Another Sriracha shortage looming?
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The Long Emergency
Comments (53)Wayne, here's the headline...Crystal power Palmtop Nuclear Fusion Device Invented By Michael Schirber LiveScience Staff Writer posted: 27 April 2005 01:00 pm ET The nuclear reaction that powers the Sun has been reproduced in a pocket-sized device, scientists announced today. Researchers have for years tried to harness nuclear fusion to power the world. But its cousin, nuclear fission -- the breaking apart of atoms -- is the only method so far commercially viable. The latest invention is not in the same league as efforts to build complex commercial reactors. The new device creates a relatively small number of reactions, and requires more energy to operate than it produces. The Real Deal (AP) - Previous claims of tabletop fusion have been met with skepticism and even derision by physicists. In one of the most notable cases, Dr. B. Stanley Pons of the University of Utah and Martin Fleischmann of Southampton University in England shocked the world in 1989 when they announced that they had achieved so-called cold fusion at room temperature. Their work was discredited after repeated attempts to reproduce it failed. Fusion experts noted that the new UCLA experiment is credible because, unlike the 1989 work, it did not violate basic principles of physics. "This doesn't have any controversy in it because they're using a tried and true method,'' said David Ruzic, professor of nuclear and plasma engineering at the University of Illinois at Urbana-Champaign. "There's no mystery in terms of the physics.'' -- Associated Press But the configuration is so small and simple that its creators think it may inspire unforeseen applications. "I certainly find it interesting that you can heat a cubic centimeter crystal in your hand, then plunge it in cold water and it will cause nuclear fusion," Seth Putterman from the University of California Los Angeles told LiveScience. Putterman's lay description greatly oversimplifies how the compact apparatus works. Specifically, Putterman and collaborators heat a pyroelectric crystal, lithium tantalite, from minus 30 degrees Fahrenheit to plus 45 in a matter of minutes. This generates an electrical charge -- 100,000 volts -- across the tiny crystal, which is housed in a chamber filled with deuterium gas, a heavy form of hydrogen. The high voltage is focused onto a needle-thin tip, which strips electrons from nearby deuterium nuclei and then accelerates them at a solid target containing deuterium. When two deuterium nuclei collide together at high speed, they fuse to form helium. The Sun also fuses atoms in thermonuclear reactions that create light and heat. The byproduct of the newly discovered lab reaction is a particle called the neutron. The scientists detect about 1,000 neutrons per second. Because neutrons are so penetrating, Putterman said that a hand-held neutron source might one-day be used to do geologic surveys or to look into cargo containers for nuclear devices. "Current neutron generators are extremely cumbersome," Putterman said. "They are about as big as a dentists X-ray machine, so you canÂt carry them into the field." Pyroelectric crystals could also provide a beam of ions for use as a microthruster in a miniature spacecraft. The research is described in the April 28 issue of the journal Nature....See MoreGardening our latitude with attitude
Comments (43)The trouble with lists of frost hrady and dry hardy plants, is that they vary so much from area to area. Where my parents-in-law live in the wimmera, their sandy soil and lower rainfall means plants like lavender and rosemary will die if they aren't watered, whereas mine are never watered and do extremely well here on my heavier soils, colder climate and higher rainfall. My echiums, which are listed as 'frost sensitive' have been frosted many, many times and are growing like crazy things. I love them. As for trees - the five acre front of my block is planted out to about 1000 decidious trees. I love them at any time of the year. The silver birches look great in any season, as do the ornamental pears, with their shiny red bark. How would you ever enjoy the twisted limbs of the Scotch elm if the leaves didn't drop off once a year? We mulch with straw and manure. The large groves of birch trees were not watered through the drought and did very well. We are slowly manuring and mulching every tree. The ones we have done are growing like crazy and need very little attention. As for water - we don't get town water, so supply our own. I use it however I want to at whatever time of the day I want to. If anyone doesn't like it, come here and tell me face to face. (...and I will squirt you with the hose ;-) You want to save some of the planet's resources? Stop buying pre-prepared food in multiple packaging. Buy 'whole' food only and make your own. My absolute top plant for dry, un-mulched, un-manured sandy, clay soil? Ornamental grapes. They look good in winter too. Finally, I have lived, worked and gardened in every outback, stinking hot, dry and impoverished place in Australia. We moved here because of the climate and rainfall and I intend to plant, water, manure and mulch whatever I damn well please. If that offends anyone, as my nephew would say - talk to the eyeballs. Or try gardening in Paraburdoo without watering, mulching or manuring anything and see how much fun gardening can really be! Robyn...See MoreWhere’s the beef?
Comments (33)maifleur03 "Desertsteph meatloaf does not have to be made from beef." thx. I haven't gotten good tasting ground beef at the store in a decade or so. It could be my 'taster' tho 'cause I've notice other things I've eaten for years that I no longer like or eat. otoh, I thought back to eating burgers my BIL grilled and brought over to me on holidays (like the 4th) and they were good. so I'm hoping this Sam's club beef will make the difference. I'll cook up the Sam's club meat this next week and find out. but using another meat might be something I could try. the only option that I might like for a meatloaf would be a mild sausage. thx for the idea, I really hadn't thought of using a different meat for it....See MoreBuyer beware of arrogant furniture company, Serena & Lily!
Comments (46)I have never thought of wicker, rattan, or similar furniture as anything but disposable. Indoors or outdoors, but outdoors is especially tough. Most of our outdoor furniture is solid teak, and the oldest pieces are going on 20 years now and still fine. We also have some folding teak chairs, and one of those broke but was repaired. These pieces were not inexpensive but cost less than the S & L chairs being discussed here. The disadvantage is that, well, we’ve had the same ”look” for decades. For outdoors, I think you get wicker, plastic, fabric, etc for a cheap and cheerful look that you can change around every few years. I wouldn’t pay much for it. By the way, the furniture industry is going through a slump right now, so there are deals to be had....See More- 2 years ago
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