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2. List of physical quantities - Wikipedia

   en.wikipedia.org/wiki/List_of_physical_quantities

   Measure for how the magnetization of material is affected by the application of an external magnetic field H/m L M T −2 I −2: intensive Permittivity: ε s: Measure for how the polarization of a material is affected by the application of an external electric field F/m L −3 M −1 T 4 I 2: intensive Plane angle: θ: Ratio of circular arc ...

3. Mineral resource classification - Wikipedia

   en.wikipedia.org/wiki/Mineral_resource...

   Mineral Resources are further sub-divided, in order of increasing geological confidence, into inferred, indicated and measured as categories. Inferred Mineral Resource is the part of a mineral resource for which quantity, grade (or quality) and mineral content can be estimated with a low level of confidence. It is inferred from geological ...

4. Physical quantity - Wikipedia

   en.wikipedia.org/wiki/Physical_quantity

   Ampèremetre (Ammeter) A physical quantity (or simply quantity) [1] [a] is a property of a material or system that can be quantified by measurement.A physical quantity can be expressed as a value, which is the algebraic multiplication of a numerical value and a unit of measurement.

5. Dimensional analysis - Wikipedia

   en.wikipedia.org/wiki/Dimensional_analysis

   A quantity equation, also sometimes called a complete equation, is an equation that remains valid independently of the unit of measurement used when expressing the physical quantities. [ 28 ] In contrast, in a numerical-value equation , just the numerical values of the quantities occur, without units.

6. Length measurement - Wikipedia

   en.wikipedia.org/wiki/Length_measurement

   The basic idea behind a transit-time measurement of length is to send a signal from one end of the length to be measured to the other, and back again. The time for the round trip is the transit time Δt, and the length ℓ is then 2ℓ = Δt*"v", with v the speed of propagation of the signal, assuming that is the same in both directions.

7. Tape correction (surveying) - Wikipedia

   en.wikipedia.org/wiki/Tape_correction_(surveying)

   C L is the corrected length of the line to be measured or laid out; M L is the measured length or length to be laid out; N L is the nominal length of the tape as specified by its mark; K L is a known length; Corr is the ratio of measured to actual length , determined by measuring a known length.