Thanks, I was just interested in a ballpark estimate of the likelihood. [I believe Velikovsky may have contributed to this idea.]
Yes indeed.You further wrote:
The polymerization to form carbohydrates I could not locate any information on (formaldehyde does tend to polymerize to form 1,3,5-trioxane and polyoxymethylene, but those don't seem to be sugars or starches although they have the same elemental composition).
By concentrations, I meant how much of these initial cometary hydrocarbons would be necessary to produce the estimated quantity of manna needed.
Presently we release large amounts of hydrocarbons into the atmosphere and these apparently produce formaldehyde http://www.ucar.edu/communications/staf ... brief.html
, but I haven't found any mention of carbohydrates
Earlier, I mentioned that the process began through irradiation in the upper atmosphere ie that part of the atmosphere directly exposed to the rays of the Sun (not so from the ground upwards)
You appear to know your chemistry very well, so I'll quote a passage from
W.K. Kuong, who informs us that if:
"...hydrocarbons shrouded the Earth, part of it would mix with hydrogen of the hydrogen layer and another would be oxidized by the oxygen of the oxygen layer. The main products of combustion are carbon dioxide, carbon monoxide and water vapour through cosmic irradiation, as laboratory experiments suggest. The action of cosmic radiation on the carbon dioxide/hydrogen/carbon monoxide/water vapour mixture would generate formaldehyde. Once formaldehyde is formed, various types of sugars and starches would be generated by the process of polymerization and aldol condensation. The general formula for the process is,
nCH2O = (CH2O)n
"In the above equation n is any integer. In n =5, the product is pentose; if n =6, the product (isomers also exist) is a hexose, etc.
"Formaldehyde should be formed during the day when the gaseous mixture is bombarded by particles from the solar furnace. The product would polymerize in the cool of the night, particularly on dust particles, and rain down in the early morning. If one refers to Exodus
, one finds that manna was deposited early in the morning with the dew.
"Dr. A.J. Swallow, in his text Radiation Chemistry of Organic Compounds
writes, 'The synthesis of organic compounds through the agency of high energy radiation had been amply demonstrated in the laboratory, an elementary example being the alpha-induced reaction between carbon dioxide and hydrogen to give formaldehyde, which then reacts further. Carbon monoxide can be reduced similarly. The main final product of irradiation in both cases appears to be a white solid composition
(CH2O)n, which is presumably produced by polymerization of formaldehyde"
Reports around the world describe manna as "milky" or "honey-like".