Is this Pyramid of Giza focusing electromagnetic energy article BS?

[GrandMasterK]

https://phys.org/news/2018-07-reveals-great-pyramid-giza-focus.html?fbclid=IwAR0NqMZGJadrI9ygXaTiMPM8X9r75exyo-1fEbDr9VZp_fTHx1zZsxpK9Co

Some loose internet research portrays phys.org as a credible site. There are some names and organizations listed near the bottom. But it reads like it was written by a middle-schooler and the nature of the article has borderline conspiracy tones to it. Pyramids and energy and what not. I dunno. Anyone have any input?

[beecee]

the paper:

https://aip.scitation.org/doi/10.1063/1.5026556

Electromagnetic properties of the Great Pyramid: First multipole resonances and energy concentration

ABSTRACT

Resonant response of the Great Pyramid interacting with external electromagnetic waves of the radio frequency range (the wavelength range is 200–600 m) is theoretically investigated. With the help of numerical simulations and multipole decomposition, it is found that spectra of the extinction and scattering cross sections include resonant features associated with excitation of the Pyramid's electromagnetic dipole and quadrupole moments. Electromagnetic field distributions inside the Pyramid at the resonant conditions are demonstrated and discussed for two cases, when the Pyramid is located in a homogeneous space or on a substrate. It is revealed that the Pyramid's chambers can collect and concentrate electromagnetic energy for the both surrounding conditions. In the case of the Pyramid on the substrate, at the shorter wavelengths, the electromagnetic energy accumulates in the chambers providing local spectral maxima for electric and magnetic fields. It is shown that basically the Pyramid scatters the electromagnetic waves and focuses them into the substrate region. The spectral dependence of the focusing effect is discussed.

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I get many scientific articles from there, and I believe it is reasonably reputable. Although at times, what the research/findings and data from the scientists at the coal face find, can be sensationalised at times by the journalists writing the articles for publication. Which is why I mostly include the paper/s if available.

On this particular scenario, at first impression I might have said BS, but on reading the paper, it may just be some process due to natural causes and such. Someone more learned then I may like to comment.

[swansont]

Stone has an index of refraction, so you can get some lensing and perhaps waveguide behavior, at the appropriate wavelength. 

[GrandMasterK]

thanks guys!