Is light a wave or a particle? 10.4236/psych.2015.610119 737 Downloads 1,007 Views Citations, Why the Speed of Light (c) Keeps Constant? However, neither a classical wave model nor a classical particle model correctly describes light; light has a dual nature that is revealed only in quantum mechanics. 3,722 Downloads 5,455 Views Citations, The Architectural Expression of Space and Form Created by the Light in the Works of Alvaro Siza (Articles), Journal of Building Construction and Planning Research Since the mid-20th century, a more comprehensive theory of light, known as quantum electrodynamics (QED), has been regarded by physicists as complete. On the grandest scale, light’s interactions with matter have helped shape the structure of the universe. English Franciscan philosopher and educational reformer Roger Bacon shown in his observatory at the Franciscan monastery, Oxford, England (engraving c. 1867). We catch glimpses of its nature when a sunbeam angles through a dust-filled room, when a rainbow appears after a storm or when a drinking straw in a glass of water looks disjointed. Among the initial scholars were al-Khwārizmī and al-Kindī. Indeed, light provides a window on the universe, from cosmological to atomic scales. This property forms the basis of the fields of optics and optical communications and a myriad of related technologies, both mature and emerging. Epicurus (c. 300 bce) believed that light is emitted by sources other than the eye and that vision is produced when light reflects off objects and enters the eye. No single answer to the question “What is light?” satisfies the many contexts in which light is experienced, explored, and exploited. Vol.3 No.7，November 20, 2012, DOI: Vol.3 No.10，October 21, 2011, DOI: Well, it's not a particle. Melanopsin is most sensitive to short-wavelength blue light and so by increasing or decreasing the proportion of these blue wavelengths in white light, we can enhance alertness, or promote sleep, respectively.” In particular, al-Maʾmūn, the seventh ʿAbbāsid caliph of Baghdad, founded the House of Wisdom (Bayt al-Hikma) in 830 ce to translate, study, and improve upon Hellenistic works of science and philosophy. 470 Downloads 843 Views Citations, A Scheduling Strategy of Light Supplement in Agricultural Greenhouse Based on the Displacement of Light Source Group (Articles), Journal of Applied Mathematics and Physics The spectral regions adjacent to the visible band are often referred to as light also, infrared at the one end and ultraviolet at the other. This property forms the basis of the fields of optics and optical communications and a myriad of related technologies, both mature and emerging. Test your physics acumen with this quiz. Through the sense of sight, light is a primary tool for perceiving the world and communicating within it. 4,830 Downloads 8,129 Views Citations, A Clinico-Pathological Study of Poly Morphous Light Eruption (Articles), Prasad Pullabatla, Kaviarasan Pitchai Kaliyaperumal, Udhay Sidhu, J. of Cosmetics, Dermatological Sciences and Applications 10.4236/jbcpr.2014.22011 Light transmits spatial and temporal information. Psychology Vol.6 No.10，August 5, 2015 DOI: 10.4236/psych.2015.610119 6,946 Downloads 9,800 Views Citations 10.4236/as.2014.54028 Or, more specifically, it has the metaphorical power of great fiction. Vol.1 No.3，September 30, 2011, DOI: 3,216 Downloads 3,795 Views Citations, The Hybrid Light Source for Projection Display (Articles), Qingying Deng, Hua Chen, Guohui Li, Jianquan Yao, Optics and Photonics Journal I write to you today to ask for your support in helping us keep moving forward. Technological applications based on the manipulations of light include lasers, holography, and fibre-optic telecommunications systems. 10.4236/jemaa.2010.23026 3,728 Downloads 5,888 Views Citations, Regulation of Photoassimilate Distribution between Source and Sink Organs of Crops through Light Environment Control in Greenhouses (Articles), Lina Wang, Xiaoyu Yang, Zhonghai Ren, Xiufeng Wang, Agricultural Sciences With the decline of the Greco-Roman realm, scientific progress shifted to the Islamic world. 10.4236/nm.2013.42015 Light transmits spatial and temporal information. Vol.2 No.3，July 26, 2012, DOI: Almost all of the information about the rest of the universe reaches Earth in the form of electromagnetic radiation. Copyright © 2006-2020 Scientific Research Publishing Inc. All Rights Reserved. We are bathed in yellow warmth every day and stave off the darkness with incandescent and fluorescent bulbs.But what exactly is light? Vol.5 No.2，May 22, 2015, DOI: Vol.8 No.8，August 26, 2020, DOI: (Articles), Optics and Photonics Journal 4,057 Downloads 6,705 Views Citations, Light Microbeams by Tapered Glass Capillaries for Biological Irradiation (Articles), Wei-Guo Jin, Kyohei Katoh, Tatsuya Minowa, Tokihiro Ikeda, Journal of Computer and Communications Our editors will review what you’ve submitted and determine whether to revise the article. Vol.6 No.8B，August 30, 2016, DOI: Light is at once both obvious and mysterious. 10.4236/jcc.2013.17002 Let us know if you have suggestions to improve this article (requires login). Black Friday Sale! QED combines the ideas of classical electromagnetism, quantum mechanics, and the special theory of relativity. 56 Downloads 171 Views Citations, Synthesis of Chained Achromatic Layer Systems Forming Controlled Low Transmittance Bands (Articles), Optics and Photonics Journal Vol.7 No.4，April 28, 2017, DOI: Vol.4 No.3，March 14, 2013, DOI: 10.4236/ojoph.2015.52013 Vol.9 No.7，June 15, 2018, DOI: The analysis of the frequencies of light emitted and absorbed by atoms was a principal impetus for the development of quantum mechanics. 10.4236/opj.2016.68B039 6,169 Downloads 8,419 Views Citations, International Journal of Astronomy and Astrophysics 10.4236/opj.2011.13021 Technological applications based on the manipulations of light include lasers, holography, and fibre-optic telecommunications systems.. Hi, Kejraj here. While there is clear evidence that simple optical instruments such as plane and curved mirrors and convex lenses were used by a number of early civilizations, ancient Greek philosophers are generally credited with the first formal speculations about the nature of light. 4,021 Downloads 6,820 Views Citations, Control of light environment: A key technique for high-yield and high-quality vegetable production in protected farmland (Articles), Xiaoyu Yang, Xiufeng Wang, Lijuan Wang, Min Wei, Agricultural Sciences This surprising wave-particle duality is shared by all of the primary constituents of nature (e.g., electrons have both particle-like and wavelike aspects). Omissions? 10.4236/ajps.2018.97102 Euclid (c. 300 bce), in his Optics, presented a law of reflection and discussed the propagation of light rays in straight lines. 4,433 Downloads 5,066 Views Citations, RETRACTED: The Validation of a Week-Long Questionnaire against Objective Measures of Light Exposure among a Sample of University Students (Articles), Open Journal of Ophthalmology Premium Membership is now 50% off! Where does light come from? Who was the first scientist to conduct a controlled nuclear chain reaction experiment? Vol.5 No.4，March 7, 2014, DOI: Learn how about the sun, electricity and fire produce light in this BBC Bitesize KS1 Science guide. Psychology of Light: How Light Influences the Health and Psyche, A New Analysis Method for Locating the Focus and for Estimating the Size of the Focus of the Backscatter Light of a LIDAR System, A Clinico-Pathological Study of Poly Morphous Light Eruption, Regulation of Photoassimilate Distribution between Source and Sink Organs of Crops through Light Environment Control in Greenhouses, The division and bending of green and red semiconductor laser light at the same time, Light Microbeams by Tapered Glass Capillaries for Biological Irradiation, Simulation Study of Heliostat-Based Daylighting System for Multi-Story Buildings, RETRACTED: The Validation of a Week-Long Questionnaire against Objective Measures of Light Exposure among a Sample of University Students, The Impact of the Earth’s Movement through the Space on Measuring the Velocity of Light (Part Two). Light from astronomical objects comes in a wide range of colors, each corresponding to a particular kind of electromagnetic wave. 10.4236/opj.2017.74006 An Academic Publisher, Psychology of Light: How Light Influences the Health and Psyche (Articles), Rosella Tomassoni, Giuseppe Galetta, Eugenia Treglia, DOI: 10.4236/ns.2011.310114 Based on what’s unfolding on the world stage, a few sources say that NESARA is closer than ever, but it has become difficult to know the stages of such events for certain. Electromagnetic waves and the electromagnetic spectrum, NeoK12 - Educational Videos and Games for School Kids - Light and Optics, light - Children's Encyclopedia (Ages 8-11), light - Student Encyclopedia (Ages 11 and up). 5,562 Downloads 8,362 Views Citations, Alpha Rhythms Response to 10 Hz Flicker Is Wavelength Dependent (Articles), Francesco Ferro Milone, Antonio Tullio Minelli, Roberto Cian, Neuroscience and Medicine Electromagnetic radiation occurs over an extremely wide range of wavelengths, from gamma rays with wavelengths less than about 1 × 10−11 metre to radio waves measured in metres.
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