metric

Examples of metric in the following topics:

• The Relativistic Universe

  • Gravity is a geometrical effect in which a metric matrix plays a special role, and the motion of objects are altered by curved space.
  • A matrix that goes in between two vectors to give a length is called a metric.
  • In mathematics, a metric or distance function is a function which defines a distance between elements of a set.
  • A space-time with the $\eta$ metric is called Minkowski space and $\eta$ is the Minkowski metric.
  • An arbitrary metric matrix can be denoted as $g$, raising questions as to what space-times with different metrics represent.

• Prefixes and Other Systems of Units

  • A metric prefix, or SI prefix, is a unit prefix that precedes a basic unit of measure to indicate a multiple or fraction of the unit.
  • Prefixes in varying multiples of 10 are a feature of all forms of the metric system, with many dating back to the system's introduction in the 1790s.
  • The SI Unit system, or the metric system, is used by the majority of countries in the world, and is the standard system agreed upon by scientists and mathematicians.

• Converting Units

  • EASY Unit Conversion in the Metric System - This simple extra help video tutorial explains the metric system and how to make simple metric conversions.

• Length

• Time

• Mass

• Nuclear Fusion

  • In its core, the sun fuses 620 million metric tons of hydrogen each second.

• Radiation from Food

  • Food irradiation is currently permitted by over 50 countries, and the volume of food treated is estimated to exceed 500,000 metric tons annually worldwide.

• Length

  • The metric length of one kilometre is equivalent to the imperial measurement of 0.62137 miles.

• Four-Vectors

  • This tensor $\eta_{\mu\nu}$ defines the metric for flat spacetime.
  • It is called the metric because you need it to convert various four vectors (and other objects tensors) into scalars that we can measure.