The intensity of a color relative to its own brightness. Colours are said to be saturated when they have a strong hue and high intensity.
The measure of how easily light passes through a material. It is a quantitative characteristic that can be represented as a number within the range of [0, 1], and in some cases [0%,100%], with lower numbers indicating higher transparency.
A process in which subjects use a product or service under test conditions and report their experience.
A system of columns and rows designers use to create layouts. It's used in graphic design and web development to align elements for easy use on the page. Grids are a key part of design because they help you create balance, rhythm, proportion and hierarchy in your layout.
The adjustment of all characters in a line by moving them closer together or farther apart.
Also called a paragraph mark, a paragraph sign or section marker, is a typographical character for separating paragraphs. It looks like a "ΒΆ".
The distance between two points of extrusion or an object. It can also be defined as the measurement of size.
The number of visits that result in a purchase or some other goal. It can measure any conversion event, such as download, registration, purchase, etc.
A non-functional first draft of a design.
An imaginary line on which most letters "sit". As such, it equals the height of an em square. The expected result of a baseline is to reference the height with which text is aligned. The alignment ranges from ascenders, which are the upper strokes in b, d, and h, down to descenders like j or y.
An example of a typical user and the actions they take. Typically these are written in the form of a story.