Brus equation emission energy Δ"E" = "hc"/λ, where c is the speed of light). This is useful for calculating the radius of a quantum dot from experimentally determined parameters. The overall equation is "E", "m"*, and "m"* are unique for each nanocrystal composition. For example, with CdSe nanocrystals: Brus equation The Brus equation can be used to describe the emission energy of quantum dot semiconductor nanocrystals (such as CdSe nanocrystals) in terms of the band gap energy "E", Planck's constant "h", the radius of the quantum dot "r", as well as the effective mass of the excited electron "m"* and of the
Represent (song) Represent (song) "Represent" is the ninth song on Nas' debut album "Illmatic". It is produced by DJ Premier who samples Lee Irwin's "Thief of Baghdad" for the song's beat. The song's minimalistic beat consists of an electric piano sample and bells. Nas raps three verses and performs a spoken dedication to his friends at the track's end, but does not contribute to the chorus. Nas' verses deal with his life in the streets and his criminal ties. One specific lyric was "pulling the Tec out the dresser" was criticized by Jay-Z on his diss song "Takeover." Nas dedicates the song