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Science
Apr 5, 2006 23:17:27 GMT -5
Post by joe on Apr 5, 2006 23:17:27 GMT -5
one last thing, if you count out the times of the songs you'll see patterns of, you guesed it, 4 5 6.
ie: 4 banjo songs in 4/4, 5 in 5/4 and 6 in 6/8
and other similar patterns, where i made a mistake counting i sang about it...............
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Post by degicank on Apr 7, 2006 2:52:02 GMT -5
Robert Speers 4/7/6
Summary of “Fall Overturn” by Ted Levin
This essay helps to give a real world example of the” weird” property of water that causes its solid phase to be less dense than its liquid phase. Life’s existence is dependent on waters unique characteristics. This essay describes the process of circulation that occurs in lakes when the temperature reaches 39.2 degrees. 39.2 is the temperature when water is at its maximum density. This essay uses Lake Fairlee to describe differences in density water exhibits at different temperatures. In the summer the water in the lake is stratified into three layers with different temperatures and densities. The top layer, or zone, is in contact with the air, and has the most oxygen and the least nutrients. The middle layer is up to fi15 degrees cooler, and the lowest layer has the least oxygen and the most nutrients. In the summer these layers usual are distinct and do not mix. In the fall the lake cools and the boundaries between the layers become less distinct. The water on top cools and begins to sink. When the temperature reaches 39.2 degrees the water is most dense. At this stage, water that is any cooler than 39.2 will rise to the to trapping the warmer water below. The time when the water is at 39.2 is when the lake approaches a nearly uniform density, and the nutrients and oxygen are mixed through the lake. After the top layer freezes the water does not mix any further. In the spring when the ice melts, the water reaches 39.2 degrees and mixes again before settling into the three distinct zones present through the warm weather months.
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Science
Apr 7, 2006 12:05:24 GMT -5
Post by Bill on Apr 7, 2006 12:05:24 GMT -5
Interesting.
Didn't quite understand this part:
" At this stage, water that is any cooler than 39.2 will rise to the to trapping the warmer water below."
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Post by Joe on Apr 9, 2006 7:29:12 GMT -5
Water exhibits strange properties uniuqe to it. On e strange thing is the solid form ice is less dense than the liquid form. This is why ice cubes are bigger than the amount of water you put in the tray. The ice is less dense because it forms a latice like shape with empty space in between the molecules, usualy a solid will have the molecules close together. The densest water can be is at 39.2 deggrees, that is how the water under ice stays liquid and keeps the fish from freezing, the dense water falls below the less dense ice. see the spaces inbetween the molecules, that is what decreases the density of H2o in its solid form...
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Science
Apr 9, 2006 11:52:56 GMT -5
Post by joe on Apr 9, 2006 11:52:56 GMT -5
I got an 93 on my chem test...
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Science
Apr 9, 2006 13:54:24 GMT -5
Post by DrCank on Apr 9, 2006 13:54:24 GMT -5
good job on the test buddy, way to knock chemistry out da dox.
i am preatty sure their is one other molecule that exhibits the same density anomally. I beive it is variant of methyl-hydroxide. It is a molecule found in great abundance in one of the two inner planets, inspiring many to imagen a biosphere formulated around a molecule other than H2O.
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Science
Apr 11, 2006 12:19:31 GMT -5
Post by joe on Apr 11, 2006 12:19:31 GMT -5
Printable Silicon
“Printable Silicon” by Henry Fountain, 4/11/6, New York Times
This article describes a process developed by Tatsuya Shimoda. Presently silicon is applied to microchips through vaporizing it or mysterious “chemical processes”. Once applied to the chip, the silicon can be etched or doped to create the circuits needed for computers, photo-voltaics or other uses The new technique developed by Tatsuya allows silicon to be printed onto chips as if it were ink. The melting point of silicon is 2,600 degrees Fahrenheit, so in order to create a liquid form of silicon that can be used at easier to deal with temperatures Tatsuya used a compound called cyclopentasilane. Cyclopentasilane is made of silicon and hydrogen, and is a liquid at room temperature. By bombarding the cyclopentasilane with ultra violet light, the substance becomes a polymer, which is more stable. The liquid can then be printed directly into circuits. After printing the circuit needs to be heated to 900 degrees Fahrenheit. This heat causes the silicon to become a polycrystalline semiconductor. As of now this technology can only produce simple circuits, but it may reduce the huge expenses associated with microchip production, allowing increased technological benefits to many products.
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Science
Apr 11, 2006 13:57:45 GMT -5
Post by Bill on Apr 11, 2006 13:57:45 GMT -5
I read a propeganda letter today about 9/11 I found on the subway.
It stated that the towers falling were caused by explosions after the planes hit, not from jet fuel spilling down floors and melting the 4 inch(?) steel cores.
The steel was still molten hot days later.
Jet fuel is very similar to kerosene and burns at around 1500 degrees. Where the melting point of steel is 2500 degrees.
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Science
Apr 11, 2006 16:24:58 GMT -5
Post by 11337799773311ben on Apr 11, 2006 16:24:58 GMT -5
In regards to 9/11 conspiracy:
My wife asked our head spiritual teacher, who time after time has demonstated his clarivoyant abilities, (i.e. seeing the slipped disc in my back and drawing a picture of it for me, predicting events before they happen, telling me many of the organic brands on the market lie about being organic far before this information was available (watch out for horizon organic dairy), etc.) about the movie Farenheit 9/11. Although he hadn't seen the movie he said, "everything in this film is true, and what is in this film is this much (holding up a sliver of space between his pointer finger and thumb) of the corruption that is happening in the world at this time".
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Science
Apr 11, 2006 22:19:21 GMT -5
Post by JOe on Apr 11, 2006 22:19:21 GMT -5
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Science
Apr 11, 2006 22:23:46 GMT -5
Post by Joe on Apr 11, 2006 22:23:46 GMT -5
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Science
Apr 14, 2006 0:51:27 GMT -5
Post by degicank on Apr 14, 2006 0:51:27 GMT -5
this is what I can do now:
2.5gNa+ * 1molNa+/22.99gNa+ * 1molNa2SO4/2molNa * 1literNa2SO4solution/0.125molesNa2So4 * 1000ml/1liter =
435ml of 0.125M Na2SO4 solution needed
What does it mean? I don't know.
Robert Speers 4/14/6
Summary of “A Solution to Skunk Pollution”
This essay describes the chemical composition of a skunk’s defense mechanism, and the best way to neutralize it. The author describes Skunk’s secretions as smelling like “a mixture of sodium sulfide and an acid”. When these two substances interact they produce hydrogen sulfide, which smells like rotten eggs. To obtain samples of the skunk secretions the animal is first rendered unconscious. The contents of the skunk’s scent glands are then extracted by syringe. The chemical composition of Skunk secretion was first determined in 1862 in Germany by Dr. Swarts of Ghent. Dr. Swarts found that the secretion contained many substances, but the most prevalent was sulfur at 16%. It took another century to determine exactly the composition of the rest of ingredients. By using gas chromatography-mass spectrometry one of the most potent ingredients Trans-2-butene-1-thiol was identified. The goal of research into skunk secretions is to determine an antidote for the unfortunate being sprayed by a skunk. The most common remedy, tomato juice, is not effective in removing the Trans-2-butene-1-thiol. The cure for skunk spray was identified by Paul Krebaum at the Indiglo watch company. When making glow in the dark chemicals hydrogen sulfide is left over. In order to eliminate the bad smell from hydrogen sulfide Krebaum circulated air through a concentrated hydrogen peroxide and sodium hydroxide solution. The hydrogen sulfide oxidized when combined with hydrogen peroxide to form an odorless sulfate. This method would be dangerous to humans and animals because 30% hydrogen peroxide and sodium hydroxide are poisonous. Krebum substituted 3% hydrogen peroxide and baking soda plus a small amount of dish soap to create a nontoxic skunk scent neutralizer. The reason tomato juice has been believed to work is just because of the water washing away the smell, and reacting with “thiols” present in the secretions. Thiols can continue to be produced over time. Krebaum’s formula converts the thiols immediately and allows them to be removed. Skunk smell can be useful in repelling bears, and camouflaging the scent of hunters. The skunk smell has also been used as a nonlethal weapon to protect people from muggers.
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Science
Apr 14, 2006 7:18:47 GMT -5
Post by kid on Apr 14, 2006 7:18:47 GMT -5
Here is the Honda commercial Pretty neat. : Read before viewing the link! You thought those people that set up roomfuls of dominos to knock over were amazing... There are no computer graphics or digital tricks in the film. Everything you see really happened in real time exactly as you see it. The film took 606 takes. On the first 605 takes, something, usually very minor, didn't work. They would then have to set the whole thing up again. The crew spent weeks shooting night and day. By the time it was over, they were ready to change professions. The film cost six million dollars and took three months to complete including full engineering of the sequence. In addition, it's two minutes long so every time Honda airs the film on British television, they're shelling out enough dough to keep any one of us in clover for a lifetime. However, it is fast becoming the most downloaded advertisement in Internet history. Honda executives figure the ad will soon pay for itself simply in "free viewings" Honda isn't paying a dime to have you watch this commercial!). When the ad was pitched to senior executives, they signed off on it immediately without any hesitation - including the costs. There are six and only six hand-made Honda Accords in the world To the horror of Honda engineers, the filmmakers disassembled two of them to make the film. Everything you see in the film (aside from the walls, floor, ramp, and complete Honda Accord) is parts from those two cars. The voiceover is Garrison Keillor. When the ad was shown to Honda executives, they liked it and commented on how amazing computer graphics have gotten. They fell off their chairs when they found out it was for real. Oh. and about those funky windshield wipers. On the new Accords, the windshield wipers have water sensors and re designed to start doing their thing automatically as soon as they become wet. It looks a bit weird in the commercial. click here www.albinoblacksheep.com/flash/honda.php
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Science
Apr 14, 2006 22:19:17 GMT -5
Post by joe on Apr 14, 2006 22:19:17 GMT -5
cool!
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Science
Apr 18, 2006 13:03:40 GMT -5
Post by degicank on Apr 18, 2006 13:03:40 GMT -5
“Mosses Reach down for Nitrogen” By Henry Fountain New York Times 4/18/6
This article relates to chemistry because it discusses Nitrogen, isotope tracking, and nitrogen in an aqueous solution. Edward Ayres of Lancaster University has reported some exciting new discoveries in the world of mosses. Mosses are not vascular as plants are. Vascularity involves the transport of water and nutrients via specialized tissue such as roots. Until now scientists surmised mosses received their nitrogen directly from the atmosphere rather than from the soil. Ayres studied a moss that receives it’s water from precipitation. An isotope of nitrogen was injected into the soil. To the surprise of the researchers the nitrogen was tracked entering the moss through its shoots. This showed the moss was able to absorb nitrogen directly from the soil, even without a vascular system present.
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