Metric

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A Metric is a unit of measurement.

  • Science is largely based on accurate systems of experimentation and measurement.
  • Sensors and scientific instruments rely on accurate metrics to quantify their readings and data.

Description (Specifications)

Metrics are the abstract, intangible idea-tools by which sophonts measure their environment and what they interact with. Almost every sophont species and world-state develops an indigenous system of measurement and then converts to the system used by the interstellar community when they join it. This leaves a field of many different systems of measurement coexisting, in which one system is used as the primary system of study and intellectual exchange. [1]

Scientific Metrics

Scientific metrics are employed to measure and quantify properties of the physical environment derived thru scientific observation and experimentation. Various physical properties will be assigned relative values according to associated standard metric scales by which they are quantified. Scale parameters can be modified for ease of manipulation and recording by the addition of a standardized prefix multiplier to the metric unit.

Distance & Velocity Metrics (Astronomic)

» The Imperial Standard Value of Lightspeed (c) is defined by convention as exactly 3.0 x 108 Imperial standard meters per second.
» The Imperial standard meter (m) is defined by convention as exactly one-300-millionth the distance light travels in one second.
» The Imperial Standard Astronomical Unit (AU) is defined by convention as:
»» Exactly 150,000,000 Imperial standard kilometers (km)
  • Light-velocity distances:
» The Old Terran Standard Parsec was based on orbital parallax distances and angular measures in the Sol system, and was standardized as a distance of 3.26 ly (≈ 3¼ ly).
» The Ancient Vilani Deshi was based on the separation between Vland and Tauri, yielding a distance of ≈ 2.17 ly (≈ 21/6 ly).
» The Imperial Standard Parsec (pc) includes: is defined by convention as:
»» The Imperial Standard Metric Parsec:
»»» Exactly 200,000 Imperial Standard AUs
»»» Exactly 500 light-seconds (ls)
»»» A distance of approximately 3.171 ly.
»» The Imperial Standard Angular Parsec:
»»» A distance of exactly pi (π) ly.
»»» A distance of approximately 3.142 ly (≈ 31/7 ly).

Distance Metrics (Planetary & Microscopic)

The Imperial standard meter (m) is defined by convention as exactly one-300-millionth the distance light travels in one second.

Energy & Power Metrics

Electroagnetism Metrics

Force & Stress & Pressure Metrics

  • Kilopond (kp) (kgf ) ===> (1.0 kp = 1.0 kg-force (1.0g) = 10.0 N = 1.0 daN (DN) "Decanewton")
»» 1.0 kp = 1.0 DN
  • Ton-force (tf ) ===> (1.0 tf (1.0g) = 1000 kgf = 10 kN)
»» 1.0 tf = 1.0 kDN

Gravitation Metrics

» Eotvos (E) = 0.1 μgal/m. (0.0001 μg0/meter)
» Roche Limit:
» Jumpspace Tensor Field Gradient: See Article @ Jumpspace

Mass Metrics

» Local Derivative Units

Temperature Metrics

Time Metrics

Volume Metrics

The Imperial standard liter (l or L) is defined by convention relative to the kilotiter (kl). The Imperial kiloliter is defined as exactly one cubic Imperial meter; thus, one Imperial Liter is exactly one-one-thousandth the volume of a cubic meter

History & Background (Dossier)

Modern Imperial Metrics are largely derived from an amalgamation of the ruling predecessor cultures that imposed their own systems during earlier Imperia. By far the most influential of these were the old Solomani systems known as the "Système International d'Unités" or "SI-Units" (or today as the Standard Imperial (SI) System of Units and Metrics) and it's associated decimalized unit measurement system known simply as the "Metric System" (the basis of the Imperial Standard Metric Prefix). In many cases, modern Imperial Metrics have been generalized by unfettering them from highly specified dependence upon conditíns in an originating star system by standardisation thru rounding and decimalization - a process known as metrication.

Old Vilani Metrics

Old Vilani metrics (or corrupted versions descended from them) are still sometimes found in limited use locally where Vilani cultural heritage remains strong.

Vilani Distances

The Vilani measured distances in

  • Shiig (~ "Inch") ≈ 34 mm
  • Amiran = 5 Shiig (≈ 170 mm)
  • Edapu = 5 Amiran (≈ 850 mm)
  • Khaniimi = 5 edapu, (≈ 4.25 meters)
  • Daakuu = 500 Khaniimi, (≈ 2.125 km.)
  • Deshi ("Vilani Parsec") ≈ 2.17 ly

The Rule of Man

The Rule of Man succeeded in instituting many Terran metrics that replaced many of the earlier Vilani metrics. Some of the Vilani metrics survive in Vilani Space and as elements of folk sayings.[2]

Socioeconomic Metrics

In contrast to mostly tangible scientific metrics, socioeconomic metrics measure social and economic relationships.

Economic Metrics

Social Metrics

Universal Codes:

References & Contributors (Sources)

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Mongoose Publishing or by permission of the author. The page history lists all of the contributions.
  1. ↑ Information provided to the library by Maksim-Smelchak
  2. ↑ Information provided to the library by Maksim-Smelchak
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