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Janus

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Janus last won the day on April 6

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  1. I'm going to focus on this, Others have already explained that you would see the both the Moon and smaller Sun as they were ~8 min prior to the moment you see them. But, just because you "see" them that way, doesn't mean they are in a "different time-frame" from you. So, for example, if the Moon has large clock face on it, and you, from your position, see it reading 11:52, while your clock reads 12:00, you can't conclude that is is 11.52 on the Moon when your clock reads 12:00. The Moon clock ticked off 8 min in the time the light reflected off it left. So, When you see it read 11:52,
  2. I've seen a few YouTube videos discussing its release. It seems that the PC requirements for installing it are quite stringent. Only pretty recent CPUs are compatible. (Microsoft has release an "approved CPU" list). MS had also put out a "Health Checker" do you could see if your PC was up to the task, But the backlash from it telling so many people that their PC couldn't run Windows 11 caused them to pull it. Out of curiosity, I checked my CPU against the approved list, and it was on it (my PC is less than a year old), But like @StringJunky, I'll think I'll wait and see.
  3. This is what the Moon as a mirror would look like viewed from the Earth with a telescope. That small bluish dot in the center is the Earth's reflection.
  4. Hal Clement wrote a short story dealing with telepathic aliens communicating with Human. The basic outline was a spaceship containing renegades from their own race, has to do a forced landing on Earth. They are a telepathic race. They land in a remote place where they contact a single human, and they spend a good time learning how to read and interact with his mind. (The idea being that once they learn to do this they can use it to control all humans. And their plans were not good. Once they succeed with this one person, they try and implement their plan, only to have it fail.
  5. Since a TASER doesn't use the Earth ground as part of its circuit, touching a metal pole while being hit by one will make no difference. If the TASER hits the pole: For one thing, the darts won't stick and would glance off, and even if they stuck, the circuit would be completed through the pole and not the person touching it, so they would not be effected by it.
  6. Your last fact is open to what definition of "day" you use. You are using the sidereal day or the rotation relative to the stars. However, the usual use of "day" refers to the Solar day which is the time it takes for the Sun to go from noon to noon. Since Venus' rotation is retrograde (its rotates in the opposite direction to that it orbits the Sun, it's Solar day is only 116 day, 18 hours long.
  7. The disparity between the clocks at any given moment fully depends on the the Frame of reference from which it is being measured. There is no "universal, actual" disparity. The importance of bringing the clocks back together is that this produces a situation where all reference frames agree on the exact amount of disparity between the clocks. In other words, all frames agree that the clocks read the same when initially separated, and all frames agree on the difference between the clocks when reunited, but they will not all agree as to how the difference between the clocks accumulated d
  8. I just recently saw a video where someone examined an "experiment" done by FE proponents, Dealing with looking across a large body of water at a building. They worked out how much of the building "should" be hidden by the curve, and then pointed out that more of the building was seen than predicted by there being curvature. The examiner pointed out two things: 1. They failed to take into account refraction( as mentioned in earlier posts). 2. The ground floor of the building was not itself at water level, but several yards above it. Once these were taken into account, the am
  9. By what experiment? Keep in mind that this statement refers to the speed of light in a vacuum ( and not while traveling in a medium), and measured locally ( not its coordinate speed)
  10. Sorry, that makes no sense. In a chemical explosion, the energy comes from the rearrangement of the molecular bonds. The difference in bond energies between the starting and resulting compounds is expressed as an increase of kinetic energy of the resulting compounds. These bonds involve the outer electrons of the atoms E=mc^2 would only come in if you were to very carefully measure the mass of the bomb before detonating, and were able to contain all of the resulting bomb material, let it cool back to the initial bomb's temp and then measure it ( and only it). Then you would notice
  11. Antimony density as a solid: 6.697 g/cm^3. As a liquid: 6.53 g/cm^3. Another way of expressing this is that 1g would have a volume of 0.15314 cc as a liquid, and 0.149320 cc as a solid. Since the mass would remain the same while going from liquid to solid, it would take up less volume after doing so. Bismuth, as a solid has a density of 9.78g/cm^3 as a solid, and 10.05g/cm^3 as a liquid. It's density goes down going from liquid to solid, and this its volume per unit mass goes up.
  12. First amendment of the US constitution: Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances. So the "right of Freedom of speech" pertains to the limits the US government has in this manner. It does not matter if the term "freedom of speech" already existed or who first coined it.
  13. The period over which tidal locking would occur is highly sensitive to the distance between the bodies, and varies by the distance to the power of 6. It is less dependent on the mass of the primary. The relationship ( assuming all else is equal) is T = a^6/M^2 So, if we take a very luminous red dwarf like Lacaille 8760 with a mass of 0.6 that of the Sun, and a Earth equivalent position in the habitable zone of 0.268AU, you get a time period for tidal locking of roughly 1/1000 of the the time it would take for the Earth to tidal lock to the Sun. For a smaller star like Proxima Cen
  14. That was the argument put forth by Galileo against the Aristotelian model of gravity that posited that heavier objects fell faster than lighter ones. It was not meant an argument against gravity itself, but against that particular model. He wasn't saying that gravity didn't exist, but that it didn't behave like Aristotle said it did. The model for gravity that replaced the old one didn't suffer from this feature.
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