Named things have unique values {nominal level} {level of measurement} {measurement level} {absolute, measurement}. Name and value have one-to-one correspondence. Origin and units do not matter.
Different named things have value differences {interval level}. Affine linear transformations, such as t(m) = c * m + d, where m is value and c and d are constants, maintain differences.
For many named things, values have positions {ordinal level} in order. Monotone increasing transformations maintain order.
Values have ratios {ratio level} {log-interval level}. Power transformations, such as t(m) = c * m^d, where m is value and c and d are constants, maintain ratios. Linear transformations maintain ratio relations.
Physical Sciences>Physics>Quantum Mechanics>Wavefunction>Collapse>Measurement
5-Physics-Quantum Mechanics-Wavefunction-Collapse-Measurement
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Date Modified: 2022.0224