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
E=MC² (Mariah Carey album) (BPI), denoting shipments of 100,000 copies. In Japan, the album peaked at number seven on the Oricon Overall Chart, and was certified Gold by the Recording Industry Association of Japan (RIAJ) for shipments of 100,000 copies. After only eight days of release, "E=MC²" was certified Gold in the Philippines, denoting shipments of 15,000 units. The album was the 26th best-selling album worldwide in 2008, according to International Federation of the Phonographic Industry (IFPI). As of September 19, 2009, the album has sold 2.5 million copies worldwide. Credits for "E=MC²" adapted from the album's liner notes. !scope="row"|Worldwide E=MC² (Mariah Carey album)