© Stefano Bianchetti/Corbis via Getty ImagesPortrait of James Clerk Maxwell (1831-1879). Scottish physicist.
Equations developed by renowned mathematician and physicist James Clerk Maxwell have helped to reveal how crystals can be manipulated to produce a distinctive form of light wave.
The phenomena — recently named Dyakonov-Voigt waves — could have a range of useful applications, such as improving biosensors used to screen blood samples or developing fibre optic circuits that transfer data more efficiently.
Scientists and engineers from the University of Edinburgh and Pennsylvania State University made the discovery by analysing how light — which travels in the form of waves — interacts with certain naturally occurring or man-made crystals.
They found that Dyakonov-Voigt waves are produced at a specific region — known as an interface — where the crystals meet another material, such as oil or water. These waves can be produced only using certain types of crystal whose optical properties depend on the direction in which light passes through them, researchers say.
The team identified the waves' unique properties using mathematical models that incorporated equations developed by James Clerk Maxwell. Since the mid-1800s, research on how light interacts with crystals has built on the work of Maxwell, who studied at the University of Edinburgh from the age of 16.
Dyakonov-Voigt waves, named after two leading scientists, diminish as they move away from the interface — a process called decay — and travel only in a single direction, the team found. Other types of so-called surface waves decay more quickly and travel in multiple directions.
Dr. Tom Mackay, of the University of Edinburgh's School of Mathematics, who jointly led the study, said: "Dyakonov-Voigt waves represent a step forward in our understanding of how light interacts with complex materials, and offer opportunities for a range of technological advancements."
The study is published in Proceedings of the Royal Society A.
More information: Tom G. Mackay et al, "Dyakonov-Voigt surface waves", Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences (2019). DOI: 10.1098/rspa.2019.0317
The confirmation of light decay is a big step forward for cosmology. The so-called red shift, still widely interpreted as indicating an expanding universe, is actually caused by decay in the frequency of light traveling through space. The cosmic radiation background is not a leftover indication of the big bang, it is light that has decayed to a lower frequency.
See for example the book Null Physics by Terence Witt.
As usual it will take "science" 50 years to widely accept the newest discoveries. Meanwhile most scientists will continue to add exceptions to ad hoc theories to try and escape the increasingly obvious.