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User: ChrisMaple

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  1. Re:Why diesel? on Biology Could Be Used To Turn Sugar Into Diesel · · Score: 1
    A modern automotive IC engine is about 30% efficient. Calling that inefficient is either ignorant or dismissive of the context of what is currently possible for an automotive power source.

    "Carbon oxide" without qualifiers means carbon monoxide, which is well supressed in modern IC engines. Carbon dioxide is quite beneficial to plants, as is heat, which carbon dioxide is claimed to enhance.

  2. Population on Biology Could Be Used To Turn Sugar Into Diesel · · Score: 1

    Best current estimates are we'll reach peak population in 2050, at well below 10 billion people. Until something very fundamental changes, we'll NEVER reach 10 billion people.

  3. Re:Kind of radical, but I hope it works on California Proposes to Ban Incandescent Lightbulbs · · Score: 1

    LED nightlights use a series RC (0.33uf, 1kohm typically) wherein the capacitor provides the primary reactive current limiting (about 15 mA) and the resistor is a surge limiter. Chopper type dimmers will cause a huge surge and probably burn out the resistor.

  4. Re:No room left for legitimate marketing. on 7 Ways to Be Mistaken for a Spammer · · Score: 1

    Marketing, in the form of "junk mail", saves me $100 or more a year. When I see something on sale that I want at a store I normally wouldn't visit, I go there and save money. Without this marketing, stores wouldn't bother to have sales, or I would have to visit the store each week, which costs time and money.

  5. Re:BCE on Ancient Village Unearthed Near Stonehenge · · Score: 2, Insightful

    CE and BCE have the advantage of not being religion-based. In paticular, AD is offensive, as Domini is the root for dominate : unsuitable for free minds.

  6. Re:Something doesn't add up... on Water From Wind · · Score: 1
    I've never been in a rainforest, but in New England and in the small coastal forests of southern California I've never experienced humidity condensing "from the air onto the leaves of trees". Leaves don't have enough thermal capacity to allow significant condensation. Generally, trees are a net draw of water from the soil. A few trees on a large lawn during a draught will cause the grass under the trees to brown first because the trees are using up the water.

    Occasionally walking under a tree when it's not raining you may feel moisture hitting your face. This is probably insect droppings.

  7. Re:Save US From Global Warming? on On Electricity (Generation) · · Score: 1

    Although the article is too governmental/environmental for my taste, an honest reading reveals proposals to cut some of the government interventions in the market. It's an honest attempt to evaluate improvements in a big, complicated system. I think his estimates are a little too optimistic, but note that he is predicting both economic and environmental gains for his techniques. This deserves serious consideration.

  8. Re:Diamonds are next.... on Intel, IBM Announce Chip Breakthrough · · Score: 2, Interesting
  9. Re:Hafnium? That's weak ... on Intel, IBM Announce Chip Breakthrough · · Score: 1

    Don't you mean Holmium, which is actually an element like Hafnium?

  10. Re:Simply Amazing ... Kill ALL patetns on Microsoft Copies Idea, Admits It, Then Patents It · · Score: 0, Troll
    Airbags were forced on the car manufacturers by the government before sufficient R&D had been done to make them safer than not having airbags. To say that delays caused by patents cost lives in this case is the exact opposite of the truth. To say that airbags and antilock brakes have saved millions of lives in the last 20 years is a gross exaggeration. Not a large number of people get killed each year in auto accidents, and of those only a small number have been or could have been saved by either device.

    These devices are expensive, and that expense can be quantified in the portion of a person's life required to pay for them. I haven't run the numbers, but there's a good chance that the expenses in terms of multiple partial lives exceeds the number of lives saved.

    Patents are an alternative to secret science, which has its own disadvantages in terms of technologies that are lost forever, technologies the dissemination of which are delayed (delaying the advancement of science overall), and the expenses of reverse engineering. It's a tradeoff, and a good one. Saying it's worse than slavery is just stupid.

  11. Re:I'm no scientist... on New Ice Age Theory · · Score: 1
    The model he crafted fit best current understanding of the structure and processes of the sun. After making the model he found that it agreed well with geological observations. Your claim that he did otherwise is an unjustified attack on his honesty.

    I wouldn't be surprised to find model has been fudged to fit the data, but there is no evidence is the article to suggest that this was done. It is unusual to develop a theory based on resonance that yields peaks that are not harmonically related. This is supportive of the author's honesty.

  12. Re:Cycle on New Ice Age Theory · · Score: 1

    RTFA. Approaching the start of a new ice age.

  13. Re:Real source on New Ice Age Theory · · Score: 1

    The jet stream's position varies daily. Even long-term averages are more likely to be an effect than a cause.

  14. Re:Socrates would be confused on New Ice Age Theory · · Score: 1
    "I concede I couldn't follow all the math"

    Actually, most of the math was missing. The math shown was basic assumptions and conclusions, with the intervening steps skipped.

  15. Re:Saftey? on The Replacement For the Battery? · · Score: 1

    It depends upon what's inside the device. Lead-acid batteries exploding aren't nice because sulphuric acid is dangerous. Capacitors with poisonous oil dielectric (illegal now, no longer produced) are dangerous. Most capacitors are less poisonous than most batteries.

  16. Re:Better hybrids on The Replacement For the Battery? · · Score: 1

    A 20 horsepower electric motor typically goes for $600 or more. Highly efficient electric motors are more expensive because they require more copper and better quality magnetics. Most electric motors require slip rings or commutators, which will wear out. (There are designs that use permanent magnet rotors or inductive coupling, I don't know it these are suitable for automotive use.) Batteries and controllers and low production quantities add to the cost of electric vehicles.

  17. Re:Miracles Required? on The Replacement For the Battery? · · Score: 1

    A quick google search gives ultracapacitor cycles as 100,000 or 500,000. 1 cycle a day means a 100,000 cycle device lives 273 years.

  18. Re:How is this projected? on MIT-Led Study Says Geothermal Energy Is Viable · · Score: 3, Insightful

    Quite to the contrary, 10% is huge and very significant, particularly because none of it is imported. Great advantages in balance-of-trade and not funding terrorism.

  19. Re:Although... on MIT-Led Study Says Geothermal Energy Is Viable · · Score: 1

    Your claim that we will be out of oil by 2050 is demonstrably false. But what's really silly is the idea that it'll be too late, so we shouldn't even try.

  20. Re:The problem with high clock is not just heat .. on Pentium 4 631 Overclocked to 8 GHz · · Score: 1

    Speed of light limitation is a problem. I've read that in the P4, Intel had pipeline stages that did nothing but compensate for propagation delay across the chip.

  21. Re:The problem with high clock is not just heat .. on Pentium 4 631 Overclocked to 8 GHz · · Score: 4, Informative

    The interconnect dielectric is usually silicon dioxide, with a relative dielectric constant of 3.9. This puts the propagation speed at about c/2.

  22. Re:Make money from spam without spamming on Spam is Back With A Vengence · · Score: 1

    The stocks used in spam pump-and-dump are usually thinly traded penny stocks. Your own purchases and sales will affect the stock price, making your virtual trades inaccurate. You'll need to see bid/ask prices and quantities, not just price history, to make a more nearly valid test.

  23. Re:handle on Engineering School Grads - Tradesmen or Thinkers? · · Score: 1

    Engineers need good lab courses, otherwise it takes too long to become an effective designer. Lab courses can be targeted for fast learning. Apprenticeships are not likely to be optimised for learning because the employer has to get some economic benefit from the arrangement.

  24. Re:handle on Engineering School Grads - Tradesmen or Thinkers? · · Score: 1

    Drones don't make the advances that make companies millions of dollars.

  25. Re:Another reason to ignore slashdotters on Political Bloggers May Be Forced to Register · · Score: 1
    "True patriots are supposed to go along with whatever the President says, remember?"

    A patriot supports his country over its enemies and opposes policies that will damage his country. There is no necessary relation between patriotism and the president.