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) States for the third most number one albums for a female artist, behind Janet Jackson with seven, Madonna with eight and Barbra Streisand's nine chart toppers. In its second week, the album remained at number one on the albums chart, with 182,000 copies sold. "E=MC²" became Carey's first album to spend two straight weeks at number one since 1995's "Daydream", although "The Emancipation of Mimi" (2005) spent two non-consecutive weeks at the top spot. On "Billboard"s Top R&B/Hip-Hop Albums chart, "E=MC²" debuted at number one, and spent forty-seven weeks fluctuating within the top 100. The album was certified Platinum by