Domain: laurentian.ca
Stories and comments across the archive that link to laurentian.ca.
Comments · 10
-
Re:What if...
That's the classical deduction using Schrödinger's equation. The only "relativistic" approximation is the dispersion relation, but they use Schrödinger's equation to get the kets. We use spinors, not bras/kets, when you solve the (relativistic) Dirac equation; in that case, you get the same probabilities.
See this for a reasonably simple deduction using Schrödinger's equation, that gives you the exact same formulae as your Wiki link. If you use a fully relativistic approach, you get the same final results but no dependency on the mass (only on mass splitings).
-
Re:Delay a person's ability to tell a lie
The work of this man:
http://oldwebsite.laurentian.ca/neurosci/_people/Persinger.htm -
Applications to Uranium 235 EnrichmentA while back there was an article about 2 geophysiscists ( sp ) who found iron isotope ratios were affected by being metabolized by bacteria.
Their bacteria Shenwala alga, reduces the iron from Fe(III) to Fe(II) ( uses the iron as oxygen in it's metabolism ) . Other bacteria ( Desulfovibrio Ferrireducens ( sp ) ) have shown to reduce uranium from U(VI) to the less soluable U(IV) and have been used to clean up mine tailing drainage by making all the uranium insoluable.
Since any chemical reaction that is not allowed to go to completion causes isotopic enrichment ( presumably the lighter isotope is the preferred reactant ) and metabolism by bacteria is really just a chemical reaction there is some enrichment there.
Other bacteria which oxidize iron like Thiobacillus Ferrooxidans have been used to leach uranium out of ores by oxidizing it to a soluable state.
Since any chemical reaction not completed results in some isotopic enrichment one might enrich U235 by, feeding the dissolved Uranium oxide produced by Thiobacillus Ferrooxidans from raw ore to the anaerobic Desulfovibrio ferrireducens where it would reprecipitate. Then feed the precipitated uranium oxide back to thiobacillus ferrooxidans to produce more uranium liquor to feed to desulfovibrio ferrireducens forming cascaded stages which would gradually enrich the U235 until it was useful for fuel rods etc.
The question is: how much energy does this take, and how efficient is the enrichment? How much sugar/light/whatever-these-bugs-eat do you need to feed them per stage and is it more economical energy-wise than other uranium enrichment methods already in use?
A home experimenter interested in developing this into a patentable process would be breaking the law by enriching uranium. After learning how to grow these beasties ( I'm sure they'd sell them to you since they are not dangerous ) you would have to measure the enrichment achieved bu sending a sample off to a mass spectometry lab. It would behove one to send the depleted uranium rather than the enriched uranium so as not to piss anyone off ( hope it wasn't the heavy isotope the bugs liked better! ). Then you could measure how much it costs you to feed the bacteria per kilo of metabolized uranium and compare it to the cost of existing enrichment methods by looking it up, and decide if you have something worth patenting. Profit.
-
Re:Occam's Razor...You forgot an option.
(c) There are processes in the brain that, under the right circumstances, cause people to have visions, revelations, out-of-body experiences and a truckload more of experiences we call "spiritual". Some of the people who have those experiences record them and/or become prophets, who sometimes start new religions.
People like Michael Persinger have done a lot of studies on this recently. Persinger is even capable of inducing some of these effects -under laboratory conditions- by stimulating the brain by magnetic fields (with the so called Perisinger helmet). He can make you have a God experience which people who have these experiences without the magnetic stimulation consider authentic.
Now what is more plausible, concidering (b) makes everyone who says he has such spiritual experiences a lier with a desire to control society?
-
Re:Alien Abductions [and the God Helmet]The Dr. you are referring to was Dr. Michael Persinger from Laurentian University in Canada, whose lab has been doing this kind of research work for a number of years. He has built a "God Helmet" and a newer model called "the octopus" that allows the subject to experience the euphoria of god-like experiences, and the strange effect of time slowing down.
A previous Slashdot story "Where God Lives In Your Brain" covered most of his work on extremely low frequency electromagnetic field effects.
-
Been there, done that... again
This has been done before. Wired magazine published an article in november 1999 on this. The reshercher (Michael Persinger, neuropsychologist at Canada's Laurentian University in Sudbury) is doing research on using electromagnetic fields to induce feelings directly in the brain. Induced feelings include sensatgion of God's presence, sensation of out of body experiences, etc.
I remember when I read this article, I was blown away. Something to really make you think... :-) -
Local Colour
Hey, life's real exciting here in Sudbury. Take a look.
Stompin' Tom Connors even wrote a song to prove it!
There are occasional tours of the SNO site (usually for academics and visiting dignitaries) but you have to set aside a large block of time just to allow for transit time down and back up. -
SNO / Laurentian Press Release from 18 April
*Yawn* We knew about it last week. Here's a snippet from the copy released by PR people at Laurentian University in Sudbury:
New scientific results from the Sudbury Neutrino Observatory to be announced
April 18, 2002
(Sudbury, Ontario) - Scientists from Canada, the United States and the United Kingdom, working at the Sudbury Neutrino Observatory (SNO), a unique underground laboratory built to provide insights into the properties of neutrinos and their emission from the core of the Sun, will submit a scientific paper with important new results later this week. They will announce these research findings in a scientific presentation by Dr. Andre Hamer on Saturday, April 20, at the Joint Meeting of the American Physical Society and the American Astronomical Society in Albuquerque, New Mexico. A copy of the first scientific paper and news release summarizing SNO's findings and their importance will be posted on the SNO website (www.sno.phy.queensu.ca) at 1:20 p.m EDT (10:20 a.m. PDT) on Saturday, April 20. A summary talk on the implications of these neutrino measurements will be presented by Dr. John Wilkerson on Monday, April 22, at the same conference.
"We look forward to this opportunity to share these new findings with the scientific community and the general public," says Dr. Art McDonald, SNO Project Director and member of the Department of Physics at Queen's University. "For the first time, we are reporting on an important neutrino reaction in the SNO detector - a reaction in which all known neutrinos participate, regardless of their type. The successful observation of these neutrino signals has been a chief goal of the years of intense work by a collaboration of close to 100 scientists at 11 universities and national laboratories in Canada, the United States and the United Kingdom, and we are very pleased with the quality of the data obtained."
In June 2001, the SNO scientific collaboration announced definitive results based on two other reactions seen in the SNO detector, and on measurements at the SuperKamiokande neutrino detector in Japan, establishing that neutrinos from the Sun change from their original electron neutrino type, to a mixture of electron and other (mu or tau) neutrino types. The new data from the Sudbury Neutrino Observatory to be announced on April 20, enables this question to be addressed accurately from data obtained entirely from SNO, and is expected to enhance significantly our understanding of these important properties of neutrinos from the Sun and of the Sun itself.
Additional information about the conference presentations, the SNO laboratory, the neutrino measurements being made and the participating institutions can be found at www.sno.phy.queensu.ca.
-
SNO / Laurentian Press Release from 18 April
*Yawn* We knew about it last week. Here's a snippet from the copy released by PR people at Laurentian University in Sudbury:
New scientific results from the Sudbury Neutrino Observatory to be announced
April 18, 2002
(Sudbury, Ontario) - Scientists from Canada, the United States and the United Kingdom, working at the Sudbury Neutrino Observatory (SNO), a unique underground laboratory built to provide insights into the properties of neutrinos and their emission from the core of the Sun, will submit a scientific paper with important new results later this week. They will announce these research findings in a scientific presentation by Dr. Andre Hamer on Saturday, April 20, at the Joint Meeting of the American Physical Society and the American Astronomical Society in Albuquerque, New Mexico. A copy of the first scientific paper and news release summarizing SNO's findings and their importance will be posted on the SNO website (www.sno.phy.queensu.ca) at 1:20 p.m EDT (10:20 a.m. PDT) on Saturday, April 20. A summary talk on the implications of these neutrino measurements will be presented by Dr. John Wilkerson on Monday, April 22, at the same conference.
"We look forward to this opportunity to share these new findings with the scientific community and the general public," says Dr. Art McDonald, SNO Project Director and member of the Department of Physics at Queen's University. "For the first time, we are reporting on an important neutrino reaction in the SNO detector - a reaction in which all known neutrinos participate, regardless of their type. The successful observation of these neutrino signals has been a chief goal of the years of intense work by a collaboration of close to 100 scientists at 11 universities and national laboratories in Canada, the United States and the United Kingdom, and we are very pleased with the quality of the data obtained."
In June 2001, the SNO scientific collaboration announced definitive results based on two other reactions seen in the SNO detector, and on measurements at the SuperKamiokande neutrino detector in Japan, establishing that neutrinos from the Sun change from their original electron neutrino type, to a mixture of electron and other (mu or tau) neutrino types. The new data from the Sudbury Neutrino Observatory to be announced on April 20, enables this question to be addressed accurately from data obtained entirely from SNO, and is expected to enhance significantly our understanding of these important properties of neutrinos from the Sun and of the Sun itself.
Additional information about the conference presentations, the SNO laboratory, the neutrino measurements being made and the participating institutions can be found at www.sno.phy.queensu.ca.
-
Kinesiology is a BSc degree in human movementDisclaimer: My girlfriend is a kinesiologist
I'm not sure what Jamie's chiropractor is telling Jamie, but Kinesiology (the American term is "Kinesiotherapists"), as in the Bachelor of Science degree offered by universities, is the study of human movement. As the Kinesiology page from Laurentian University explains:
Kinesiology is the scientific study of human movement. As we move into the 21st century, society is placing more and more emphasis on technology and the scientific research that supports it. The area of Kinesiology is no exception to this trend, as the study of human movement in occupational, recreational, health, sport, and leisure environments has come under increasing scrutiny.
The Kinesiology approach to rehabilitation therapy is very much a "use it or lose it" approach; that is, the belief that the best therapy for those that can manage it is exercise. Kinesiologists "grow up" to become rehab therapists, ergonomists, and personal trainers, among other health and fitness-related occupations.
Kinesiology is not about weird New-Age modalities like "touch therapy"...