View source for Bully Metric Length Apan

[[File:Observable_universe_logarithmic_illustration.png|thumb|300px|Artist's logarithmic scale conception of the observable universe. The radius of the observable universe is estimated to be 48.04 ronnapan (Rla)]]

The length apan is by definition the distance light travels in vacuum in 30.55 pico-seconds.  SI prefixes have the same meaning and conventions when used with Bully lengths as they have when used with standard SI units. However, the word "length" may be dropped when the context is clear.  For example, "An American football field is ten kilo length apan (10 kla) between the goal lines", can be shortened to "An American football field is ten kilopan (10 ka) between the goal lines".  See Table 1 below for the list of SI prefixes used with Bully lengths.  Shown in the table are the smallest meaningful length (Planck length), largest meaningful length (Visible Universe radius), and a few other length values for comparison.

[[File:Football field diagram.webp|thumb|400px|Diagram of a modern American football field.  The kilopan (kilo length apan) is approximately 10 yards.  An American football field is 100 yards, or 10 kilopan, between the goal lines.  There are end zones extending past the goal lines another 10 yards, or 1 kilopan.]]

[[File:Vitruvian_Distance.png|thumb|400px|Diagram of a modern American football field.  The kilopan (kilo length apan) is approximately 10 yards.  An American football field is 100 yards, or 10 kilopan, between the goal lines.  There are end zones extending another 10 yards, or 1 kilopan, past the goal lines.]]

{| class="wikitable" style="padding: 0; text-align: center; width: 0; white-space: nowrap;"
|+Table 3: The length prefix table
|-
! colspan=3| Prefix
! colspan=3| Spacetime Symbols
|-
! Name !! Symbol !!  Base 10 !! Length
|-
| quetta || Q || 10<sup>30</sup> || Qla 
|-
! colspan=3| Visible Universe Radius || <math>48.04 \, Rla</math>
|-
| ronna || R || 10<sup>27</sup> || Rla 
|-
| yotta || Y || 10<sup>24</sup> || Yla 
|-
| zetta || Z || 10<sup>21</sup> || Zla 
|-
| exa || E || 10<sup>18</sup> || Ela 
|-
| peta || P || 10<sup>15</sup> || Pla 
|-
! colspan=3| Earth-Sun Distance || <math>16.33 \, Tla</math>
|-
| tera || T || 10<sup>12</sup> || Tla 
|-
| giga || G || 10<sup>9</sup> || Gla 
|-
| mega || M || 10<sup>6</sup> || Mla 
|-
! colspan=3| American Football Field Length || <math>10 \, kla</math>
|-
| kilo || k || 10<sup>3</sup> || kla 
|-
| — || — || 10<sup>0</sup> || la 
|-
| milli || m || 10<sup>−3</sup> || mla 
|-
| micro || μ || 10<sup>−6</sup> || μla 
|-
| nano || n || 10<sup>−9</sup> || nla 
|-
| pico || p || 10<sup>−12</sup> || pla 
|-
| femto || f || 10<sup>−15</sup> || fla 
|-
| atto || a || 10<sup>−18</sup> || ala 
|-
| zepto || z || 10<sup>−21</sup> || zla 
|-
| yocto || y || 10<sup>−24</sup> || yla 
|-
| ronto || r || 10<sup>−27</sup> || rla 
|-
| quecto || q || 10<sup>−30</sup> || qla 
|-
! colspan=3| Minimum value <br />(Planck Length) || <math>\frac{qla}{566.66}</math> 
|}