G MAJOR FINGERING
right and left · one octave and two · one sharp · F sharp
THE KEYBOARD
three octaves · every key and its note on the staff
THE SOPRANO RECORDER
all 27 notes from C5 to D7 in the Baroque and German systems — and how to tell which one you hold
SNARE DRUM RUDIMENTS
the forty international rudiments of the PAS · four families · the Standard 26 marked
THE TEN CLOUD GENERA
three levels of the troposphere to one scale, and the ten genera that live in them
THE VERTICAL PLANET
from the Challenger Deep to the summit of Everest · one scale, nothing compressed
TN, VA, IPS AND OLED
what differs inside the cell · and a paper describing each mode
THE FUJITA SCALE
six categories of tornado damage — and the two different winds assigned to them
GREEK LETTERS IN SCIENCE
10 capitals with a shape of their own, 14 twins of Latin letters, and what each one stands for
THE MOHS HARDNESS SCALE
ten reference minerals and five household probes: who scratches whom
THE PERIODIC TABLE
all 118 elements: symbol, atomic number and IUPAC atomic weight in every cell — blocks in colour, lanthanoids and actinoids offset below
THE ELECTROMAGNETIC SPECTRUM
eighteen decades of frequency · and how much of it the eye sees