Like the natural numbers, Z is closed under the operations of addition and multiplication, that is, the sum and product of any two integers is an integer. However, with the inclusion of the negative n ...
mpedance is represented as a complex quantity \scriptstyle Z and the term complex impedance may be used interchangeably; the polar form conveniently captures both magnitude and phase characteristics,\ ...
The periodic table and a natural number for each element Russian chemist Dmitri Mendeleev created a periodic table of the elements that ordered them numerically by atomic weight, yet occasionally used ...
In mathematics, ordinate most often refers to that element of an ordered pair which is plotted on the vertical axis of a two-dimensional Cartesian coordinate system, as opposed to the abscissa. The te ...
Yotta is the largest unit prefix in the International System of Units (SI), denoting a factor of 1024 or 1000000000000000000000000. It has the unit symbol Y. The prefix name is derived from the Greek ...
In a somewhat obsolete variant usage, the abscissa of a point may also refer to any number that describes the point's location along some path, e.g. the parameter of a parametric equation. Used in thi ...
A random variable X\colon \Omega \to E is a measurable function from the set of possible outcomes \Omega to some set E. Usually, E = \mathbb{R} or \mathbb{R}^n, otherwise the term random element is us ...
The Wiener process Wt is characterized by three properties:W0 = 0The function t → Wt is almost surely everywhere continuousWt has independent increments with Wt?Ws ~ N(0, t?s) (for 0 ≤ s t), wher ...
The work function W for a given surface is defined by the differenceW = -e\phi - E_{\rm F}, where ?e is the charge of an electron, ? is the electrostatic potential in the vacuum nearby the surface, ...
When an object's velocity is held constant at one meter per second against constant opposing force of one newton the rate at which work is done is 1 watt.\mathrm{W = \frac{J}{s} = \frac{N\cdot m}{s} = ...
The Lambert W-function is named after Johann Heinrich Lambert. The main branch W0 is denoted by Wp in the Digital Library of Mathematical Functions and the branch W?1 is denoted by Wm there.The notat ...
Given two points in the space, called A and B, voltage is the difference of electric potentials between those two points. From the definition of electric potential it follows that:\Delta V_{BA} = V_B ...
One volt is defined as the difference in electric potential between two points of a conducting wire when an electric current of one ampere dissipates one watt of power between those points. It is also ...
For any unitary matrix U, the following hold:Given two complex vectors x and y, multiplication by U preserves their inner product; that is,\langle Ux, Uy \rangle = \langle x, y \rangle.U is normalU is ...
While tritium has several different experimentally determined values of its half-life, the National Institute of Standards and Technology lists 4,500 ± 8 days (12.32 ± 0.02 years). It decays into he ...
