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Everything posted by MigL
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The earth’s core (split from Does our moon affect Earth's core)
MigL replied to Luzephyr's topic in Earth Science
???? By 'we', do you mean you ? -
What has been done is the 'creation' of hydraulic gravitational potential in the form of hydroelectric dams. My proposal would be for a hydroelectric 'battery', which stores electricity by raising water to a higher gravitational potential, and then re-extracting the electricity when the water drops back down through a turbine. It could be as simple as a rooftop tank, to store electricity generated during the day by solar panels, and to recoup at night when the panels are not active.
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Is the universe really 13.7 billion years old?
MigL replied to Kurious12's topic in Astronomy and Cosmology
Have you not read any of the preceding posts ? Using the equations developed by Meghnad Saha in the 1920s, we can calculate the ionization state of a gas in thermal equilibrium from the temperature and pressure. All gases in the early universe ( mostly Hydrogen and Helium ) remained completely ionized down to a temperature of about 3000oK. In this state, the universe consisted of an opaque plasma, but once it expanded further, and dropped below this temperature, electrons were allowed to bond to nuclei to form atomic Hydrogen and Helium, rendering the universe transparent. We 'see' the glow of the opaque ionized plasma as the CMB radiation, but it is no longer at 3000oK, it is now at 2.7oK, a reduction of about 1040 times. We can then use your standard statistical thermodynamic gas laws, which relate temperature, volume and pressure, to conclude that the universe must have increased in volume by the equivalent factor of 1040 times, since the recombination era ( when atoms were able to form ) -
I like my idea better ... Use 'excess' electricity, when available, to pump water to an elevated reservoir, then run the water down through turbines to generate electricity when there is demand. Although there are pumping/generating losses, the 'elevated' water can be stored indefinitely, and won't 'run out' after 13 hours.
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The event horizon of a Black Hole can be viewed as an extreme curvature of space-time. A classical Black Hole will conserve mass, angular momentum and charge. And, as mass is equivalent to energy, those conserved quantities contribute to energy-momentum which produces space-time curvature ( gravity ).
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While this is the Politics section, it is still a Science forum. We would be better off not dealing in hyperbole.
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Clearly, JC is way over the top ... But Peterkin is not ??? The solution to most all of America's problems ( and there are quite a few ) is not to point fingers at the other ideological side, but to get your house in order. Your system of Government allows for people on both sides of the ideological debate to 'game' the system, and the polarization continues to build. United 'States' is clearly not working; they are anything but united. Thank you for the compliment and the agreement.
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There are 'deliberate indifference laws in most jurisdictions, that are extended to adults as well as babies. "Deliberate indifference is the conscious or reckless disregard of the consequences of one's acts or omissions. It entails something more than negligence, but is satisfied by something less than acts or omissions for the very purpose of causing harm or with knowledge that harm will result." Deliberate Indifference Law and Legal Definition | USLegal, Inc. Did you not see the last episode of Seinfeld ?
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I was explicating as how it doesn't, can't, and hasn't any. No such thing as inherent rights. Rights are granted by a society to individuals through laws and regulations. If we as a society, deem that babies have rights, then they do. If we deem a fertilized bunch of cells not to have rights, then they don't. The importance of good, and viable laws and regulations is most important, not whether it complies with the writings of a Constitution over 2 centuries out of date.
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Isn't that how this whole mess got started ? Previous administrations ( Republican ) packed the Supreme Court with politically influenced judges, who interpret ( or find ways to interpret ) laws according to political ideology, and not just the Constitution What happened here is that the SCJustices found a way to reverse the Roe vs Wade decision by claiming the Supreme Court did not have authority, and have left it up to individual states to decide. those idiots in Congress and the Senate need to pass viable laws, which stand up to Constitutional scrutiny, and are harder to overturn than simply withdrawing a previous decision by partisan SCJustices.
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I would agree that gravity was present before inflation, but the inflationary period is believed to be between 10-35 sec and 10-32 sec ( electroweak unification energies ). Gravity would have been the first to split off, at times much closer to Planck time, because it is at close to Planck energies that the four fundamental 'forces' seem to have equivalent strengths. This assumes, of course, that gravity is a 'force' which can be unified with the other forces. GR, although incomplete, seems to suggest it is not
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Geodesics determine trajectories. ( for massive and massless particles ) Unless other forces are in play.
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Not sure what you are after with this ? I know it is impossible to have a global Cauchy surface to describe all of space-time, but local surfaces are allowed. A Cauchy surface is a submanifold of the Lorentzian manifold defined by GR, and is usually interpreted as a time-slice of the 4Dimensional manifold, and is 'local' because it is defined by causal boundries and structures. I don't know what any of this means, and unless you explain it better, it reads as word salad. In GR, the geometry is the field. Each point of he field has associated infnformaion describing the deviation from flat, at that point. These deviations define the local 'curvaure', and geodesics, we call gravity. So, no, in GR graviy is not a force.
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I've heard of this on DSLR camera lenses that are stored in dark, humid conditions. If you can get at it ... Mild H2O2 ( 3-6 % )would kill the fungus. Mild acid ( vinegar ? ) will prevent its growth.
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If you click on the hyperlinks embedded in the partial quotes I provided from the two Wiki articles, it will take you to a further description. For example, in the quote from the Big Bang article the embedded hyperlink "universe expanded" will take you to another aricle describing how the intrinsic, metric expansion of the universe differs from an explosion originating at a central point. I think we on this forum, sometimes forget that we are not here just to boost our egos. We are here to learn, and pass on what knowledge we have, or gain, onto others.
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I'm sorry if we have failed you in your quest to understand photons and the Big Bang Theory. perhaps, read through these two articles, and ask questions ( don't make assertions ) about the things you don't fully understand. Photon - Wikipedia "A photon (from Ancient Greek φῶς, φωτός (phôs, phōtós) 'light') is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless,[a] so they always move at the speed of light in vacuum, 299792458 m/s (or about 186,282 mi/s). The photon belongs to the class of bosons." and Big Bang - Wikipedia "The Big Bang theory is the prevailing cosmological model explaining the existence of the observable universe from the earliest known periods through its subsequent large-scale evolution.[1][2][3] The model describes how the universe expanded from an initial state of high density and temperature,[4] and offers a comprehensive explanation for a broad range of observed phenomena, including the abundance of light elements, the cosmic microwave background (CMB) radiation, and large-scale structure." Lets take this opportunity to both learn from our mistakes.
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Are human babies the loudest in animal kingdom?
MigL replied to Danijel Gorupec's topic in The Lounge
"Are human babies the loudest in animal kingdom?" No, it only seems that way when you're trying to get them to stop. ( my nephew has a newborn baby girl, Sadie ) -
I agree!!! You contradicted your own previous statement. The full sentence was "The universe does not expand, nor can its contents shrink, linearly." IOW observations show that it expands, or contracts ( as you claim ), differently at different scales, ie not linearly. The fact that you have reading comprehension issues does not mean I'm contradicting myself. Approximately 100 MegaParsecs ( +/- 50 ), and depending on the distribution of its component galaxies. That is, at best, a pseudoframe. GR does not allow for a universal, or 'special', frame. I attempted nothing, merely trying to identify/clarify the mechanism by which you think this universal contraction could happen. You have, so far, offered up no such mechanism, so there is nothing to consider. Just rubbish.
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Either. "ASATs were generally given low priority until 1982, when information about a successful USSR program became widely known in the west. A "crash program" followed, which developed into the Vought ASM-135 ASAT, based on the AGM-69 SRAM with an Altair upper stage. The system was carried on a modified F-15 Eagle that carried the missile directly under the central line of the plane. The F-15's guidance system was modified for the mission and provided new directional cuing through the pilot's head-up display, and allowed for mid-course updates via a data link. The first launch of the new anti-satellite missile took place in January 1984. The first, and only, successful interception was on 13 September 1985. The F-15 took off from Edwards Air Force Base, climbed to 11613 m (38100 ft)[8] and vertically launched the missile at the Solwind P78-1, a US gamma ray spectroscopy satellite orbiting at 555 km (345 mi), which was launched in 1979.[9] The last piece of debris from the destruction of Solwind P78-1, catalogued as COSPAR 1979-017GX, SATCAT 16564, deorbited 9 May 2004. Although successful, the program was cancelled in 1988. On 21 February 2008, the US Navy destroyed the malfunctioning US spy satellite USA-193 using a ship-fired RIM-161 Standard Missile 3 about 247 km (153 mi) above the Pacific Ocean. That test produced 174 pieces of orbital debris large enough to detect that were cataloged by the US military.[10] While most of the debris re-entered the Earth's atmosphere within a few months, a few pieces lasted slightly longer because they were thrown into higher orbits. The final piece of detectable USA-193 debris re-entered on 28 October 2009." From Anti-satellite weapon - Wikipedia
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Others' ideas offend you, Dim ? It would be so much better if everyone in the world thought as you do. Intolerance takes many forms; you just displayed one by your characterization of others'ideas. And JC's claim was that the statement was pseudoscientific. It wouldn't fly in a scientific paper ( scientific studies of Covid vaccines list all side effects and anomalies ). But it may be valid as a news article. Been fun chatting; gotta go to work ...