Why Lead Used to Be Added To Gasoline Today I found out why lead used to be added to gasoline. “Tetraethyl lead” was used in early model cars to help reduce engine knocking, boost octane ratings, and help with wear and tear on valve seats within the motor. Due to concerns over air pollution and health risks, this type of gas was slowly phased out starting in the late 1970’s and banned altogether in all on-road vehicles in the U.S. in 1995. For a more detailed explanation of why lead used to be added to gasoline, it’s necessary to understand a little bit more about gasoline and what properties make it a good combustion material in car engines. Gasoline itself is a product of crude oil that is made of carbon atoms joined together into carbon chains. The different length of the chains creates different fuels. The higher the compression in the cylinders a car’s motor can produce, the greater the power it can get out of each stroke of the piston. In 1919, Dayton Metal Products Co. merged with General Motors. Bonus Facts:
The Power of Stupidity Giancarlo Livraghi was recruited to Serendipia by Ron Lee and Jake Ghitis (see About Serendip Forum, 25 August, and following). Giancarlo is a writer, living in Italy, who has been involved in advertising, and currently concentrates on "the human and social issues of electronic communication", having been a founder of ALCEI-Electronic Frontiers Italy. Among his writings in English is an on line newsletter. Giancarlo's essays on stupidity appeared originally in Entropy Gradient Reversals, and are mirrored here with his permission. Some additional information about Giancarlo is provided by Entropy Gradient Reversal as part of their posting of his second essay. By Giancarlo Livraghi gian@gandalf.itJune 1996 [See also The Power of Stupidity, Part II, written 15 months later.] I have always been fascinated with Stupidity. My own, of course; and that's a big enough cause of anxiety. But things get much worse when one has a chance to find out how Big People take Big Decisions. First Law and Fifth Law
VrayWorld - Scripts & Plugins for 3d environment creation We categorized all those tools for easier research and study according to the usage they have in the creation of our environment. So we have four different categories. Terrain - Vegetation - Rocks & Pavements - Scattering. Maas Architects Bellinkhofartwork by: Nijland George Terrain creation. Populate Terrain: Optimized terrain generation from contour lines. Terrain Maker: This script was written to speed up working with other packages to create grayscale images to be used as height or displacement maps in max.It lets you change the resolution (detail) and the height of the terrain in max. Terrain-conformer: This script conforms a terrain surface to a road in just a few click. Top Plane Slice: This tool is usefull for breaking massive terrain objects e.g. for game engines. Vue: Offers CG professionals the premiere solution for creating exceptionally rich and realistic Digital Nature environments with seamless integration into any production workflow. Vegetation modeling. Rocks & Pavements.
The Six-Lesson Schoolteacher, by John Taylor Gatto Call me Mr. Gatto, please. Twenty-six years ago, having nothing better to do, I tried my hand at schoolteaching. My license certifies me as an instructor of English language and literature, but that isn't what I do at all. Teaching means many different things, but six lessons are common to schoolteaching from Harlem to Hollywood. The first lesson I teach is: "Stay in the class where you belong." In any case, again, that's not my business. Nevertheless, in spite of the overall blueprint, I make an effort to urge children to higher levels of test success, promising eventual transfer from the lower-level class as a reward. The lesson of numbered classes is that there is no way out of your class except by magic. The second lesson I teach kids is to turn on and off like a light switch. The lesson of bells is that no work is worth finishing, so why care too deeply about anything? The third lesson I teach you is to surrender your will to a predestined chain of command.
The Dark Side of the Moon (Landing) | earthriderdotcom Some dispute that the U.S. sent a man to the moon. Astronaut Buzz Aldrin is the second man to walk on the moon’s surface in 1969 By Judy Berman Over eight days during July 1969, all eyes were on Apollo 11, when it became the first manned mission to land on the moon. More than 40 years after this historic event, about 6 percent of Americans still dispute that we ever set foot on the moon. They think it was a plot by the government to generate pride during the space race. It fulfilled a goal set by President John F. Apollo 11 made its landing on July 20, 1969. Yet, Bill Kaysing, considered to be the father of the moon hoax, said the whole event was staged. Kaysing, himself, was not an engineer. And, yet, his story had legs. I decided to pick an engineer’s brains on this subject: my Dad. Dad had an analytical mind and addressed some of the claims in Kaysing’s book. Here’s the scoop from the web site science.howstuffworks: Mythbusters’ Adam Savage and Jamie Hyneman I just hope it’s real soon.
What’s Wrong with Meritocracy? | China Power This nation uses a series of complex, almost arbitrary, tests to select its elite, who learn to excel in exams and at certain set up tasks, but who also lack imagination and self-reflection. They’re obsessed with constantly climbing, and are often so blinded by short-term goals that they can be indifferent to how the world might be crumbling around them. The thing is, I could be describing either the Chinese or the American elite. The Economist magazine recently published a survey on the global elite that reads like David Brooks’ Bobos in Paradise, except without the wit, the intelligence, and the relevance. The report quite incredibly argues that the global elite is a meritocracy that ‘serves’ the people by creating new wealth, generating new ideas, and spearheading new causes—so we shouldn’t be too hard on them for monopolizing much of the world’s wealth and for nearly bankrupting the global economy. The two men who revolutionized US education couldn’t have been more different.
solar 32k 3d 3ds This detailed 3d model comes equipped with two superposed textures, one by day and other one by night with his respective lights. Easy to use, only it needs to move the solar light towards where it is wished and automatic in the shaded part there were activated the lights of the night cities. · Ultra high definition textures.· Ready to render.· Scene lights add.· POLY COUNT can be edited.· Land day/night textures· Atmosphere materials.· Standard Lighting settings (Deflaut render, Cloud Shadow map.)· 32k Textures (32000 x 16000)· Dynamic day/night shader.· High quality fast render.· The number of polygons can be reduced with turbosmooth settings. The scene contains: -4 Spheres·Earth Layer (Day Surface Map, Night Surface texture.) - 3 Textures:·Day Surface Map (32000x16000 px) (Tif format)·Night Surface Map (32000x16000 px) (Tif format)·Cloud Map (16000x8192 px) / Tileable. - 4 Materials No external plugins, deflaut render.
Ancient Sumerians In Ecuador: The Father Crespi Mystery… | Hidden Inca Tours In the Amazonian Ecuadorian region called Morona Santiago there is a very deep cavern, known in Spanish as Cueva de los Tayos (Cave of the Oilbirds). According to some researchers the true discoverer of the huge archaeological treasures of the Cueva de los Tayos was not the Hungarian Juan Moricz, but rather the Salesian priest Carlo Crespi (1891-1982), a native of Milan, Italy. Carlo Crespi, who arrived to the Amazonian Ecuador area of Cuenca in 1927, was able to win the trust of the natives Jibaro, and so they did deliver to him, over decades, hundreds of fabulous archaeological pieces dating back to an unknown time, many of them made of gold or golden, often masterfully carved with archaic hieroglyphs that, to date, no one has been able to decipher. From 1960 Crespi obtained from the Vatican the permission to open a museum in the city of Cuenca, where was located his Salesian mission. We have 2 major tours of Peru and Bolivia left in 2014; see details below: Full details Here
"EL COBRE ES CHILENO Y DEBE SER REFINADO EN CHILE" (Por Carlos Tomic E.) | Comité de Defensa y Recuperación del Cobre Chile exporta anualmente 1 millón de toneladas de cobre fino contenido en concentrados de cobre, equivalentes a 3 millones de toneladas de concentrados que se venden al exterior sin fundir ni refinar, y que son procesados en fundiciones y refinerías del extranjero, transformándolos en cobre electrolítico a cambio de importantes descuentos que se aplican al precio del cobre fino contenido. Pero eso no es todo. Si Chile no actúa con prontitud y decisión para corregir este cuello de botella que perjudica seriamente sus ingresos por exportaciones de cobre, dentro de los próximos 4 o 5 años se verá forzado a conceder descuentos de precio equivalentes a US$ 1.500 millones de dólares anuales, una vez que se inicie la producción de concentrados proveniente de nuevos yacimientos, más las ampliaciones de otros ya existentes. Actualmente es más rentable para el propietario de un yacimiento en Chile producir concentrados de cobre que cobre electrolítico.