Cosmic field strength

Cosmic field strength inside the sphere

Cosmic field strength outside the sphere

When cosmic radius become critical value, cosmic field strength is zero everywhere inside the sphere, that is line segment OA in Fig. 1; Outside the sphere, the magnitude of repulsive field strength is line AB

When cosmic radius is expanded to a₁, the gravitational field strength inside the sphere is line segment OA₁ and outside the sphere is curve A₁C ; the repulsive field strength is line OB inside or outside the sphere.

We get the following conclusion from the feature of cosmic field strength:

1) the repulsion expansion began with outmost layer and extends into inner. Hence Hubble’s constant of outmost layer is a little larger than inner. Certainly, if the travel velocity of light have to be considered, their difference is still less

2) Following the expansion increase, cosmic field strength inside and outside the sphere tend to the same change (for example a > 3 ). This is the cause that cosmic boundary is not quite distinct now of.

Fig.3