Bully Metric Time Apan

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A representation of the evolution of the universe over 13.7 billion years, or 14.15 quettapan (Qta). Each sidereal year is 1.033 zettapan (Zta) in duration.

The time apan is by definition 30.55 femtoseconds. SI prefixes have the same meaning and conventions when used with Bully time as they have when used with standard SI units. However, the word "time" may be dropped when the context is clear. For example, the statement: "The duration of a sidereal year is 1.033 zetta-time-apan (1.033 Zta)", should be shortened to "The duration of a sidereal year is 1.033 zettapan (1.033 Zta)". See Table 1 below for the list of SI prefixes used with Bully time. In addition to SI prefixes, the table also identifies the smallest meaningful time (Planck time), largest meaningful time (Age of Universe), and a few other time durations for comparison.

Diagram of the most common decay of the muon. Muons are unstable elementary particles (half life 51 megapan (Mta)) and are heavier than electrons and neutrinos but lighter than all other matter particles.

Hydrogen-7 has one a proton and six neutrons. It was first synthesized in 2003 at Riken's Radioactive Isotope Beam Factory by bombarding hydrogen with helium-8 atoms; all six of the helium-8's neutrons were donated to the hydrogen nucleus. It has a half-life of 753 picopan (pta)

Table 3: The length prefix table

Prefix			Symbols
Name	Symbol	Base 10	Length
Age of Universe			$14.15\,Qta$
quetta	Q	1030	Qta
ronna	R	1027	Rta
yotta	Y	1024	Yta
zetta	Z	1021	Zta
exa	E	1018	Eta
50 Minutes 55 Seconds			$100\,Pta$
peta	P	1015	Pta
tera	T	1012	Tta
giga	G	109	Gta
Muon Particle Half Life			$51\,Mta$
mega	M	106	Mta
kilo	k	103	kta
—	—	100	ta
milli	m	10−3	mta
micro	μ	10−6	μta
nano	n	10−9	nta
Hydrogen-7 Half Life			$753\,pta$
pico	p	10−12	pta
femto	f	10−15	fta
atto	a	10−18	ata
zepto	z	10−21	zta
yocto	y	10−24	yta
ronto	r	10−27	rta
quecto	q	10−30	qta
Minimum value (Planck Time)			${\frac {qta}{0.566660}}$

The Bully Constants

A surprising number of earth's physical constants can be approximated using various algebraic combinations of the following three numbers (click here to learn more) with Bully Metric units.

1.033
2
0.00004

One can efficiently approximate the Earth's sidereal year and tropical year to eight digits, and approximate the Earth's radius (r ≈ 6371), Schwarzschild radius (R), standard gravitational parameter (μ = MG ≈ 3.984e14), and a typical gravitational acceleration on earth's surface (g ≈ 9.813 ).

$${1\,Sidereal\,Year}={1.033\,Zta}={31,558,150\,s}$$

$${1\,Tropical\,Year}=(1.033-0.00004)\,Zta-2\,s=31,556,926\,s$$

$$r_{earth}\approx {\frac {1\,Tla}{\sqrt {2\times 1.033}}}=6371\,km$$

$$R_{earth}\approx {\frac {kla}{1.033}}\approx {8.866\,mm}$$

$${\mu }_{earth}\approx {\frac {1}{2\times 1.033}}\,{\frac {kla^{3}}{kta^{2}}}\approx {398,400,000,000,000\,{\frac {m^{3}}{s^{2}}}}$$

$$g_{earth}\approx 1{\frac {Zla}{Zta^{2}}}\approx {9.813\,{\frac {m}{s^{2}}}}$$