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Everything posted by Rhiaden

  1. Passed my semester project exam, got an A despite only having 2 hours sleep and being completely braindead and gibbering incoherently

  2. I like most stuff, but my preference is for rock/metal of most genres. I tend to go in phases, had a big rock opera moment recently, where I was into Avantasia etc, I am writing my project at the moment, so busy reading loads of papers, so listening to Vivaldi as I find it helps me think, and then Linkin Park, Metallica and Iron Maiden to let off steam between writing sessions. I also have a thing for really cheesy power ballads, and a bit of an addiction of Alice Cooper "Last Temptation" (This comes under Rock Opera addiction I think) I am a lyrics person, the melody is less important. I do have a thing for Trance for relaxing, which explains my interest in vivaldi apparently My boyfriend told me to listen to Mozart to study, but I never liked him, even when I used to play the piano, so went for Vivaldi, which my boyfriend claims is "Classical Trance or Techno"
  3. Its from April 2007 I think, so just before AR4. I am on a laptop atm, so can't watch it, but will look later. According to the info I could find online (Infowars.com etc), it includes the Willie Soon and Sallie Balinuas interpretation of data which if I remember was the Climate Research journal paper which lead to the resignation of a load of the editors. I will take a look at it later today hopefully, but my initial search of sites where it is recommended does not leave me with a good feeling about its accuracy.
  4. If it is the Christopher monckton documentary, there is a response by John Abraham that is worth watching
  5. Isnt the moon moving away from the Earth?
  6. Usually you have to take very high doses to get toxic effects, any excess is, in the majority of cases, excreted out. For example, it is quite easy here to get vitamin D supplements with many times the recommended dose (30mcg vs the RDA of 5mcg), I get these on prescription once in a while when my levels drop low due to winter, red hair + freckles, and staying indoors due to bad weather The majority of vitamins are water-soluble, and so any excess is removed in urine. Fat soluble vitamins are usually where you would have a risk of toxic effects as these are more easily stored. For the majority of people, there is no need to take multivitamins as it is fairly easy to get your required amounts, even on an "unbalanced" diet. I do take a multivitamin due to my very restricted diet, although my blood tests usually come back fine (with the exception of Vit. D mentioned above), so it is more a peace of mind thing for me, and I suspect for many people. I only do this in winter, as my diet in summer is much higher in fresh fruit and veg content. The levels at which toxic doses occur are also very high compared to daily intake, if you take for example vitamin C, the RDA is 90mg, and the upper limit is 2000mg, some of the B-vitamins have lower ratios if I remember. More common side effects are things like diahorrea, especially from supplements with iron. This link has the upper limits, effects, and cases each year: Vitamin toxicity
  7. It is worth checking this book out: Why does e=mc2, and why do we care Goes into depth with regards to all things Einstein related, including proofs with minimum mathematics, and explains the concepts of matter, speed of light, space-time etc in very easy to get to grips with (without having a patronising tone) terms.
  8. I am not from the US, so unsure how your Majors work over there, but it sounds like Organic or Analytical chemistry would be of interest to you. Check this site out for different types of chemistry and career information: Careers in Chemistry
  9. Rhiaden


    If you have forgotten the basics, Wiley publish some "Teach yourself Calculus" etc books
  10. Thanks! I was looking for that, but couldnt find the site!
  11. The thermodynamic meaning of entropy is a irreversible thermodynamic process. The simplest way to look at what your instructor has asked you is to consider what you are looking at with entropy. When calculating the change in entropy for a system, you are looking only at the initial and final state of a system When you talk about work in a thermodynamic balance equation, what are you describing in regard to the state changes? This link might also help Thermodynamics Entropy wiki Also try this one: Entropy & Thermodynamics Sorry for the obscure answers, but I cannot think of how to explain it better without giving you the answer Hopefully someone else will be able to do it in a simpler way than I have
  12. I have seen all his stuff, along with Nassim Haramein, and most of the others in those schools of thought, my other half is very into those vids and theories.
  13. If I remember, the methane is stored in Methane Clathrates under the ocean floor, these are very unstable, and sensitive to temperature and pressure. One of the issues with extracting these methane resources is that once they are brought up to a warmer temperature with lower pressure, the gas has a tendency to expand rapidly. In the confined space of a pipe, this is potentially explosive (There are videos out and about showing this). The methane clathrates stored under the ocean floor are one of the uncertainties in climate feedback. The temperature at which these clathrates become unstable is still unknown, and the quantity is also an unknown. Largely it exists in a region known as the Gas Hydrate Stability Zone. This is sediment where the temperature is cold enough to keep the methane within the clathrate structure. This zone is relatively shallow, in that it only extends a few hundred meters below the ocean floor. Along with the bermuda triangle, Methane is also suspected as the cause of ocean floor collapses, including one off the coast of Norway several millenia ago.
  14. Thanks! That was just what I was looking for, just couldnt get the search term correct.
  15. Hopefully this is a fairly straightforward question: I am currently writing on Solar radiative output, and have run into a term several times that I cannot find a definition for, "Centre-to-limb radiance variation" f (μ, λ) If talking about total solar irradiance as measured by a radiometer, I am figuring the centre is the centre of the Sun, however, I cannot find an answer as to whether the limb is referring to the range of the radiometer from the centre, or whether it is referring to the centre to edge of disc radiance variation in the direction of the radiometer. Any help is muchly appreciated as those 5 words are driving me crazy at the moment!
  16. Asking why is good , but for example, in the example I gave, I know it will take me about 4 hours working backwards to understand how to put the equation together, which I will be doing later. Most textbooks for physics assume you know how to manipulate the equations already, which is an issue for me, but it doesnt take too long to learn the rules, once you figure out what they have done to one equation you can easily see it every time it is done. If you take the foundation course they cover the maths you need anyway, so you dont end up in the situation I am in, trying to keep up with the maths which everyone else in my class knows already, and learn the physics at the same time. Send some enquiry emails over to the Unis you are interested in, worst case is that you will find out what evening classes you need to do etc in order to get into the courses you want
  17. For the carbon-14 question, make sure you understand what is meant by half-life. Half life is the time for half the quantity to decay.
  18. Number crunching is just down to rules, you should see how many times I randomly subtract from one side of an equation, as thats the only rule I remember at the time! It suddenly clicks, although, I am a bit geeky, so I have a 2m x 3m whiteboard in my living room which usually has rules of algebra that I need to remember on it, along with random other equations. I found calculus really impossible in calculus class, until I took environmental biology, and had a context to use them in, then it suddenly made sense all at once. My maths professor says it is just like a language, if you dont use it for years you forget it, but it is still there in your head, buried underneath episodes of CSI Miami and Discovery channel documentaries! One thing I find handy for example: I have just been doing conduction of heat through a composite material for tomorrows homework, and it had in the text "Solving this equation for T, we find........" and I had no idea how they manipulated the equation to get the new one, so I just accept while doing the problem that that is how you do it, then afterwards I hit the whiteboard and the internet to figure out how you manipulate the equation.... I am not that geeky, honest!
  19. Dont be put off by the length of time since you last studied I last studied in 1996, when I was 16, which was also the last time I did any maths (As you know, maths isnt used much in Admin). It was a bit wierd to get back into studying, but it didnt take long. You can also get some handy books from Wiley, they do a range of teach-yourself books, I just picked up their Algebra and Calculus books as I have completely forgotten all the rules for equations. There are also some really good online tutorials, both in text and multimedia.
  20. Well, what age do you qualify as a mature student in the UK these days? Remember entry requirements for mature students are different. (If I remember, its around 21 in the UK) I managed to sneak in here in Denmark as there are 2 ways of getting into Uni here, if you dont have the qualifications, you can write a letter of motivation (this usually applies to mature students). There is also the option of doing top up classes in maths/physics etc to bring your grades up to the required level, usually you can do short courses to get you A levels if needed. Also, a lot of universities do supplementary top up courses....usually these are called "Foundation Courses" like this one at Leeds: Physics Foundation I would suggest maybe contact leeds Uni as a first option, talk to the relevant faculty, and see how you can go from there. I am quite lucky as I am doing a 2 year Basic Course in Natural Sciences, which basically includes any classes I want from a list each semester, and each subject has a specialist class you need to take in order to move to the degree year in it, and also physics, maths, biology and chemistry have classes to top up your knowledge, so I am doing supplementary physics (Thermodynamics, Classical Mechanics, Electrostatics etc) this semester, and 2 semesters ago I did introduction to calculus and Maths modelling. These are not compulsory, and I can elect to skip them completely and just take the special course in physics if I want, but it is a good way for me to pick up on the college stuff I didnt do, and the ECTS are handy Once everyone completes the 2-year course (4 projects, 8 courses), they select 1 or 2 subjects to take for their bachelor year, so I am just collecting as many special courses as I can so I can have a wide choice in my final year.
  21. hehe, I did 10 years as an administrator, so you have my sympathies! uni was something I always wanted to do, but stuff always got in the way. You can do loads of things with geography physics, from weatherman on tv through to research with scary looking equations to do with climate, icecore measurements, storm chasing stuff, seismic wave calculations, all sorts of scary stuff with satellites etc. Its kind of hard catching up on the maths and basic physics as I didnt do college, but its a lot of fun!
  22. Hi, I am from the UK, but now living in Denmark. I am a mature student (managed to sneak into uni just before my 30th birthday), studying a bachelors in Physics and Geography, planning on a masters in Atmospheric Physics. I was originally going to do environmental biology and geography, but after several semester papers on atmospheric effects, I have found my interest lies more in that direction. After my studies, I want to do field based research, not sure what specific area yet, but I am very much a getting my hands muddy sort of person. Outside of clouds and thunder etc, I am interested in volcanoes, glaciers and other types of wet and wild natural occurences, online gaming, and cheesy science series on TV.
  23. Cosmolearning Lectures and documentaries on different subjects Google video is one of my go-to sites, for lectures on a ton of subjects, my favourites being the amazing MIT lectures by Walter Lewin
  24. They are conceptually a good idea, however, once the original species has been removed from the ecosystem, the system adapts to the removal, and overtime changes, predators that are lost are replaced etc. If it is a reintroduction after a short time, it is more viable in my opinion, however, when speaking of reintroductions after decades or centuries, you are effectively introducing a foreign species. Short term reintroduction can also fail, it depends on how swiftly the ecosystem responds to the change. If the species that was removed is a key part of the chain, especially at the base or top of the local food chain, then the system will replace them rapidly. Middle tier species may take longer to be replaced as there are likely to be others in the system that can move in. A key example of short term loss appearing irrepairable is cod on the grand banks in Alaska. The species collapsed due to overfishing in the late 80s, early 90s if I recall, and although a moratorium was imposed on fishing to allow the stocks to recover, as yet, the levels have not started to increase again. Of course, there are always many reasons for lack of recovery. One suggested reason is that what is now occurring is that fish that were previously the prey, are now feeding on the cod while they are still at the egg or early juvenile stage, therefore restricting the growth of the population. Previously, the numbers of this species would have been kept low due to predation from the cod, however, with the removal of the adult cod population, the prey population was able to grow, and the hunter is now the hunted, as the saying goes. From a personal view, I would love to see reintroduction, for nostalgic purposes, but, for the reasons given above, and also because of the implications of introducing what has become a foreign species into a population, I am much more in favour of preventing the eradication in the first place.
  25. I hope it is little green men, as I voted for that option in the poll!
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