Category: Science - Physics

The evolution of worlds from nebulae

1st. _Expansion._ It is supposed by the nebular hypothesis that the planets were all formed from rings of condensing vapor thrown off from a contracting sun which once filled space to, and beyond, Neptune’s distance. Let us imagine them again expanded to a like dimension, or e...

Chapters

1. CHAPTER I.

1st. _Expansion._ It is supposed by the nebular hypothesis that the planets were all formed from rings of condensing vapor thrown off from a contracting sun which once filled sp...

2. CHAPTER II.

1st. _Density._ The sun’s density is one-fourth that of earth, while Mercury’s is one-fifth greater than earth’s, showing that Mercury’s substance must be more than five times d...

3. CHAPTER III.

1st. If the sun was once so much greater that it reached out to Neptune,—as it must have done if Neptune was cast off from it,—would not its poles have flattened like those of E...

4. CHAPTER IV.

If all the stars that we now see in space were once fire-mist, there must have been another region equally large filled with some substance of a temperature 600° below zero, in...

5. CHAPTER V.

Were earth’s crust no thicker in comparison than the skin of an apple or peach, or 1/100 of its radius even, still man has never penetrated to one-twentieth of that depth; for I...

6. CHAPTER VI.

That the heat of the earth increases as we penetrate its surface has been learned from mining, tunneling, and the boring of wells. Yet on testing the wells they do not seem to s...

7. CHAPTER VII.

I conceive that one reason why scientists believe in the nebular hypothesis is because of their knowing that heat consumes. One cannot contemplate a burning object without perce...

8. CHAPTER VIII.

We are told by Prof. Ball that such is the translucency of nebulae one might think to be able to see through them the stars lying in the back-ground, were they in the right posi...

9. CHAPTER IX.

To understand how our powers are limited let us take the following illustrations. We see a horse of great fleetness, power, and intelligence, with a barn before him all his life...

10. CHAPTER X.

The theory of the formation of worlds from Nebulae is not only endorsed by Sir Robert Ball but he states his belief that the same theory is carried out upon earth in the formati...