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ISSN: 2375-4389
Journal of Global Economics
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More on the 7 Year Economic Cycle and the Bell Normal Curves

Paul T E Cusack*

1641 Sandy Point Rd, Saint John, NB, Canada E2K 5E8, Canada

*Corresponding Author:
Cusack PTE
Independent Researcher, BSc E, DULE
1641 Sandy Point Rd, Saint John
NB, Canada E2K 5E8, Canada
Tel: (506) 214-3313
E-mail: [email protected]

Received Date: January 09, 2017; Accepted Date: January 24, 2017; Published Date: January 30, 2017

Citation: Cusack PTE (2017) More on the 7 Year Economic Cycle and the Bell Normal Curves. J Glob Econ 5: 231. doi: 10.4172/2375-4389.1000231

Copyright: © 2017 Cusack PTE. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Here is a paper on mathematical economics that provides a solution to the old question as to why the economy goes through a 7-year cycle. The answer lies in astrotheology mathematical physics. The Bell Normal Curve is used to explain this phenomenon. The viscous forces in the economy, whatever they may be, must be overcome by the inertial forces. Further study of these forces should be undertaken so that the negative impact of the cycle can be overcome.


Bell Normal Curve; Economic cycle; Savings rate; Astrotheology; Mathematics


It has been known for some time that the economy goes through a complete economic cycle approximately every 7 years. In a previous paper, I showed that the root cause for this phenomenon is demographics and the fertility of women. Having children necessitates spending. In this paper, we look at the and its equation, apply mathematics from Astrotheology Physics to try to understand why it takes 7 years to come to a resolution of a recession. The answer lies in the inertial forces overcoming the viscous forces as found in the Reynold’s number. We begin with the Bell Normal curves [1,2].

Bell Normal Curves


Figure 1: Bell Normal Curve showing the economic cycle.

The equation for the Bell Normal Curve is:

Φ=1/(2π) ∫e-t2/2

Take the derivative,

Φ’=1/(2π) e-t2/2

6=1/(2π) e-t2/2




2t=6.9282~7 years or 1 cycle

Re=Inertial Forces/Viscous forces

Re=ρv/=density * velocity/Poission’s ratio

We know from Astrotheology physcs that Re=0.403

Re=(0.127) (sin 1)/(0.27)


=1/ Period T

Since 1 rad=0.4 of a cycle, and Re=0.403,

=1/[(1/(2π) )(2π)]


The Viscous forces in the economy equal the inertial forces at the “boom“.

Reynold’s Number


Density=Mass/ Volume=ρ=0.126



v=a=0.8415=sin 1 rad.=sin t =~6σ/7 tears



=1/253=1/Period T=t

t=1 rad/ (2π)=0.4 of a cycle




So the energy in the economy, when the Re=1, or viscous overs inertial forces, is at t=6σ =7 years.

Savings Rate

Φ;=1/(2π) e-t2/2

7 years/6σ=360°

7/60°=1.167=1/(2π) e-t2/2


Lnn (7.33)=-t2/2


Ln 2=0.1353~Savings

Now the Savings=Investments, or S=I


1-S=0.8571=sin 59°


sin 61°=0.8746



sin 60°=0.866

1-sin 60°=0.134~0.1353 or 7.7 years

So, an economic cycle is about 7 years.

Φ’=6σ/7 years=1/(2π)e-t2/2




Ln (5.4984)=-t2/2


Now the cross product from Physics, and E=1/t

S=|E||t|sin t

=(1/2)(2)(sin 1 rad)=0.8415

=1-sin 1


e-t=0.1585 =1/(2π)=1 rad=t


So we see that the Bell Normal Curve adequately explains why the economy takes 7 years to complete one economic cycle. Admittedly, the economy is very complex and there are other factors that influence its duration.


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