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Everything posted by EdEarl
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oldsalt19, welcome to SFN. AfterViewer, welcome to SFN. Enjoy.
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I suffered from chronic pain for about ten years, and my physician sold me an Alpha-stim, which stimulates alpha waves and puts one into a state similar to meditation within a few minutes that reduces pain. After using it for a while I learned to meditate and control my pain without the Alpha-stim. It does not produce "a sequence of images, colors, patterns, or shapes." Its effect is similar to mindfulness meditation.
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While chimpanzees craft sticks as tools and use rocks as tools, no other modern animal, except man, combines stone and wood into a tool.
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IIRC, the idea of a multiverse comes from the fact that the Universe is expanding forever faster in all directions, as far as we know forever (towards being infinitely large). Since our Universe exists, there is no reason to expect it to be the only universe. If our Universe can expand infinitely, there may be an infinite number of universes. However, this line of reasoning does not mean there are other universes, and there is no way we can ever see another universe. Although, some scientists suggest that the distribution of the cosmic background microwave radiation suggests our Universe may have touched another universe about the time of the big bang.
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There is an event horizon receding at the speed of light surrounding us, which I think would not allow a standing wave across the Universe, but would allow longer wavelengths than twice the width of the universe.
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Really complex models, for example modeling the climate and weather of the Earth requires a program that use many different simpler physical models of events that occur over many decades of time. For example, modeling a storm requires modeling lightening, with electrical events that occur in picoseconds, fluid dynamics to model airflow and raindrops that occur in microseconds to days, electrostatics to model how charges in clouds affect airflow, raindrops, snowflakes, etc., the physics of crystal formation as water freezes into snow, sleet, or hail, and other things too.
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Are photon light particles, the same as a digital camera flash??
EdEarl replied to Iwonderaboutthings's topic in Physics
Pictures taken with flash probably have a longer exposure than ones taken outside, because the amount of light inside is less. Thus, your camera may move unless itis on a tripod or other solid surface. Such movement can be seen more in low light pictures than when there is more light (outside daytime). This kind of movement will blur pictures. -
Welcome Phen. Enjoy.
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More reason to eat your vegetables.
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IMO computers are a long way from being capable of doing such a simulation. When they are 100-1000 times the size of a cell, including power supply, memory, and network connections they will be powerful enough.
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I wonder how much current this material can conduct?
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For sure, demand for petroleum is almost 7 billion barrels per year (294 billion gallons) in the US. At least one company says they have produced 9000 gallons of algae oil per acre per year, which means about 326 million acres of land would be needed to replace petroleum. That is 100 times the acreage available in New Mexico and Texas that's over brackish groundwater. That's why energy conservation and diversification will be important in the future.
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Sparks tend to produce EMF at many frequencies, but most of it will be radio frequency waves, including microwaves. There is a bit of light emitted, perhaps some infra red, and maybe x-rays. The total power is W=VA, where W=watts, V=volts and A=amps. When distributed across all the frequencies of EMF emitted, the x-ray emissions would be very small. You could limit the input current to the Tesla coil, e.g., 0.1 amp, so that the output current would be Ax= 5.2v / 500,000v * 0.1a = 0.00000104a. Consequently, total power would be 5.2v * 0.1a = 0.52 W. With such low power, there will be extremely small amounts of x-rays generated. Most of the EMR emitted will be at the frequency of the multivibrator.
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Smile while you eat a few nuts, and you will be happier, too. They did not report a causal relationship, merely a correlation that is consistent with other similar studies. They did not report any specific nut as superior in this study.
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Among other things, not enough computer power and not enough knowledge of cell physiology.
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http://www.ted.com/talks/ramesh_raskar_a_camera_that_takes_one_trillion_frames_per_second.html Some researchers may find this high speed photography useful for their own projects. It makes possible some things that otherwise would be impossible, including seeing around corners...really. Watch the Ted Talk above.
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It would be fairly easy to build a small Tesla coil using a monostable multivibrator and batteries to feed the coil.
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This increase may make microalgae oil production competitive with petroleum diesel. There are many millions of acres of desert in the southwest with saline groundwater that can be used to grow marine microalgae. There is little rain in this area, which means these groundwater sources will deplete quickly if squandered. Fortunately, growing algae is best done in greenhouses or in photobioreactors that conserve water. If this development sparks the large scale production of algal oil, it will create jobs, reduce CO2 emissions, and stop the flow of dollars to oil producing countries. It would be a huge benefit for the environment and economy of the US.
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So where did that intelligence that you think created the universe, life and man come from? Did that intelligence create itself, or just pop into existence randomly? Why is it creationists cannot answer that question except by saying it was magic or it always existed? If your creationist intelligence can exist without beginning, why do you ask for a better scientific explanation of the beginnings of life? No one knows, this discussion is pointless, because it leads nowhere. Genesis obviously occurred because we can ask why and how, but we may never know the answer. Moreover, I doubt either side will change anyone's mind about how and why genesis occurred.
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People usually trust their parents or whoever cares for them as children, and they learn to trust the people their parents or caregivers trust. This trust is often secure whether the parent deserves that trust or not. Children who are battered often continue to trust their parents, and some children of Nazi death camp commandants denied to themselves for their entire lives that their fathers did anything wrong. Thus, blind trust is common, and it does sometimes get people into trouble. To overcome this kind of blind trust is not easy. One way is that a mentor gains the trust of a person, and teaches them to trust other people and things, a slow process It is rare for a religious person to make the jump to trusting peer reviewed scientific experiments. A more circuitous process is necessary, one that builds trust in the scientific process in a step by step process. Perhaps one should showing such a person how they already trust some scientific observations. For example, how can you teach a child that fire is hot and not to touch it. Light a candle an move a child's hand and yours near the flame until both of you can feel the heat without being burned. That is a scientific experiment. Explain enough simple experiments to gain the trust of a skeptic, then explain more complex experiments. I think the school systems fail to teach the scientific process because they do not start early enough and simple enough.
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It is one of the ones that are mutually exclusive.
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Welcome dsuyew, enjoy.
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Good article for computer science presentation in college
EdEarl replied to matt1195's topic in Homework Help
http://phys.org/news/2013-11-reveals-potential-breakthrough-technology.html http://www.sciencedaily.com/releases/2013/11/131112105034.htm -
Would gravity waves propagate slower than the speed of light, since Higgs bosons are massive?