Chord names and symbols (popular music)

src: upload.wikimedia.org Musicians use various kinds of chord names and symbols in different contexts, to represent musical chords. In mos...

Triquetra

src: i.ytimg.com Triquetra ( ; Latin tri- "three" and quetrus "cornered") originally meant "triangle" and w...

Dd (Unix)

src: i.ytimg.com dd is a command-line utility for Unix and Unix-like operating systems whose primary purpose is to convert and copy files. ...

Sacraments of the Catholic Church

src: image.shutterstock.com There are seven sacraments of the Catholic Church , which according to Catholic theology were instituted by Jesu...