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
Indeterminate equation Indeterminate equation An indeterminate equation, in mathematics, is an equation for which there is more than one solution; for example, 2"x" = "y" is a simple indeterminate equation, as are a"x" + b"y" = c and "x" = 1. Indeterminate equations cannot be solved uniquely. Prominent examples include the following: Univariate polynomial equation: which has multiple solutions for the variable "x" in the complex plane unless it can be rewritten in the form formula_2. Non-degenerate conic equation: where at least one of the given parameters "A", "B", and "C" is non-zero, and "x" and "y" are real variables. Pell's equation: