|Updated: 5/16/2006; 9:57:51 AM.
|Ken Novak's Weblog
Purpose of this blog: to retain annotated bookmarks for my future reference, and to offer others my filter technology and other news. Note that this blog is categorized. Use the category links to find items that match your interests.
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Wednesday, December 05, 2001
-- a concept for redefining wireless bandwidth so it no longer requires lisencing. "Bandwidth is just a parameter in an equation; it's not a naturally bounded resource." Electromagnetic signals don't really travel between specific points; they radiate outward indefinitely, until they become undetectable. The magic happens at the endpoint devices. ...Radio waves pass through each other; what we call "interference" is a function of each receiver's ability to distinguish among them. Communication is inherently an exercise in computation. ... Through equipment certification rules, the spectrum would go from a fixed resource to one that expands with additional computing power and technical innovation. New users could actually increase the bandwidth available by contributing to the cooperative intelligence of the network.
See also 802.11 news
and an international directory
. 6:30:56 PM
is a book by Amory and Hunter Lovins, published in 1982 and revised this year after Sept 11, now available in full on their website. It was a Pentagon study of the vulnerability of US energy infrastructure. The preface
is excellent. 1:30:43 PM
is a developer of regenerative zinc/air fuel cells. They're refillable batteries
with an electrolyzer for recharging
the spent "fuel" which is an electrolyte solution carrying zinc pellets that are .5-.8 mm). Applications inlcude garden tools,
motor scooters, and computer UPS. Electric Fuel
is a company demonstrating city buses
and laptop rechargers. Metallic says the roundtrip efficiency (electricity out of the fuel cell divided by electricity into the recycling unit) is 40-60%, depending on the rate of recycling and discharge. 12:19:47 PM
Copyright 2006 © Ken Novak.
Last update: 5/16/2006; 9:57:51 AM.