Any corporeal perception associated with a sense of pressure, hearing or touch is called a somatic sensation. Somatic sensations are described using words like hard, soft, loud, quiet, slap, tickle, push, pull, scream, whisper, port, starboard, bass, treble and so on. The reference experience for describing somatic sensation is hearing a heartbeat. So to make a binary description of a somatic sensation, compare it to hearing a human heartbeat. Report the result using one of the following algebraic statements. If the two experiences are not comparable, then express this by writing . If the sensation is like hearing a heartbeat, then say that it is on the *left*. Express this as . If the sensation is not like hearing a heartbeat, then say that it is on the *right* and that . The number is called the **oddness**. These relations are mathematically expressed by

## Reference Constant for Oddness

The numerical constant associated with hearing a heartbeat is called the **time units conversion factor**. It is symbolized by . This number comes to us from the Sumerian and Babylonian peoples of ancient Mesopotamia.^{1}George Sarton, *A History of Science*, page74. Harvard University Press, Cambridge 1952. About four thousand years ago their astronomical observations and sexagesimal mathematics established what we mean by a **second**. Namely that one day is parsed as twenty-four hours of sixty minutes, each of sixty seconds. And so, by ancient convention (seconds per day). For more detail about how this number is used, please see the discussion of frequency.

1 | George Sarton, A History of Science, page74. Harvard University Press, Cambridge 1952. |
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