Essays in Physics

2021 ◽  
Author(s):  
Geoffrey Brooker
Keyword(s):  
Free Energy ◽  
Perturbation Theory ◽  
Atomic Physics ◽  
Subject Matter ◽  
Photon Emission ◽  
Standard Material ◽  
The Subject ◽  
Feedback Stability ◽  
Correct Understanding ◽  
University Course

“Essays in Physics” gives accounts of 32 chosen topics. The level is that of a 3–4-year university course in Physics. The topics discussed are diverse but “mainstream”. Each essay aims to say something fresh that complements what the reader will find elsewhere. Just what “fresh” means inevitably depends somewhat on the subject matter. Some chapters give a “different” slant on a familiar idea (e.g. electromagnetic energy, Lorentz transformation, photon emission). Some contain an analysis not available elsewhere (diffraction, feedback stability). Some correct material that is commonplace in many textbooks (much atomic physics). Some add insightful discussion to standard material (free energy, Brillouin zones). One in particular refines technique (perturbation theory). One brings order to confusion (-m dB). The aim in all cases is to encourage a fuller, and correct, understanding, and an enhanced intellectual acuity (critical faculty). With a subject as mature as physics, it is bold to claim originality. However I will dare to make that claim, in particular for Chapters 10, 22 and 30, but also for parts of most other chapters.

scholarly journals Comments on the contents of the dependability terminology standard

Dependability ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 34-37
Author(s):  
B. P. Zelentsov
Keyword(s):  
Subject Matter ◽  
Middle Ground ◽  
Logical Consistency ◽  
The Subject ◽  
Basic Concepts ◽  
Correct Understanding ◽  
Interstate Standard

Aim. The long-lasting discussion of the dependability-related terminology is evidence of the relevance of the subject matter and, at the same time, identifies difficulties associated with finding middle-ground solutions. This article aims to eliminate the shortcomings associated with the application of the conventional, yet insufficiently substantiated terms in the GOST 27.002-2015 interstate standard. Correct understanding and use of terms are of great significance. Methods. The paper lays down the requirements for the used terminology in terms of internal logical consistency and identifies specific terms, the use of which violates such requirements. Several terms from the standard underwent a logical and terminological analysis based on statutory requirements and the semantic meanings of such terms. Findings and conclusions. The paper states that the perfection of terms, definitions and basic concepts comes down to the fact that a standard shall not contain synonyms, homonyms and terms previously adopted in other standards with new or modified definitions. The terminological analysis helped to identify the terms whose use is unjustified. It was noted that the term “dependability” is clearly defined as a property, whose content and meaning are set forth with adequate substantiation. However, other definitions of dependability in the standard are not substantiated. Several cases of the use of terms that do not comply with the proposed requirements were considered, e.g., “dependability estimation”, “dependability indicators estimation”, “state of item”, etc.

The Rutherford Memorial Lecture, 1962 Atomic physics and the strength of metals

1963 ◽  
Vol 275 (1361) ◽  
pp. 149-160 ◽  
Keyword(s):  
Crystal Structures ◽  
Atomic Physics ◽  
Subject Matter ◽  
Present Status ◽  
Practical Importance ◽  
Memorial Lecture ◽  
Present Position ◽  
The Subject

In the previous Rutherford lecture Sir Lawrence Bragg (1961) gave an account of the history and present position of crystallography. Crystallography consists of the study of the regular ways in which atoms or molecules are arranged in solids, and crystallographers now investigate substances of ever-growing complexity. At the same time, alongside crystallography, there has grown up a science which is related to it, namely, a study of the ways in which these regular arrangements can break down. If there are many thousands of crystal structures known in nature, you would guess that there must be tens of thousands of possible defects; this may be so, but in fact the study of defects is confined at the present time to those which are observed in the simpler crystal structures, in metals, oxides and so on, and so we are far from knowing the full complexity that may exist. Actually, however, there is one form of defect which has a certain simplicity and very great theoretical and practical importance, namely, the dislocation. It is the history and present status of this concept that form the subject matter of this lecture.

Words

PMLA ◽  
1935 ◽  
Vol 50 (4) ◽  
pp. 1320-1327
Author(s):  
Colbert Searles
Keyword(s):  
Subject Matter ◽  
Assistant Professor ◽  
The Subject

THE germ of that which follows came into being many years ago in the days of my youth as a university instructor and assistant professor. It was generated by the then quite outspoken attitude of colleagues in the “exact sciences”; the sciences of which the subject-matter can be exactly weighed and measured and the force of its movements mathematically demonstrated. They assured us that the study of languages and literature had little or nothing scientific about it because: “It had no domain of concrete fact in which to work.” Ergo, the scientific spirit was theirs by a stroke of “efficacious grace” as it were. Ours was at best only a kind of “sufficient grace,” pleasant and even necessary to have, but which could, by no means ensure a reception among the elected.

The Taxonomic Structuring of Medical Information and its Usefulness in this Form

1965 ◽  
Vol 04 (03) ◽  
pp. 112-114 ◽  
Author(s):  
H. Zinsser
Keyword(s):  
Subject Matter ◽  
Medical Information ◽  
Central Core ◽  
Diagnostic Strategy ◽  
Programmed Instruction ◽  
Orderly Fashion ◽  
The Subject

An outline has been presented in historical fashion of the steps devised to organize the central core of medical information allowing the subject matter, the patient, to define the nature and the progression of the diseases from which he suffers, with and without therapy; and approaches have been made to organize this information in such fashion as to align the definitions in orderly fashion to teach both diagnostic strategy and the content of the diseases by programmed instruction.

العربية المقاربة المقاصديّة في ردّ ابن فودي على القادح في جلستهم الدعويّة

2018 ◽  
Vol 6 (3) ◽  
Author(s):  
Alawiye Abdulmumin Abdurrazzaq ◽  
Ahmad Wifaq Mokhtar ◽  
Abdul Manan Ismail
Keyword(s):  
Nineteenth Century ◽  
West Africa ◽  
Subject Matter ◽  
Analytical Methods ◽  
Men And Women ◽  
The Subject

This article is aimed to examine the extent of the application of Islamic legal objectives by Sheikh Abdullah bn Fudi in his rejoinder against one of their contemporary scholars who accused them of being over-liberal about the religion. He claimed that there has been a careless intermingling of men and women in the preaching and counselling gathering they used to hold, under the leadership of Sheikh Uthman bn Fudi (the Islamic reformer of the nineteenth century in Nigeria and West Africa). Thus, in this study, the researchers seek to answer the following interrogations: who was Abdullah bn Fudi? who was their critic? what was the subject matter of the criticism? How did the rebutter get equipped with some guidelines of higher objectives of Sharĩʻah in his rejoinder to the critic? To this end, this study had tackled the questions afore-stated by using inductive, descriptive and analytical methods to identify the personalities involved, define and analyze some concepts and matters considered as the hub of the study.

HUBUNGAN PROFESIONALISME PENDIDIK TK DENGAN KINERJA PENDIDIK DI TK RAYON IV KOTA DUMAI

2019 ◽  
Vol 3 (3) ◽  
pp. 660
Author(s):  
Ranirizal Ranirizal
Keyword(s):  
Learning Process ◽  
Subject Matter ◽  
Significant Relationship ◽  
Teacher Performance ◽  
Teacher Professionalism ◽  
Learning Material ◽  
The Subject ◽  
Performance Development ◽  
Kindergarten Educators ◽  
Academic Qualifications

Performance is the performance shown by educators, both in quality and quantity in carrying out their duties in accordance with the responsibilities given to them professionally. Educator performance development is a very decisive factor in the success of the education and learning process. In fact, in Kindergarten Rayon IV, Dumai City, there is still a low level of competency standards possessed by educators. The intended competency standard is from the standard academic qualifications and four competencies that must be possessed by a kindergarten educator, namely pedagogic, professional, social and personality competencies. This is evidenced by educators not yet mastering learning material with the maximum known when the learning process educators are not able to explain well the subject matter, and educators have not shown maximum performance in carrying out their duties and functions. The purpose of this study was to see whether there was an influence on teacher professionalism on teacher performance in Dumai IV Rayon Kindergarten. The results of the study prove that there is a significant relationship between the professionalism of Kindergarten educators and the performance of educators in Kindergarten Rayon IV, Dumai City. This is evidenced by the value of Sig (2-tailed) professionalism on educator's performance of 0,000, so the calculation shows 0,000 <0.05. This means that Ha is accepted, that is, there is a significant relationship between the professionalism of Kindergarten educators and the Performance of Educators in Kindergarten Rayon IV, Dumai City.

Justine Pila, The Subject Matter of Intellectual Property

2019 ◽  
Vol 23 (1) ◽  
pp. 142-144
Author(s):  
Patrick Masiyakurima
Keyword(s):  
Intellectual Property ◽  
Subject Matter ◽  
The Subject

Perpindahan dan Perubahan : Transportasi dalam Struktur Naratif Riwayat Perjalanan ke Amerika di Era Viktorian

Metahumaniora ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Ari J. Adipurwawijdana
Keyword(s):  
Nineteenth Century ◽  
Subject Matter ◽  
Henry James ◽  
World View ◽  
Democratic Society ◽  
Transportation Infrastructure ◽  
Material Base ◽  
Travel Narrative ◽  
Infrastructure System ◽  
The Subject

ABSTRAKRiwayat yang disajikan penulis Britania era Viktorian tentang perjalannnya ke Amerikamengasumsikan adanya sebuah jaringan prasarana transportasi. Sistem transportasiterkait dengan riwayat perjalanan (travel narrative) dalam tiga hal, yaitu (1) sebagaibasis material bagi perjalanan, (2) sebagai substruktur riwayat, dan (3) sebagai pokokpembicaraan dalam riwayat itu sendiri. Buku Domestic Manners of the Americans (1832)merupakan model bagi cara infrastruktur transportasi menentukan aspek naratologis,yaitu urutan dan perspektif dalam struktur naratif riwayat perjalanan. Karya tersebut jugamenyajikan transportasi sebagai pokok pembicaraan dalam teksnya itu sendiri walaupun tidaksejauh sebagaimana yang tampak pada The Amateur Emigrant (1895) karya Robert LouisStevenson. Dalam hal ini, The American Scene (1907) karya Henry James juga relevankarena, walaupun tidak secara gamblang membicarakan transportasi sebagai topik dantidak pula menampakkan ciri-ciri riwayat perjalanan, karya tersebut merepresentasicara wawasan Britania-Amerika trans-Atlantik dianggap sebagai sesuatu yang lumrah.Wawasan ini juga memandang menganggap perjalanan trans-Atlantik sebagai semacamperjalanan menembus waktu, yang menunjukkan ketidaknyaman para penulis Britaniaabad kesembilanbelas terhadap transformasi sosial ke masyrakat demokratis yangdirepresentasi secara metaforis oleh pemahaman mereka tentang Amerika.Kata kunci: catatan perjalanan Viktorian, transportasi, wisataABSTRACTNarratives presented by Victorian British writers about their travels to America assume theavailability of a transprtation infrastructure system. Such a system is related to the travelnarrative in three things, namely, (1) as a material base for travel, (2) as a narrative substructurehistory, and (3) as the subject-matter of the narratives. Fanny Trollope’s Domestic Mannerof the Americans (1832) is a model for the way transportation infrastructure determinesnarratological aspects, namely order and perspective in the structure of the travel narrative.The piece also presents transportation as a subject-matter in its text although it does notgo so far as do Robert Louis Stevenson’s The Amateur Emigrant (1895). In discussingtransportation Henry James’ The American Scene is also relevant because, despite it’s notexplicitly speaking of transportation as a topic nor does it show the convential characteristicsof the travel narrative, the work represents a British-American trans-Atlantic world viewas a given. This world view also considers trans-Atlantic travels as a kind of voyage acrosstime, implying the discomfort of nineteenth-century British writers concerning the socialtransition into a democratic society represented by America as a metaphor.Keywords: Victorian travel narrative, transportation, tourism

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