Cherenkov radiation permeability and formula_16 is the index of refraction of the material the charge particle moves through. Unlike fluorescence or emission spectra that have characteristic spectral peaks, Cherenkov radiation is continuous. Around the visible spectrum, the relative intensity per unit frequency is approximately proportional to the frequency. That is, higher frequencies (shorter wavelengths) are more intense in Cherenkov radiation. This is why visible Cherenkov radiation is observed to be brilliant blue. In fact, most Cherenkov radiation is in the ultraviolet spectrum—it is only with sufficiently accelerated charges that it even becomes visible; the sensitivity of the human eye peaks at green,
The Sound of a Voice The Sound of a Voice The Sound of a Voice is a 1983 play by American playwright David Henry Hwang. Hwang's fifth play, it is an original ghost story inspired by Japanese folk stories, films, and Noh theater. The play was first produced as part of the production "Sound and Beauty" on November 6, 1983 Off-Broadway at the Joseph Papp Public Theater. It was directed by and featured John Lone. Composer Philip Glass and Hwang adapted it for the opera "The Sound of a Voice" in 2003. That same year, Susan Hoffman directed a film adaptation entitled "Sound of a