Density Altitude: The altitude at which a given density is found in the standard atmosphere. Used in aviation, it is computed from the station pressure at takeoff and the virtual temperature at the particular altitude under consideration.

 

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Density Altitude: The altitude at which a given density is found in the standard atmosphere. Used in aviation, it is computed from the station pressure at takeoff and the virtual temperature at the particular . . . View Full Definition

Neutral Density: Is a technique which makes possible shorter printing times in color printing.

Magnetic Flux Density: The measurement of magnetic flux, in units of Gauss, inside the air gap in which a voice coil of a speaker operates.

Low Density Lipoprotein (LDL): A core of cholesterol surrounded by protein, often referred to as bad cholesterol.

Keyword Density: An old measure of search engine relevancy based on how prominent keywords appeared within the content of a page. Keyword density is no longer a valid measure of relevancy over a broad open s . . . View Full Definition

Neutral Density Filter: Describes a gray camera filter which has an equal opacity to all the colors of the spectrum and so does not affect the colors in the final image. It is used to reduce the amount of light ent . . . View Full Definition

Probability Density Function: The function that describes the change of certain realizations for a continuous random variable.

Pressure Altitude: The altitude in standard atmosphere at which a given pressure will be observed. It is the indicated altitude of a pressure altimeter at an altitude setting of 29.92 inches of mercury, and is . . . View Full Definition

Population Density: Number of individuals per unit area or volume

High-Density Lipoproteins (HDL): Known as High-Density Lipoproteins that has a function to remove cholesterol from the blood, carrying it to the liver. Often called good cholesterol.