Class

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.

The feeling or mood created by a design.

A prediction model used in human-computer interaction. It states that the time required to move to a target area rapidly increases as the distance to the target increases. The law was proposed by Paul Fitts, an American psychologist, in 1954 as a mathematical model of movement with limited cognitive capacity.

Fitts hypothesized that one would quickly select its first apparent target when reaching for an object before considering alternatives — a phenomenon called "target fixation." This tendency would increase progressively with increased distance between the subject and object until it eventually became exponential (i.e., too far away).

The sum of all experiences an individual has with a company or its delivery channels during their journey. From handling and registering a complaint to ordering new products, these interactions are monitored and analyzed at every touchpoint by frontline employees, developers, designers, and product managers for improvement opportunities.

A specific set of colours, usually with a limited number of values, chosen to suit the needs of a particular design.

The art of drawing original characters and symbols — especially for decorative purposes.

The art of decorative writing practised by many different people in many different cultures. Calligraphy is sometimes used to add a personal touch to wedding invitations, special event invitations, and other projects.

A process in which subjects use a product or service under test conditions and report their experience.

Black, white, and all the values of shades in between.

A language used to create web pages, and it stands for Hypertext Markup Language.