Alan Dennis Clark | |
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Born | |
Nationality | British |
Alma mater | Imperial College London, City University London |
Known for | Monograph on Zoom Lenses, Physics in 5 Dimensions - Bye, bye Big Bang |
Scientific career | |
Fields | Applied physics, Theoretical physics |
Alan Dennis Clark is a British physicist and member of the American Physical Society. He was born in London in 1945.
After attending school at St Benedict's School in Ealing he studied at the City University London where he received his Bachelor of Science in Applied Physics in 1968 and at the Imperial College London where he received his Master of Science in Applied Optics, as well as the Diploma of the Imperial College, in 1969. Alan has lived in Germany since the 1980s.
After his university education, Alan Dennis Clark worked in the field of industrial optics initially as a designer, later as Marketing Director and MD of J.H. Dallmeyer Ltd., [1] London (founded by John Henry Dallmeyer in 1860, later continued by Thomas Rudolphus Dallmeyer). He later founded his own company MSE GmbH in Bonn, Germany working as an optical designer and marketing consultant offering a range of services to various high tech companies. From 1992-2016: Co-founder & MD of Clark & Fischer-Clark GmbH, Neunkirchen, Germany.
For over 35 years he has been extensively involved with the design-, marketing- and sales-activities of high technology companies requiring a clear understanding of the associated technologies and physics involved. The work requires the specification, design and supply of critical optical modules as essential components of high technology complex systems. As an optical design consultant he is designing lenses for industrial and commercial applications.
His interests cover a broad range of topics in physics and especially the bigger questions of physics and the universe still to be answered. Based on the work of the theoretical physicists of the early twentieth century, his in depth review of the fundamentals of physics resulted in the writing of the book "Physics in 5 Dimensions". The research work spanning many years was completed in tandem with earning a living from high technology industrial projects involving applied physics. The challenge arising from these parallel activities was the limit on time and resources for research and writing, while the major advantage was working on new perspectives of physics alongside "real time" applied physics for industrial projects. This ongoing interaction with industrial projects provided a broad based and very valuable experience of theoretical and practical physics.
The book "Physics in 5 Dimensions" describes in detail an objective view of physics. The current perspective of classical physics is summarised for each field of physics covered, using carefully edited material from identified sources. With this backdrop of classical physics, the theory of "Physics in 5 Dimensions" is presented in a clear manner with mathematical expressions to support the theory. These expressions are common and coherent across the various fields of physics covered and many "figures" illustrate the key relationships between parameters. Compared to classical physics, "Physics in 5 Dimensions" is a physically objective and significantly more unified theory of physics and the extensive results make a good case for replacing the "Big Bang Theory" with the "Theory of Physics in 5 dimensions" as the model of the development of the universe.
Optics is the branch of physics that studies the behaviour and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.
Physics is the natural science that studies matter, its fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. Physics is one of the most fundamental scientific disciplines, with its main goal being to understand how the universe behaves.
Atomic, molecular, and optical physics (AMO) is the study of matter-matter and light-matter interactions; at the scale of one or a few atoms and energy scales around several electron volts. The three areas are closely interrelated. AMO theory includes classical, semi-classical and quantum treatments. Typically, the theory and applications of emission, absorption, scattering of electromagnetic radiation (light) from excited atoms and molecules, analysis of spectroscopy, generation of lasers and masers, and the optical properties of matter in general, fall into these categories.
The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects. Optical microscopes are the oldest design of microscope and were possibly invented in their present compound form in the 17th century. Basic optical microscopes can be very simple, although many complex designs aim to improve resolution and sample contrast.
In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source. It is also known as disk of confusion, circle of indistinctness, blur circle, or blur spot.
A telephoto lens, in photography and cinematography, is a specific type of a long-focus lens in which the physical length of the lens is shorter than the focal length. This is achieved by incorporating a special lens group known as a telephoto group that extends the light path to create a long-focus lens in a much shorter overall design. The angle of view and other effects of long-focus lenses are the same for telephoto lenses of the same specified focal length. Long-focal-length lenses are often informally referred to as telephoto lenses although this is technically incorrect: a telephoto lens specifically incorporates the telephoto group.
A monocular is a compact refracting telescope used to magnify images of distant objects, typically using an optical prism to ensure an erect image, instead of using relay lenses like most telescopic sights. The volume and weight of a monocular are typically less than half of a pair of binoculars with similar optical properties, making it more portable and also less expensive. This is because binoculars are essentially a pair of monoculars packed together — one for each eye. As a result monoculars only produce two-dimensional images, while binoculars can use two parallaxed images to produce binocular vision, which allows stereopsis and depth perception.
A zoom lens is a mechanical assembly of lens elements for which the focal length can be varied, as opposed to a fixed-focal-length (FFL) lens.
Quantum optics is a branch of atomic, molecular, and optical physics dealing with how individual quanta of light, known as photons, interact with atoms and molecules. It includes the study of the particle-like properties of photons. Photons have been used to test many of the counter-intuitive predictions of quantum mechanics, such as entanglement and teleportation, and are a useful resource for quantum information processing.
SPIE is an international not-for-profit professional society for optics and photonics technology, founded in 1955. It organizes technical conferences, trade exhibitions, and continuing education programs for researchers and developers in the light-based fields of physics, including: optics, photonics, and imaging engineering. The society publishes peer-reviewed scientific journals, conference proceedings, monographs, tutorial texts, field guides, and reference volumes in print and online. SPIE is especially well-known for Photonics West, one of the laser and photonics industry's largest combined conferences and tradeshows which is held annually in San Francisco. SPIE also participates as partners in leading educational initiatives, and in 2020, for example, provided more than $5.8 million in support of optics education and outreach programs around the world.
Rudolf Kingslake was an English academic, lens designer, and engineer.
Optics began with the development of lenses by the ancient Egyptians and Mesopotamians, followed by theories on light and vision developed by ancient Greek philosophers, and the development of geometrical optics in the Greco-Roman world. The word optics is derived from the Greek term τα ὀπτικά meaning "appearance, look". Optics was significantly reformed by the developments in the medieval Islamic world, such as the beginnings of physical and physiological optics, and then significantly advanced in early modern Europe, where diffractive optics began. These earlier studies on optics are now known as "classical optics". The term "modern optics" refers to areas of optical research that largely developed in the 20th century, such as wave optics and quantum optics.
The Institute of Optics is a department and research center at the University of Rochester in Rochester, New York. The Institute grants degrees at the bachelor's, master's and doctoral levels through the University of Rochester School of Engineering and Applied Sciences. Since its founding, the institute has granted over 2,500 degrees in optics, making up about half of the degrees awarded in the field in the U.S. The institute is made up of 20 full-time professors, 12 professors with joint appointments in other departments, 10 adjunct professors, 5 research scientists, 11 staff, about 170 undergraduate students and about 110 graduate students.
Harold Horace Hopkins FRS was a British physicist. His Wave Theory of Aberrations,, is central to all modern optical design and provides the mathematical analysis which enables the use of computers to create the wealth of high quality lenses available today. In addition to his theoretical work, his many inventions are in daily use throughout the world. These include zoom lenses, coherent fibre-optics and more recently the rod-lens endoscopes which 'opened the door' to modern key-hole surgery. He was the recipient of many of the world's most prestigious awards and was twice nominated for a Nobel Prize. His citation on receiving the Rumford Medal from the Royal Society in 1984 stated: "In recognition of his many contributions to the theory and design of optical instruments, especially of a wide variety of important new medical instruments which have made a major contribution to clinical diagnosis and surgery."
Changchun University of Science and Technology is a key university in Changchun, Jilin, China, previously known as Changchun Institute of Optics and Fine Mechanics. It was founded by Wang Daheng in 1958.
Robert Louis Byer is a physicist. He was president of the Optical Society of America in 1994 and of the American Physical Society in 2012.
Transformation optics is a branch of optics which applies metamaterials to produce spatial variations, derived from coordinate transformations, which can direct chosen bandwidths of electromagnetic radiation. This can allow for the construction of new composite artificial devices, which probably could not exist without metamaterials and coordinate transformation. Computing power that became available in the late 1990s enables prescribed quantitative values for the permittivity and permeability, the constitutive parameters, which produce localized spatial variations. The aggregate value of all the constitutive parameters produces an effective value, which yields the intended or desired results.
Kehar Singh is an Indian optical physicist and an emeritus fellow of the Indian Institute of Technology, Delhi. He is a former CLUSTER chair professor at Swiss Federal Institute of Technology in Lausanne and a former professor of IIT Delhi. He has also served as an academic visitor at Imperial College of Science and Technology, London.
Joseph J.M. Braat is a Dutch optical engineer and scientist. Between 1973 and 1998 he worked at Philips Research Laboratories. He was professor of optics at Delft University of Technology between 1998 and 2008.
Walter Thompson Welford was a British physicist with expertise in optics.