own translations, linguistic as well as logical and philosophical analyses of all paradoxes that were handed over to us by ancient philosophers. It consists of four paradoxes of plurality, the paradox of the Grain of Millet – that is sometimes classified as a paradox of plurality, but it seems that it can also be interpreted as a paradox of motion, which I justify in the book – and then four paradoxes of motion: the Dichotomy, Achilles and the Tortoise, the Arrow and the Stadium, and the paradox of Place. Ten paradoxes that survived in the works of later philosophers such as Plato, Aristotle, Simplicius and Diogenes were probably included in Zeno’s book compiled of forty arguments. The object of paradoxes is constituted by things that belong to the changeable and complex world, therefore the path that Zeno chose in order to substantiate Parmenides’s theory of being is quite different from the one that its creator walked. This is an indirect substantiation. It is supposed to prove the value of Truth and also be an expression of critical stand on opinions that lead to contradictions and, in consequence, do not provide valuable cognition. The polemic that Zeno had with the opponents of Parmenides reveals that the cognition of material world is imperfect since it results in contradiction and involves us in various theoretical difficulties that are far more serious than those following the universally non-intuitive path of Being. In the light of Kahn’s research results, I tried to demonstrate that the first of the discussed arguments against plurality [Zeno, 19, B 3; Simplicius, In Aristotelis Physicorum, 140.28] could be interpreted in both locative and referential ways. Hence, the phrase εἰ πολλά ἐστιν would mean that there are (are located) many things (scil. in the world) and emphasise the semantic aspect – they are true. This hypothesis on Zeno’s proof would emphasise both planes and it probably has a meaning that connects both syntactic and semantic aspects. Thus, it would mean the following: „there are many true things [scil. in the world]”. The referential interpretation („is” means the truth) consists in presenting the argument and stressing, above all, the semantic function of ἐστιν. The referential and truthful role of the verb „exist” also appears in Parmenides’s epic poem. „Exist” designates the object of knowledge – the true being. If we adopt such an understanding of ἐστιν, the phrase πολλά ἐστιν would mean „many things are true”. A certain subtlety included in the text can support this approach of Zeno. It is about using the concept of necessity. After the analysis of the argument’s structure, it turned out that the logical structure of both propositions that constitute the paradox was the same. These are conditional propositions in the form: if P, then Q. Formally speaking, the argument was conducted in accordance to the scheme: if P, then R and if P, then not-R, thus not-P. The second argument to be analysed was B 1 of Diels’s work [Zeno, 19, B 1, Diels; In Aristotelis Physicorum, 140.34], which, similarly to the first argument, has two parts. In the first part, the verb „is” can be understood in two ways: in the first place, as a second-order veritative expression, which would translate the premise of the argument in the following way: „if it is so that it is necessary…” (the second part of condition follows); in the second place, as a phrase in which the subject of the word „is” has not been stated explicitly just like it happens in fragment B 2.3. Thus, the translation would assume an essential and identical form: „if it is, then it is necessarily...” in which the phrase constitutes simultaneously the antecedent of the conditional proposition, thus the premise of the argument. Historians of philosophy usually interpret the text in an existential way: „if it exists, then it is necessarily...”. Unlike the veritative interpretation, essential and existential propositions will have the same logical structure. A significant result of my research was to observe that in the text, there are the so-called markers of truthfulness that induce to choose the veritative interpretation. They include the words εἰπεῖν and λέγειν. The veritative interpretation is different from other types of interpretation, above all, at the level of formality. The functor „if..., then...” has different arguments in the antecedent and the consequent position in both translations, thus it contains a broader proof assumption. The third argument, which is included B 2 in Diels’s work [Zeno, 19, B 2, Diels; In Aristotelis Physicorum, 139.9], is aimed at substantiating the conviction that complex things do not increase or decrease, which contradicts empirical experience. The paradox contains, above all, premises that constitute the result of a priori cognition (for example, a complex thing can be divided infinitely, hence infinitely small parts exist). It departs in its reasoning from connecting the concept of size with only something that is concrete and measurable in the world. Thus, the idea of infinitely small size, which does not have a measurable value, appears. It constitutes the result of infinite divisibility. If we divide something ad infinitum, we receive infinitely small parts. It seems that this idea would be later used in Eudoxus’s mathematical method of exhaustion. This was a method of measuring a geometric figure that consisted in extracting from it any part, bigger than the half of the figure, whose size was known. The step was repeated with other parts of the figure, extracting every time more than a half of what was left. The infinite number of these parts equals the area of the figure. The fourth paradox of plurality is the reasoning which Plato included in the Parmenides – this is called the argument by similarity and dissimilarity [Plato, Parmenides, 127e]. On the basis of comparative analysis of Plato’s texts with fragments from Simplicius’s work, I substantiate in the monograph that the argument is original and that Plato presumably did not change it significantly. In comparison to other paradoxes, this one is different because the concepts used in the paradoxes handed over by Simplicius (related to plurality) and Aristotle (related to motion) are measurable and refer to the category of quantity, whereas those used in Plato’s reasoning cannot be described quantitatively (at least it was not possible in antiquity). The fourth paradox that I discuss is called the paradox of Place [Aristotle, Physics, 209b; In Aristotelis Physicorum, 562.3–6]. The purpose of substantiation is a conviction that space cannot be a being or a being cannot be located in space. It can be understood as some form of a modern question whether a set of all sets is possible to exist, or, historically speaking, as a polemic with Melissus about the nature of being. The Grain of Millet [Physics, 250a; In Aristotelis Physicorum, 1108.18], the sixth paradox described in the book, can be understood in two ways. It is usually thought that Zeno’s intention is to reject plurality by stating that if a hundredth part of millet does not make a sound and a grain, which is the measurement of a sack of millet, does not make any sound either, then the sack itself will not make a sound. The lack of sound induces us to accept the conviction that there is no plurality that is called the sack. The Greek text, however, does not speak about the sack that does not make a sound (to which the translators often pay attention), but literally, it is about the fact that when a hundredth part of millet is falling on the ground, the air is not moving (μὴ κινεῖν τὸν ἀέρα). The argumentation is opposed to the possibility of motion, but from a different perspective that it is presented in other paradoxes of motion. In the Grain of Millet, it is the cause of motion, not the path, which an object has to travel, that is divided. If as a result of the division the part of the grain is so small that it does not have a mass, then it will not disturb anything. The paradox also tends to be interpreted as an argument undermining the value of sensory cognition and its inconsistency with intellectual cognition. Another class of arguments that I explore and analyse after the paradoxes of plurality are the paradoxes of motion. They are mainly presented by Aristotle in the Physics [239b], which also contains his own commentaries. The first paradox is the Dichotomy, which consists in the endless division of a stretch of path. In order to break Zeno’s argumentation, Aristotle develops the theory of potential and actual infinity. He resolves the paradox using a paraphrase, in which the concept of time and path is employed. At the same time, he acknowledges, however, that if we read the text literally, taking into consideration only the path, the difficulties will remain. The second argument against motion that I discuss in the book is Achilles and the Tortoise, which was constructed according to a similar idea related to the infinite division of path. Aristotle, however, expounded it in a perfunctory and incomplete way. In the monograph, I paraphrased and supplemented the argument, coming to believe that it was conducted in accordance with the scheme modus ponendo ponens. It indicates that the argumentation which Aristotle presented was probably reformulated by the philosopher himself. The arguments: Dichotomy and Achilles and the Tortoise complement one another. The Achilles shows that a runner cannot reach a certain place even if he has started his race, whereas the Dichotomy states that he cannot even start running. The third paradox of motion is the Arrow. Unlike Achilles and the Tortoise and the Dichotomy, it considers time dependence, indicating that the flying arrow is always in a now, which is related to space. Being in a now means being at rest. Therefore, rest is being motionless in space. I also pay attention to the fact that contrary to other Zeno’s reasonings, the concept of infinity does not play a significant role in argumentation. The author refers to, above all, the concept of finiteness and indivisibility of periods of time. Following the concept of non-complexity and simplicity, it results that change is impossible if it is located in non-complex and simple points. The last argument that I discuss is the Stadium. It causes a number of difficulties that result from an ambiguous message of Aristotle. A very detailed analysis of interpretation problems can be found in Ross’s work. In the monograph, I present his analysis and interpretation of this paradox, which is different from a traditional interpretation based on Alexander’s scheme. I try to analyse these paradoxes in an exhaustive and complementary way, examining every time the syntactic structure of argumentation and the semantic form. Defending Parmenides, Zeno stands out against plurality and change, indirectly substantiating that from the empirical perspective, objections against the attributes of non-complexity and immutability of being lead to even greater difficulties – falling into contradiction as a result of acknowledging plurality and change. The majority of paradoxes has the form of inference based on the modus tollendo tollens, sometimes called dialectic, which laid foundations of the future procedure of indirect proof. Paradoxes use the concept of infinity, which is an antinomic concept. In his paradoxes, Zeno uses a certain general scheme of reasoning, which consists in making an assumption that in order to be a specific part (of the body, length, path, time, place, quantity), something must have the definite whole. The infinite division (of the body, length, path, time, place, quantity) indicates, however, that such a whole does not exist in the world. If it does not exist, then its parts do not exist either. All arguments are supposed to prove that cognition based on empirical experience and the use of principles that are typical of knowledge, leads to insurmountable difficulties. The third chapter of the monograph concerns epistemological and ontological assumptions made by Zeno. I make an attempt to reconstruct his philosophical opinions on the basis of works by later writers, for whom the content of the paradoxes played the most vital role. I divide the chapter into three subsequent paragraphs, which are focused on the dialectic, the ontology of paradoxes and the theory of cognition. Zeno’s dialectic is the reductio ad impossibile (διά τοῦ ἀδυνάτου), based on the rule that is today called modus tollendo tollens. In the part devoted to the ontology, I try to reconstruct Zeno’s opinions on the subject of the unity of being and the structure of time and space. In the light of infinite divisibility, we can think, on the one hand, that the structure is continuous because between any two points on the time axis or segment of space one could indicate a point that is located in between them. The majority of paradoxes is constructed in such a way that a certain whole exists which is divided endlessly. Since things (solids in space) with size and thickness, as well as segments that constitute a model representation of path in space can be divided endlessly, their continuous structure should be recognised. Zeno’s arguments, however, also include the idea of discrete structure (like in the paradox of Achilles and the Tortoise). One could not say much about Zeno’s theory of cognition. In the monograph, I assume, above all, that he was under Parmenides’s strong influence. I present him as a moderate apriorist, who perceived, above all, rational cognition as valuable, but to some extent appreciated empirical experience (for example, he based his arguments against plurality and motion on empirical premises). We should also remember about Diogenes’s words. According to him, Zeno thought that in nature, everything came into existence out of the hot and the cold, the dry and the moist which changed from one into another and interpenetrated. People proceeded from earth and the soul was a harmonious mixture of warmth, cold, dryness and humidity. Zeno was also a naturalist and he rather did not reject empirical experience radically; yet, he perceived it as less valuable than reason. Assumptions concerning the boundaries of cognition should be understood differently in ancient Greece than in the post-Cartesian times. The only question regarded the possibility of surpassing in cognition that which was material and mutable in order to definitely and in an adequate way capture the immutable, incorporeal and non-complex reality, which constituted the source of immutable truth. Zeno is a philosopher whose indirect aim was to substantiate that such cognition was possible. The immanent and corporeal world is the object of opinions, whereas transcendent being constitutes the object of true cognition. The paradoxes in which Zeno acted against the generally recognised truths, such as motion and the plurality of things, persuaded philosophers from Pyrrho’s school to admit him as a sceptic. It is unlikely, however, that he really rejected the possibility of true cognition. He was indeed opposed to the truthfulness of opinions, but not knowledge. The fourth chapter, entitled Two ancient tendencies of interpretation of Parmenides’s nature of being is aimed at presenting Plato’s and Aristotle’s influence on the interpretation and understanding of Parmenides’s thought in later centuries. I also accept the hypothesis that the way of understanding Parmenides’s ontology and theory of cognition had a greater or lesser impact on the way paradoxes, or more broadly the philosophy of Zeno of Elea would be interpreted. In the monograph, I substantiate that Plato interpreted Parmenides’s concept of being in an idealistic way, whereas Aristotle understood it hylomorphically. For Plato, Being–the One was the essence (εἶδος), being one idea (οὖσαν ἰδέαν), the true being. Its attribute was that it was thought of as one and as always the same in. The One was transcendent, which meant that it surpassed the world of corporeal particulars. Aristotle, on the other hand, interpreted Parmenides’s being as a type of compound that consisted of the mutable material (which made up being) and the form. Transformations of the mutable material would be cyclical, so in terms of quantity, the matter did not change. Thus, this was a moderately realistic interpretation that ascribed attributes of quantitative immutability and unity to a certain whole composed of everything in a similar way as a whole was constituted by particulars with the difference that it did not concern immutability in terms of quantity. This was some conception of being as the world. The theoretical framework of Aristotle’s metaphysics made it possible to describe this conception from the point of view of the theory of form and matter and talk about it rationally within the scope of the conceptual framework of Metaphysics. The last part of my monograph is an appendix in which mainly the summary of Kahn’s work, The Verb „Be” in Ancient Greek, is presented.
    Dostawca treści:
    Biblioteka Nauki
    Książka
    Tytuł:
    Raport PKiM / PFN z działalności w latach 2023–2024
    The PKiM / PFN report on activities in 2023–2024
    Autorzy:
    Tymiński, Zbigniew
    Jaśkiewicz, Artur
    Zaręba, Paweł
    Mazur, Mirosław
    Stolarz, Marcin
    Żołądek, Przemysław
    Krzyżanowski, Tomasz
    Polakowski, Krzysztof
    Kwinta, Maciej
    Szlagor, Mariusz
    Węgrzyk, Walburga
    Wiśniewski, Mariusz
    Olech, Arkadiusz
    Gawroński, Marcin P.
    Żejmo, Michał
    Ogłoza, Waldemar
    Froń, Adam
    Tymińska, Katarzyna
    Gzik, Sylwia
    Aitov, Alexander
    Harachka, Yury
    Powiązania:
    https://bibliotekanauki.pl/articles/30146498.pdf
    Data publikacji:
    2024-04
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteorite
    Łowicz
    pseudometeorite Wyszków
    cosmogenic radionuclides
    Opis:
    Cosmogenic radionuclides in meteoroids are produced in space in the process of activation. These nuclides have various lifetimes in range from a few days to several hundred thousand years and can therefore be helpful in solving several problems related to the study of meteoroids and their remains, both in space and on the Earth. The simplest application of cosmogenic radionuclide decay in meteorites is to determine the terrestrial age of meteorites, especially those whose fall has not been observed. In this article, we present an additional application of cosmogenic radionuclide measurements, namely for the verification of origin of rocks that show equivocal features and may potentially represent meteorites.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2024, 15; 129-141
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Raport z działalności PKiM oraz PFN w latach 2021–2022
    Report on the activities of the PKiM and PFN in period 2021–2022
    Autorzy:
    Tymiński, Zbigniew
    Żołądek, Przemysław
    Jaśkiewicz, Artur
    Wiśniewski, Mariusz
    Stolarz, Marcin
    Polakowski, Krzysztof
    Kwinta, Maciej
    Krzyżanowski, Tomasz
    Laskowski, Janusz
    Łojek, Tomasz
    Michniewicz, Olga
    Szlagor, Mariusz
    Węgrzyk, Walburga
    Zaręba, Paweł
    Olech, Arkadiusz
    Gawroński, Marcin P.
    Mazur, Mirosław
    Żejmo, Michał
    Ogłoza, Waldemar
    Froń, Adam
    Gzik, Sylwia
    Powiązania:
    https://bibliotekanauki.pl/articles/2195016.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Meteorytowe
    Tematy:
    meteoroid
    bolide
    meteorite falls
    Polish Fireball Network
    Opis:
    The Polish Fireball Network (PFN), has been undergoing continuous development. Since then, several large grants have been obtained, which were at least partly used for modernization purposes. In recent years, two more grants have been obtained, which allowed for the expansion and modification of the existing PFN infrastructure. In 2021, the PFN76 Kozienice was modernized, but also the PFN14 Zielona Góra station was reactivated and the new PFN77 Suhora station was launched in 2022. Thanks to these improvements, the tracking of meteoroids entering the Earth Atmosphere above Poland became more accurate, which facilitates the search for meteorites and increases the chances of finding new fresh meteorites in Poland. On the night of May 10, 2021, PFN stations registered an exceptionally slow bolide. The phenomenon named PF100521 Wykrot appeared over central Poland in the Mazowieckie Voivodeship at 21:32 UT and calculations showed that some meteorites may have fallen. This phenomenon was used to conduct a series of analyzes to show how observational uncertainties affect the final results. Two variants of the results are presented in this work.
    Źródło:
    Acta Societatis Metheoriticae Polonorum; 2023, 14; 183-191
    2080-5497
    Pojawia się w:
    Acta Societatis Metheoriticae Polonorum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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