Length


Read here about a physical property that can be measured and depicted in a scalometer.

Overview

Length is a measure of space.

Sample Scalometer of Length

The scalometer below was one of the first I rendered and has many features left out of later attempts. It shows
  • A dial with the powers of ten featured in black
  • A dial with blank places shown with a dotted line
  • The horizon of untunability is marked with a star
  • The zone of attention is shown by a gap in the circle around the head cartoon in the center
  • The size of our biological receptors is marked by small icons and dashed indicators.
Scalometer_Meters_of_Distance_(c)_2011_Lionel_Wolberger.png

Units of length

Length is a critical physical property, and from it is derived area and volume. It also contributes to time-derived units of velocity and acceleration, see motion.

Length

The SI unit of length is the meter (m).

Area

The SI unit of area is the meter to the second power, known as the square meter (m^2). (The word "square" is deprecated in scale studies, since although the square is a geometrical figure associated with second power laws, there are many others including triangles.)

Volume

The SI unit of volume is the meter to the third power, known as the cubic meter (m^3). (The word "cube" is deprecated in scale studies, since although the cube is a geometrical figure associated with third power laws, there are many other such figures including tetrahedra and closest-packed spheres.)

Operational Issues of Length


Bridgman chose the measurement of length as the examplar of his operational definition of scientific meaning. See Bridgman on Length for the full text.