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2. List of physical constants - Wikipedia

   en.wikipedia.org/wiki/List_of_physical_constants

   The constants listed here are known values of physical constants expressed in SI units; that is, physical quantities that are generally believed to be universal in nature and thus are independent of the unit system in which they are measured. Many of these are redundant, in the sense that they obey a known relationship with other physical ...

3. List of physical quantities - Wikipedia

   en.wikipedia.org/wiki/List_of_physical_quantities

   siemens (S = Ω −1) L −2 M −1 T 3 I 2: scalar Electrical conductivity: σ: Measure of a material's ability to conduct an electric current S/m L −3 M −1 T 3 I 2: scalar Electric potential: φ: Energy required to move a unit charge through an electric field from a reference point volt (V = J/C) L 2 M T −3 I −1: extensive, scalar ...

4. Outline of physical science - Wikipedia

   en.wikipedia.org/wiki/Outline_of_physical_science

   Validity, accuracy, and social mechanisms ensuring quality control, such as peer review and repeatability of findings, are amongst the criteria and methods used for this purpose. Natural science can be broken into two main branches: life science (for example biology) and physical science. Each of these branches, and all of their sub-branches ...

5. Outline of science - Wikipedia

   en.wikipedia.org/wiki/Outline_of_science

   The following outline is provided as a topical overview of science; the discipline of science is defined as both the systematic effort of acquiring knowledge through observation, experimentation and reasoning, and the body of knowledge thus acquired, the word "science" derives from the Latin word scientia meaning knowledge. A practitioner of ...

6. Mass - Wikipedia

   en.wikipedia.org/wiki/Mass

   Figure 1 of Cavendish's paper. Measuring gravitational mass in terms of traditional mass units is simple in principle, but extremely difficult in practice. According to Newton's theory, all objects produce gravitational fields and it is theoretically possible to collect an immense number of small objects and form them into an enormous ...

7. Outline of physics - Wikipedia

   en.wikipedia.org/wiki/Outline_of_physics

   Physics – natural science that involves the study of matter [1] and its motion through spacetime, along with related concepts such as energy and force. [2] More broadly, it is the general analysis of nature, conducted in order to understand how the universe behaves. [3] [4] [5]