Y meaning in Computing ?

Answer: What is Luminosity mean?

Luminosity is an absolute measure of radiated electromagnetic power (light), the radiant power emitted by a light-emitting object over time. In astronomy, luminosity is the total amount of electromagnetic energy emitted per unit of time by a star, galaxy, or other astronomical object.

In SI units, luminosity is measured in joules per second, or watts. In astronomy, values for luminosity are often given in the terms of the luminosity of the Sun, L⊙. Luminosity can also be given in terms of the astronomical magnitude system: the absolute bolometric magnitude (Mbol) of an object is a logarithmic measure of its total energy emission rate, while absolute magnitude is a logarithmic measure of the luminosity within some specific wavelength range or filter band.

In contrast, the term brightness in astronomy is generally used to refer to an object's apparent brightness: that is, how bright an object appears to an observer. Apparent brightness depends on both the luminosity of the object and the distance between the object and observer, and also on any absorption of light along the path from object to observer. Apparent magnitude is a logarithmic measure of apparent brightness. The distance determined by luminosity measures can be somewhat ambiguous, and is thus sometimes called the luminosity distance.

reference

Full Form	Category
Young's Modulus of elasticity	Academic & Science
Alleghany Corporation of Delaware	Business
Yttrium	Chemistry
Youth	Community
Ymca	Community
Yelling	Community
Youthful	Community
Contrast (gamma)	Community
Vertical Axis (plotter Y-axis)	Computer Hardware
Admittance	Computing
Luminance Component	Computing
Luminosity	Computing
Yocto	Computing
Yacc Grammar File	File Type
Yield	General
Yards	General
YELIYUR	Indian Railway Station
Y-axis (vertical Axis)	Maths
Years	Measurement Unit
Year or years	Medical
Why??	Messaging
Search and Rescue Unit Error	Military and Defence
Out-of-plane Position - Vertical	Physics Related
Vertical Axis	Physics Related
Width of Vehicle Or Structure - Horizontal Axis	Space Science
Yaw	Space Science
Y-axis	Space Science
Yukon Standard Time [utc - 0900]	Time