All of Simetrium on one page

The Simetrium index: every unit and quantity by discipline and alphabetically, with search by name and symbol. At the entrance, a lab: a cabbage indicator, a coloured flame, supercooled water and a gear train.

The SI system

the units everything else rests on

SI base units

SI derived units

SI units (submultiples and multiples)

Non-SI units accepted for use with the SI

Non-SI units

Time and calendar

Temperature scales

Old and forgotten measures

arshins, talents, statvolts and caloric

Anglo-American measures

CGS and forgotten systems

History of electrical engineering

History of science

Physics and chemistry

from the barn to the degree Brix

Nuclear physics and dosimetry

Chemistry

Optics

Thermophysics

Mechanics

Rheology and viscosity

Hydrometry and food scales

Earth and sky

rocks, rivers, weather and orbits

Oceanology

Meteorology

Astronomy and spaceflight

Navigation and aviation

Engineering and industry

machines, materials, electricity and energy

Materials science

Electrical engineering

Electronics and measurement

Batteries

Power engineering

Communication, sound and image

bits, signals, decibels and frames

Computing

Data networks

Radio engineering and radio communication

Sound recording and broadcasting

Music

Life and health

medicine, nutrition and food additives

Medicine

Sports nutrition

Nutrition

Food additives

Money and value

finance, gems and working time

Jewellery and gemmology

Labour economics