Such a beam must come " straight " to the observer along a line which connects the observer with the position of the object when it emitted the light.

Such " dark stars " were largely ignored in the nineteenth century, since it was not understood how a massless wave such as light could be influenced by gravity.

Such reaction requires addition of energy in the form of heat or light.

Such semi-transparent sheets also strongly reflect infrared light, making them useful as infrared ( radiant heat ) shields in visors of heat-resistant suits, and in sun-visors for spacesuits.

Such algorithms take into account not only the light which comes directly from a light source ( direct illumination ), but also subsequent cases in which light rays from the same source are reflected by other surfaces in the scene, whether reflective or not ( indirect illumination ).

Such lasers are said to be superluminescent, and emit light with low coherence but high bandwidth.

Such distortions of Germanic mythology were denounced by J. R. R. Tolkien, e. g. in a 1941 letter where he speaks of Hitler's corruption of "... that noble northern spirit, a supreme contribution to Europe, which I have ever loved and tried to present in its true light.

Such PLCs typically have a restricted regular instruction set augmented with safety-specific instructions designed to interface with emergency stops, light screens and so forth.

Such weather phenomena as fog, clouds, rain, falling snow, and sleet that block visible light are usually transparent to radio waves.

Such independent organization persisted until the 2nd century BC amongst light infantry and cavalry, but was discarded completely in later periods with the supporting role taken instead by allied troops.

Such dispersion of light in glass or water underlies the origin of rainbows and other optical phenomena, in which different wavelengths appear as different colors.

Such effects occur when light is reflected off the " silk " ( the structurally oriented rutile needle inclusions ) in a certain way.

:" Such algebras have an intrinsic value for separate detailed study ; also they are worthy of comparative study, for the sake of the light thereby thrown on the general theory of symbolic reasoning, and on algebraic symbolism in particular.

Such devices include mirrors and filters, usually treated with optical coatings, which are designed to reflect light over a certain range of wavelengths, and transmit light which is outside that range.

Such local currency initiatives have been more widely criticized in light of limited success stimulating new spending in local economies and as an unrealistic strategy to reduce carbon emissions.

Such minerals are composed of parallel fibers ( or contain fibrous voids or inclusions ), which reflect light into a direction perpendicular to their orientation, thus forming narrow bands of light.

Such structural colouration causes the iridescence of the peacock's hues, since unlike pigments, interference effects depend on light angle.

Such inks are usually visible under ultraviolet light.

Such local currency initiatives have been more widely criticized in light of limited success stimulating new spending in local economies and as an unrealistic strategy to reduce carbon emissions.

Such reactions are usually conducted in the presence of an acid catalyst or UV light.

Such spontaneous posterior dislocations ( akin to the historical surgical procedure of couching ) in ancient times were regarded as a blessing from the heavens, because some perception of light was restored in the cataractous patients.

Such misunderstandings can arise from a number of sources.

" Such theories were seen by many to contradict his views on scientific rationality ; he repeatedly stated that these theories held his attention due to the high quality of their presentation — a quality he believed established sources should attempt to emulate, rather than resorting to attacking their originators.

" Such a position is shared by most commentators such as Richard Heard who sees historical deficiencies as arising from " special objects in writing and to the limitations of his sources of information.

Such connections have been acknowledged by many modern artists, modern day " griots ", spoken word artists, mainstream news sources, and academics.

Such arguments have tended to focus on cases where the Talmud and other traditional sources express multiple or more liberal viewpoints, particularly where the role of women in the past was arguably broader than in more recent times.

Such sources are now of secondary commercial importance, and most are no longer worked.

Such an " understanding " requires that the relevant information sources be semantically structured.

Such sources do not need extensive radiation protection – only a small cup of lead.

Such is most of typical total dosage ( with mean annual exposure from other sources amounting to 0. 4 mSv from cosmic rays, 0. 007 mSv from the legacy of past atmospheric nuclear testing along with the Chernobyl disaster, 0. 0002 mSv from the nuclear fuel cycle, and, averaged over the whole populace, 0. 6 mSv medical tests and 0. 005 mSv occupational exposure ).

Such facilities might be nuclear or coal-fired power stations, or hydroelectric, while other renewable energy sources such as concentrated solar thermal and geothermal power have the potential to provide base load power.

Such languages typically do not include declarations of types ( or make them optional ), so the only sources of what types are allowed are the names themselves, documentation such as comments, and by reading the code to understand what it does.

Such species have desirable traits such as being fast-growing sources of wood, producing oil that can be used for cleaning and functions as a natural insecticide, or an ability to be used to drain swamps and thereby reduce the risk of malaria.

Such children were generally used as sources of unpaid labor.

Such a holistic approach would help clarify both intent and sources of synergy and disconnect between business model, strategy, scorecards, information, innovation, processes and IT systems.

Such sources reproduce only a hazy image of Eric's activities in Anglo-Saxon England.

Such technologies convert sunlight into usable heat ( water, air, thermal mass ), cause air-movement for ventilating, or future use, with little use of other energy sources.

Such details are corroborated by many other sources.

Such sources typically emit from a large area, which makes them suitable for backlights of LCD displays.

Such responsa are key sources for Conservative Halakha, which has its particular methodologies and history.

Such historical sources recount that during an early visit to Jerusalem some time before 1096, Jesus appeared to Peter the Hermit in the Church of the Holy Sepulchre, and bade him preach the crusade.

Such an approach saves FASM sources from compiling problems often present in many assembly projects.

Such measures are very often used in the United States when other revenue sources, such as taxes, are limited or non-existent.

Such sources could include: absorbing a native language spoken in a different dialects or countries, a language other than their own and fictional language from books, music, films and videogames.

Such scholars ( e. g. Sebastian Muenster ) have relied on Muslim sources who traditionally used the word Kalmyk to describe the West Mongolians in a derogatory manner.

Such sources effectively may not conserve energy.