Science Frontiers
The Unusual & Unexplained

Strange Science * Bizarre Biophysics * Anomalous astronomy
From the pages of the World's Scientific Journals

Archaeology Astronomy Biology Geology Geophysics Mathematics Psychology Physics

About Science Frontiers

Science Frontiers is the bimonthly newsletter providing digests of reports that describe scientific anomalies; that is, those observations and facts that challenge prevailing scientific paradigms. Over 2000 Science Frontiers digests have been published since 1976.

These 2,000+ digests represent only the tip of the proverbial iceberg. The Sourcebook Project, which publishes Science Frontiers, also publishes the Catalog of Anomalies, which delves far more deeply into anomalistics and now extends to sixteen volumes, and covers dozens of disciplines.

Over 14,000 volumes of science journals, including all issues of Nature and Science have been examined for reports on anomalies. In this context, the newsletter Science Frontiers is the appetizer and the Catalog of Anomalies is the main course.


Subscriptions to the Science Frontiers newsletter are no longer available.

Compilations of back issues can be found in Science Frontiers: The Book, and original and more detailed reports in the The Sourcebook Project series of books.

The publisher

Please note that the publisher has now closed, and can not be contacted.


Yell 1997 UK Web Award Nominee INTERCATCH Professional Web Site Award for Excellence, Aug 1998
Designed and hosted by
Knowledge Computing
Other links


Search results for: polonium

4 results found.
Sorted by relevance / Sort by date
... Science Frontiers ONLINE No. 58: Jul-Aug 1988 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Gentry's tiny mystery-- unsupported by geology An article bearing the above title, by J. Richard Wakefield, appeared in the Winter 1987-1988 issue of Creation/Evolution . The title implies that Gentry's "Tiny Mystery" is soon to be demolished. It turns out in the end that a sweeping interpretation of this "Tiny Mystery" is called into question, but the mystery itself, like the smile on the Cheshire cat, remains. The "Tiny Mystery" is the existence of radiohalos from polonium-210, -214, and -218 in some biotites (micas), sans any detectable precursory uranium or halos thereof. Since the half-lives of the polonium isotopes are 138.4 days, 0.000164 second, and 3.04 minutes, respectively, it is certainly perplexing how the polonium halos got where they are! According to geological thinking, the igneous rocks containing the biotites must have been molten for a good deal longer than 138 days, thus destroying halos of short-lived isotopes. R.V . Gentry, a creationist, thinks that the polonium isotopes are primordial -- created by God some 6,000 years ago, in situ and without precursors. The rocks displaying the halos would, therefore, be among the oldest rocks on earth. What Wakefield does is exxamine the geology of some of the sites from which Gentry obtained his biotite samples. ...
Terms matched: 1  -  Score: 75  -  15 May 2017  -  URL: /sf058/sf058g11.htm
... Science Frontiers ONLINE No. 9: Winter 1979 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Tarnished halos?Pleochroic halos are dark rings of various radii seen in mica and other minerals. There is general agreement that alpha particles emitted by radioactive isotopes create the halos. The radii of the rings are proportional to the alpha particle energy, and can thus identify the isotopes in the mineral. Some halos, however, are apparently formed by very short-lived polonium isotopes without any trace of parent uranium isotopes. How can polonium isotopes with half-lives only seconds long get into geologically old mica sans parents? York argues the case for selective local chemical concentration of polonium from fluids in the surrounding rocks. The captured polonium atoms decay almost immediately while the fluid containing the parent atoms passes on. R.V . Gentry objects that mica is almost im permeable and that we must consider the possibility that our concepts of geological time are grotesquely wrong. York energetically defends established Geology using radioactive dating and paleontological arguments. His contempt of Gentry's position is scarcely veiled. This paper is an excellent review of the piechroic halo problem as well as a classic defense of the scientific status quo. (York, Derek; "Polonium Halos and Geochronology," EOS, 60:617, 1979.) Comment. York does not mention Gentry's years of careful work that led him to his heresy, nor are the many objections to radioactive dating discussed. It reminds one of the confident assertions of the permanency of the ocean basins ...
Terms matched: 1  -  Score: 53  -  15 May 2017  -  URL: /sf009/sf009p11.htm
... Science Frontiers ONLINE No. 62: Mar-Apr 1989 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects The "residue fallacy" does not apply to all residues!While preparing our latst catalog in the field of geology, have been struck by how slavishly some mainstream scientists worship the Residue Fallacy. Briefly, this "fallacy" states that a single type of discrepant observation should not be considered viable if it contradicts a large body of well-established, internally consistent observations. In geology, the Residue Fallacy is employed to dismiss the precursorless polonium halos found by R.V . Gentry, as well as some other radiometric discordances. These scientists seem to have forgotten about the anomalous advance of Mercury's perihelion and a few other obvious residues that ultimately stirred up revolutions in our thinking. Anyway, it is now satisfying to find the Editor of Nature, mainstream science's preeminent journal, acknowledging the value of anomalies. The stimulus in this case is the morethan-a -decade-old inability of astronomers and physicists to explain the missing solar neutrinos. Two new, more sophisticated, neutrino detectors have come on line, in Japan and the U.S ., and they have confirmed the results obtained in the huge vat of cleaning fluid in the Homestead Mine, in South Dakota. For some reason, everyone measures only about one-third the number of solar neutrinos expected. Either something is wrong with our model of the sun's (and other star's ) energy-producing mechanism or our ...
Terms matched: 1  -  Score: 15  -  15 May 2017  -  URL: /sf062/sf062a03.htm
... questions of origin persist. (See SF#25 and SF#58.) No one questions that radiohalos, whether in biotite or diamonds, arise from the the decay of radioactive inclusions; that is, mineral specks carrying uranium, thorium, or some other radioactive element. But how did these radioactive specks get lodged inside the hollow tubes which themselves are encased within diamonds? The problem is that these specks have much lower melting points than the diamond matrix. Why wasn't the liquid radioactive material dispersed throughout the higher melting point diamond matrix long before the latter crystallized? The same question must be asked about the radiohalos themselves, because the application of heat quickly anneals and disperses them. Complicating the picture still further is the fact that some of the radiohalos arise from the decay of polonium-210, which has a half life of only 138 days. The hollow tubes, the lowmeltingpoint inclusions, and shorthalflife radiohalos combine complicate the explanation of diamond origin(s ) and geological history. (Armitage, Mark; "Internal Radiohalos in a Diamond," Creation Ex Nihilo Technical Journal, 9:93, 1995. This creationist journal is published in Australia. The article is based mainly on: Mendelssohn, M.J . et al; "Internal Radioactive Haloes in Diamonds," Diamond Research , 17:2 , 1979.) Comment. Explanations of the forgoing conundrums hypothesize the invasion of crystals by impurities after diamond solidification. *SF#92 = Science Frontiers #92. From Science Frontiers #101 Sep-Oct 1995 . 1995-2000 William R. ...
Terms matched: 1  -  Score: 13  -  15 May 2017  -  URL: /sf101/sf101g09.htm

Search powered by Zoom Search Engine