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Self-phase modulation (SPM) is a nonlinear optical effect of light–matter interaction. An ultrashort pulse of light, when travelling in a medium, will induce a varying refractive index of the medium due to the optical Kerr effect. [1]
Physics Forums is a question and answer Internet forum that allows users to ask, answer and comment on grade-school through graduate-level science questions. In addition, Physics Forums hosts the Insights Blog which is a collaborative blog sourced from verified experts on the community. Authors of scientific papers have used Physics Forums to ...
Physics (with Coursework) (Singapore) Yes Yes No Singapore only; last exam in 2014 syllabus: CIE 5059 Physics (with Coursework) (Singapore) Yes Yes No Singapore only; available from 2014; Coursework to be phased out from 2018 (to replace one-time practical assessment) syllabus: CIE 5064 Physics (Singapore) Yes Yes Exclusive
The nation's egg production fell 2.6% last month from a year ago and is projected to be down 1% this year ... white cage-free eggs were selling for about $5.26 a dozen last week — up nearly 90% ...
The following is a list of notable unsolved problems grouped into broad areas of physics. [1]Some of the major unsolved problems in physics are theoretical, meaning that existing theories seem incapable of explaining a certain observed phenomenon or experimental result.
Making those deadlines requires a workforce of more than 1.5 million drivers nationwide, according to the U.S. Bureau of Labor Statistics. Here's a look at how the UPS operates with the holiday ...
Chicago Pile-1 (1942): Enrico Fermi and Leó Szilárd build the first critical nuclear reactor (1942) Wu experiment (1956): Chien-Shiung Wu leads the team that disproves the conservation of parity in particle physics. Cowan–Reines neutrino experiment (1955): Clyde L. Cowan and Frederick Reines confirm the existence of the neutrino.
Credit - Carol Yepes—Getty Images. L enette Sparacino has had dental issues for as long as she can remember. “I’ve probably had at least 30 cavities over my lifetime, if not more,” she ...