A world of information

Different types of knots

Cloud classification

The solar system

Anatomy of type

The human skeleton

Spelling, Morse, and semaphore alphabets

Atomic structure

The golden ratio & the Fibonacci sequence

Music notation

The anatomy of a bicycle

The structure & atmosphere of planet Earth

Greek alphabet

Screws & nails

Impossible shapes

Time zones & tectonic plates

The human eye

Ship's watch schedule & international code of signals

Flight

Solstices and equinoxes

Rivers

Periodic table of the elements

Pencils & brushes for the artist and designer

The phases of the moon

Organs of the body

Regular polygons

The layout of an orchestra

Neap & spring tides

Roman numerals

The MOHS scale of mineral hardness

International Organization for Standardization paper sizes.