IN conjunction with Mr. W. H. McVicker, we have begun an investigation of the spectra emitted by the vapours of compounds when subjected to waves from a Tesla transformer passing between two glass ...

Although sunlight appears to be a full continuous spectrum when viewed with a spectroscope, more detailed observation shows black narrow lines. These 'Fraunhofer' lines are due to the absorption ...

To solve this problem, a Fraunhofer research team from Fraunhofer ... leads to a resonance wavelength shift in the ...

and that spectra can be customised for specific requirements such as driving waveguides or for holographic elements. But not all is plain sailing. “New challenges have emerged,” according to the ...

Germany's Fraunhofer Institute for Solar Energy Systems ... “This value measured under the terrestrial AM1.5g spectrum sets a new world record and demonstrates the potential of silicon-based ...