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Janus

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Janus last won the day on October 21

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  1. The actual amount of bending of the light path passing by the galaxy is very, very, very tiny. To see this Einstein ring . we need to be the correct distance from that galaxy in order for the bent light to converge where we are. For example, we could use the Sun as a gravitational lens, but to do so, we would need to be 542 AU from the Sun, because light grazing the sun deflects light by just 1.7 seconds of an arc. Now consider that the galaxy bending the light is billions of ly away, and keeping in mind that just 1 light year is ~117 times longer than 543 AU. Just how much do you think the light passing the galaxy would need to converge on us? Magnitudes less than it does passing the Sun. Secondly, Astronomers, astrophysicists, etc. are well aware of the Relativistic effects that exist, and how to calculate them. If they were a significant issue, they would be factoring them in already.
  2. This is the difference between "proper" light speed (that measured locally), and the "coordinate" speed of light,( the speed of light at some distant point, measured by our local units of time and space). So yes, light passing say, by the surface of the Sun, would appear to be moving just a tad slower than c, as measured by us further out (Though someone at the surface would measure it as moving at c). How would this effect our measurements of interstellar or intergalactic distances? Insignificantly. The very slight difference this might make in any distance measurement is completely overridden by other factors that lower the accuracy of our distance measurements. In other words we don't claim that our distance measurements are accurate enough in the first place to worry about it. For example, take the star Betelgeuse. It is given a distance of 548 ly with an error of +90 to -49 ly. This potential error range is magnitudes larger than any due to a difference between proper and coordinate light speed.
  3. For the very reason that it gives NATO an reason to increase air presence in the region is why I have my doubts as to this being Russia. They are having trouble enough with Ukraine, why would they take an action that would only make things worse for them?
  4. The first argument is just a rehash of the old "Tired light" argument which has been dismissed because it is not consistent with observations. As far as Andromeda goes, No, it is not suspicious at all that Andromeda is approaching, as it is part of our local gravitationally bound group of galaxies. The gravitational attraction between these galaxies holds them in orbit around their common center of gravity. Galaxies are not evenly spread out, but are grouped in a hierarchy of structures; groups, clusters, super-clusters, with voids in between. It isn't until you get to the size range of the larger structures that the overall expansion of the universe overrides gravitational attraction If you had done any serious investigation into the subject, you would have learned this, and your lack of knowledge of it shows that you didn't really bother to do more than just scratch the surface of the subject before jumping to conclusions. If you are not going to go to the trouble of doing even a moderate amount of effort of gathering basic information, why should anyone else go to the trouble of taking your musings seriously?
  5. Some issues with your idea: It fails to explain why DM(Dark matter) is concentrated as spherical halos surrounding galaxies. Our own galaxy's DM halo only extends out to 210 thousand parsecs (compared to the 27 thousand parsec diameter of the galaxy itself). It is within this radius that the "extra mass" is needed to explain galaxy rotation curves. If the majority of light is contributed by other galaxies, then it would not be concentrated in a region around us (or any other galaxy.) But the vast amount of dark matter mass would be evenly spread out through the universe. Andwith this being the case, it would have no gravitational effect on individual galaxies' rotation. ( Mass evenly distributed throughout the universe has no effect locally, as the combined effects cancel each other out over "small"(compared to the size of the universe) regions. Put another way, for things to work the way we see them happening, the extra mass of DM has to be mostly clumped around galaxies, and not spread out evenly through the universe. And if that much light was concentrated in the region around galaxies, we would see it. Even intergalactic space isn't completely empty, and the little material there would scatter enough of that light to produce a visible "glow" It fails to explain why we have found some galaxies that seem to show little to no indication of DM. They produce just as much light as other galaxies, and are being bathed in just as much light, but do not behave the same. Then there are observations like the Bullet cluster, where we are looking at the aftermath of galactic collisions. Here we can use gravitational lensing to locate concentrations of mass, and have noted that after the collision, there is a region that shows a concentration of mass that is separate from any visible light source. This is what one would expect if the DM was separated from its parent galaxy by the collision. This is not something that could occur if DM was the result of the mass of light.
  6. It's not even the inverse square law that's meaningful, but the inverse cube law of tidal effects. Take a body like Mars, It has a gravitational pull on you, but it also has one on Earth, and since both you and the center of the Earth are nearly the same distance from Mars(when compared to the distance to Mars), the acceleration experienced from that pull is almost equal, and it is only the slight difference that could have any effect on you. This is the tidal effect. These types of tidal forces fall off by the cube of the distance. Given the mass of Mars, and it distance at its closest to Earth, a 0.2 gram mass at a distance of 100 meters would exert a larger tidal force on you than Mars would.
  7. From my limited understanding, the reason "run of the Mill" neutrinos have been excluded from the list of candidates for making up a major component of dark matter is that it would have altered the formation of the universe. That many neutrinos would have prevented the small scales structures from forming as early as they did. That doesn't mean neutrinos are out of the question entirely, there is the hypothesized "sterile" neutrino, which doesn't interact with other matter at all, except gravitationally. Some recent findings have suggested to its actual existence.
  8. In any terms that matter, he's already lost, and did the moment Ukraine didn't fall within a few days of the start of the attack. The action ended up having the opposite effect he wanted. It solidified NATO, and actually influenced two nations, previously reluctant to do so, to join. It exposed the Russian military as being a paper tiger( It has lost its position as being considered the third most powerful military, with other nations now in the running for that honor). Instead of strengthening the Russian Empire, it has crippled it. Even He were to finally prevail in terms of capturing Ukraine on the battlefield, all he will have done is have taken some ground. The major goals of the invasion have already evaded him.
  9. I'm wondering if it is capacitive. Placing your hand near it alters the capacitance, which sensed as a frequency change in the circuit. Touching disrupts the circuit. Just a wild guess.
  10. Another thing you should do from time to time is do a "Restart" rather than a "Shut down". I know it sounds counterintuitive, but Restart does a fresh reboot, While Shut down preserves a number of settings to speed things up upon turning the computer back on. If one of those processes is what is causing the problem, it will be carried over to when you turn the computer back on.
  11. Above is an image showing the relative sizes and distance between Earth and the Moon. Not only is the Moon a significantly smaller target, but there is a huge amount of space that allows for a comfortable miss of the Earth, without even coming close to the Moon.
  12. In addition, China's "support" of Russia only goes as far as what China sees as benefiting themselves. They would not be adverse to "supporting" Russia in an endeavor that would ultimately weaken Russia.
  13. It came too late to fulfill my childhood dreams of visiting the Moon.
  14. A lot of Republican leaders are going around ringing the alarm of " If The FBI can do this to Trump, they can do it you!" Of course, the the FBI could already have done this to the average citizen. That's not what bother them. It's that if they could do it to Trump, they could do it to them! They see it as an erosion of the protective shield created by being rich and powerful. It removes the power behind the words, "Do you know who I am?"
  15. Due to the Moon's tidal effect, the Earth's period of rotation increases by about 1 sec every 50,000 yrs. (in 50,000 yrs, it will take the Earth one second longer to complete a rotation.) As to affecting human's lives, It already does, to a certain extent. We have reached a point where accurate time measurement has become vital to a great number of fields. Because of that, the need for a standardized unit of time became very important. This is the second. For a long time, the second was based on the Earth's rotation. That is, until it became apparent that this wasn't a constant. The second was switched to be based on something known to be constant, and fixed on that value. The Earth's rotation still changed over time. Sure, it was only by microseconds a day per year. But the effect was accumulative. For example, imagine a clock that runs slow by one second per day. after 1 day, it will be late by 1 second, after two days 2 sec,... after 60 days, its behind by a full minute, etc. The same thing happens with the Earth, from the time we set the length of the sec to a fixed value and now, our Clocks(based on that sec) and the rotation of the Earth vary slightly Just a tiny bit each day, but it adds up over time. So, in order to keep them our clocks from drifting too much from the position of the Sun in the sky, every so often a "leap second" is added to our time keeping systems, to line them back up again. (kind of like resetting that clock that runs slow from time to time).
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