Ophiolite
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BBC News 24 on TV BBC Radio 4 morning news with John Humphreys and six o'clock evening news, both when commuting. The Economist for in depth reading The Herald-Tribune when I am travelling Internationally http://www.spacedaily.com for astronomy/astronautics news Local on-line papers for a different perspective on International Events. e.g. The Houston Chronicle for a take on current oil prices; La Stampa for an Italian view on the Pope's funeral; etc
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What is the air pressure? What is the carbon dioxide pressure? Is that enough of a hint?
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I am wholly opposed to censorship. One of the prices of freedom is that people are free to be stupid and tasteless. It is a price I am happy to pay because I can generally navigate around stupidity and tastelessness. We do need to provide 'mechanisms' that protect children from the plethora of porn (or cornucopia of copulation, if you prefer), but censorship should not be one of these mechanisms.
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Has polar ice been discovered on Mercury?
Ophiolite replied to vertigonight's topic in Astronomy and Cosmology
If it does exist it has nothing to do with the slow rotation of the planet, but to the fact that in deep craters in the polar regions the sun never shines. The same mechanism (or more correctly absence of a mechanism) is repsonsible for the possible polar ice trapped at the poles of the moon. Note, however, that the attempts to detect this by crashing a probe into a polar crater on the moon and looking for the spectrocsopic signal of water tuned up negative. This must reduce our assessment of the likeliehood of similar ice existing on Mercury. -
As a consequence the object that has provided the additional velocity will now rotate very slightly more slowly. In practical terms we could slingshot spaceshuttles around Jupiter five times a day for the next thousand years and still not be able to detect the this reduction, but it would be there.
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Europe has the longest coastline relative to size of any continent. This encouraged skills in engineering (e.g. shipbuilding) and science (e.g. navigation). It promoted the development of trade and hence of Empire. It's back to swanson's geography.
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Come now, you don't know me that well yet.
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Is Mercury in 3:2 Orbital Resonanace with Venus?
Ophiolite replied to vertigonight's topic in Astronomy and Cosmology
Unless its orbit has changed since I posted this answer to your earlier question on Mercury - http://www.scienceforums.net/forums/showpost.php?p=148946&postcount=4 - then, yes. -
whats the difference in an atmosphere and winds?
Ophiolite replied to vertigonight's topic in Astronomy and Cosmology
Technically it may be useful to make a distinction between winds and gross atmospheric motion. Jupiter's winds move in every direction: consider, for example, the Great Red Spot, which is a giant vortex. However, the atmosphere, on average moves from East to West. -
That's interesting. My experience is the reverse. On an age adjusted test when I was eleven I scored 108. As part of a work related battery of tests when I was 28/29 I got in the low 140s. I don't believe I got smarter, I think I got motivated.
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It's part of the ABP [Anarchaus BioDiversity Program]: increased speciation through the application of environmental extremities and accelerated mutation rates.
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Two points: 1. What is your point? Do you want us to debate these views, agree with them, become informed? It would be helpful to know how you, as the thread initiator see the thread developing? 2. Central to McDonald's argument is the belief that ethnic differences are real, consistent, genetic and important. Since he is wrong on almost every count I shall be placing his arguments in the file marked R for Racism. I'll be happy to debate the issue with anyone who has the impression that what he is saying makes sense or is based on credible science.
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Yes. Broadly. I don't believe we have a good handle on the impact of cultural and educational differences.And, to state the obvious, while success also varies with intelligence it is not the only, nor necessarily the most important factor at work. Around a five, unless I'm trying, when I hit nine with ease: I know the rules, I just don't like the game.
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Posts to General Discussion don't add to your post count, because, as Hellbender explained, General Discussion means exactly that. That way your post count reflects your quantitative contrbution to the core forums.
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Very good point. I'll claim the spelling of "surgery" distracted me! One out of eight conceded.
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powered flight: Not the Wright's but Gustav Weisskop a German incandecent bulb: In 1860 English physicist Sir Joseph Wilson Swan, produced his first experimental light bulb using carbonized paper as a filament. electricity: Ampere, Priestley, Ohm, Joule, Faraday etc, all Europeans telephone: A.G.Bell (Scottish) motion pictures: Augustin Le Prince's 'movies' preceeded Edison's kinetoscopes traffic lights: installed outside the House of Commons in 1868 assembly lines: established in Venice for construction of ships open heart surgury(sic): Christian Barnard (South Africa) Sorry. No prizes there. Non-Americans were first in each instance.Try again?
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Consult Robert Mugabe.
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Cryptozoological Evolution
Ophiolite replied to noz92's topic in Evolution, Morphology and Exobiology
Forget amphibians and reptiles. Evolve them from fish and you can just convert another set of fins. -
The relative age of the surfaces of the Terrestrial planets (in which group I include the moon, Io, Gannymede, Callisto and Europa) can be estimated from the density of cratering. Dating of lunar samples has enabled such ages to be accorded absolute numbers. On that basis the surface of Mercury, that we have seen, is around 4 billion years old. We have only seen close up about 50% of the planet. I expect some large surprises when we see the other half.
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Does Mercury rotate 88 times per Orbit?
Ophiolite replied to vertigonight's topic in Astronomy and Cosmology
No ed. That is incorrect. It rotates three times in two orbits. It is tidally locked to the sun in that resonance pattern. -
Iron is an important constituent of many of the major silicate minerals, which in turn constitute the greater percentage of igneous rocks (from which all other rocks are ultimately derived). Examples include the olivines, pyroxenes, amphiboles and micas, all of which have iron rich members. The greater part of the iron differentiates out and sinks to the core, but iron is pretty common, so there's a lot left over.
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Google "mercury's surface" age