Results 31 to 40 of about 658,110 (323)
What are the left-handed media and what is interesting about them? [PDF]
, 2004 We review the intensively discussed ideas about wave propagation and refraction in media where both electric permittivity and magnetic permeability are negative. The criticism against negative refraction as violating the causality principle is considered.
Bliokh, K. Yu., Bliokh, Yu. P.
core +1 more source
Przepisywanie Beowulfa: J.R.R. Tolkiena meandry przekładu
Między Oryginałem a Przekładem, 2018 Rewriting Boewulf: J.R.R. Tolkien’s Meandering Translation J.R.R. Tolkien’s works related to translation include both translations and adaptations in the form of pastiche.
Tomasz Markiewka
doaj +1 more source
Observation of negative refraction of Dirac fermions in graphene [PDF]
Nature Physics, 2015 Negative refraction has now been observed for Dirac fermions in graphene, and is used to create an electronic Veselago lens. Half a century ago, Veselago1 proposed ‘left-handed’ materials with negative permittivity and permeability, in which waves ...
Gil-Ho Lee +2 more
semanticscholar +1 more source
Tunable negative refraction without absorption via electromagnetically induced chirality [PDF]
, 2007 We show that negative refraction with minimal absorption can be obtained by means of quantum interference effects similar to electromagnetically induced transparency.
D. M. Cook +4 more
core +2 more sources
Geoplanning: Journal of Geomatics and Planning, 2021 The first velocity correction is used to correct the measured distance affected by the velocity variation of the electromagnetic wave propagation in a medium.
Felipe Andrés Carvajal Rodriguez +2 more
doaj +1 more source
Journal of Ophthalmology, 2016 The aim of the study was to determine the level of agreement between Javal’s rule, autorefraction, retinoscopy, and refractive astigmatism and to determine which technique is the most suitable substitute when subjective refraction is not applicable using
Kofi Asiedu +2 more
doaj +1 more source
Accuracy of noncycloplegic refraction performed at school screening camps
Indian Journal of Ophthalmology, 2018 Purpose: The aim of this study was to compare noncycloplegic refraction performed in school camp with that performed in eye clinic in children aged 6–16 years. Methods: A prospective study of children with unaided vision
Rolli Khurana +6 more
doaj +1 more source
Acta Polytechnica, 2021 This paper presents the results of over a year-long experiment dealing with a temperature measurement to calculate the theoretical effect of the atmosphere on the measured zenith angle in engineering surveying.
Tomáš Suk, Martin Štroner
doaj +1 more source
Nonlinear interfaces: intrinsically nonparaxial regimes and effects [PDF]
, 2009 The behaviour of optical solitons at planar nonlinear boundaries is a problem rich in intrinsically nonparaxial regimes that cannot be fully addressed by theories based on the nonlinear Schrödinger equation.
Boardman A D +10 more
core +2 more sources
ANALISIS PROSES TERJADINYA PENALARAN REVERSIBEL UNTUK MASALAH INVERS
Aksioma: Jurnal Program Studi Pendidikan Matematika, 2021 ujuan utama dari penelitian ini yaitu untuk menyelidiki proses terjadinya penalaran reversibel mahasiswa untuk masalah invers. Metode penelitian yang digunakan untuk mengungkapkan penalaran reversibel menggunakan metode penelitian kualitatif dengan ...
Muhammad Muzaini +2 more
doaj +1 more source