index to the

Natural World category

animals

bats

birds

dogs

shetland ponies

chemical elements

glucinum, glucinium

constants

Avogadro constant

Boltzmann constant

Planck constant

Rydberg constant

earthquakes

earthquake intensity scales: Rossi-Forel, Mercalli, Modified Mercalli

earthquake magnitudes: Richter and other scales

some memorable earthquakes

radiation

infrared bands

ultraviolet bands

sedimentary particles

solar flare X-ray classes

sound

twilight

volcanoes

wind and storm

winds near the Earth's surface: speed records

Beaufort wind scales

Fujita or F Scale for wind speed

Enhanced Fujita or EF scale for wind speed in tornados

name lists for Atlantic tropical cyclones and hurricanes

name lists for Western North Pacific Tropical cyclones

name lists for Australia tropical cyclones

name lists for central north Pacific tropical cyclones

name lists of eastern north Pacific tropical cyclones

Northeastern Snowfall Impact Scale

Saffir-Simpson Damage Potential Scale for hurricanes

TORRO Hailstorm Intensity Scale

wind power classes