Electric                    Astral               Pre-historical
Universe              Catastrophism        Reconstruction


     Mikamar
           Publishing
 

Articles & Products Supporting the Pre-historical Reconstruction and Plasma Cosmology
 home       features       science/philosophy       wholesale store       used books        contact

Site Section Links

Introduction Material
Articles
The Third Story
Features

Cosmology, Origins
The Nature of Time
Nature of Time video
The Nature of Space
The Neutrino Aether
Nature of Force Fields
Relativity Theory

Geophysical Material
Origin of Modern Geology
Niagara Falls Issues
Climate Change Model
Climate Change Questions

Philosophy Material
Philosophy Links

Reconstruction &
Mythology Material
Modern Mythology Material
Language/Symbol Development
1994 Velikovsky Symposium
Horus Journals TOC
Kronos Journals TOC
Pensee Journals TOC
Velikovskian Journals TOC
Selected Velikovskian Article

Miscellaneous Material
Modern Mythology
State of Religious Diversity
PDF Download Files
Open letter to science editors

 

KRONOS Vol IV, No. 4

A NOTE ON THE TEMPERATURE OF VENUS

C. J. RANSOM

The special issue of KRONOS - Velikovsky and Establishment Science - cites (p. 132) a calculation of mine relating to the temperature of Venus. This calculation should be put in context with the temperature debate, so that its result is neither misconstrued nor used as a real value.

Astronomer W. C. Straka wrote in 1972 that if Venus were incandescent (say, 2000K) only 3500 years ago, then it would now be much hotter than the measured temperature. Later, Sagan wrote that, if Venus were 6000K about 3500 years ago, its temperature today would be lower than the freezing point on Earth. Obviously, both honorable astronomers cannot be correct.

Indeed, Sagan's suggestion is so illogical as to cause wonder about his motive for making it. Surely he, of all people, would not insist that Venus had a temperature even greater than 6000K only 3500 years ago, yet this would have to be the case for his argument to hold true and be consistent with the temperature Venus now has. He implicitly assumes that no radiation from the Sun has impinged on Venus for the last 3500 years. Yet, elsewhere, and repeatedly, Sagan has claimed that a greenhouse effect keeps Venus hotter than anyone except Velikovsky ever expected. For consistency, should not the Venus greenhouse also be asked to function without energy from the Sun? Similar assumptions should be applied to both models - no solar input, if Sagan thinks that was the appropriate condition .

Straka's postulation was considerably more reasonable than Sagan's; however, Straka offered no support for his conclusion. It is permissible to speculate without quantitative analysis, but such a speculation cannot be advanced as "proof" that another is incorrect. This, however, was the apparent intent of Straka's statement. Nevertheless, his argument was reasonable enough to investigate further, so I made a rough calculation. My purpose was to determine whether Straka was uncontestably correct or the question required more detailed study to be resolved.

My calculation assumed a simple, exponential, decay rate. Observational data possibly indicating a cooling trend for Venus were included. A regression analysis was performed to see whether an exponential curve could be fit to the last few points yet lead back to a temperature of more than 1000K 3500 years ago. A reasonable curve was found for T = 1184K 3500 years ago. (The curve is steep for times around 3500 years ago, so that values considerably higher or slightly lower than 1184K would be compatible with my assumption.)

This of course does not demonstrate that the temperature of Venus was actually 1184K 3500 years ago. It reveals only that a rough calculation admits the possibility that the temperature of Venus was then of that order and that Straka's argument was either purely speculative or based on a more complex model. If the latter were the case, he should have included his calculations with his comment.

An accurate thermal model of Venus would be extremely difficult to develop. If one were attempted, however, it would more than likely be based on modern ideas about convection in planetary interiors, enabling them to lose heat much faster than by conduction alone. At first glance, one would question whether such ideas might exclude the possibility that Venus has had a thermal history consistent with Velikovsky's suggestions.


[*!* Image: INSERT KIV2_27.JPG] A 3500 Year Temperature History of Venus, Using Dr. Ransom's Initial Temperature of 1184 Kelvin.

Dr. C. J. Ransom, by an independent algorithm, had computed an 1184 Kelvin temperature for the Venus of 3500 years ago, by "back calculation" from an assumed 700 Kelvin today.

Dr. Talbott's program, beginning with an 1184 Kelvin temperature 3500 years ago, deduces a 715 Kelvin temperature today. This reasonably close correlation lends significant additional evidence for Dr. Velikovsky's principal thesis.


\cdrom\pubs\journals\kronos\vol0402\026note.htm