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swansont last won the day on March 21
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About swansont
- Birthday May 12
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http://home.netcom.com/~swansont
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Washington DC region
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Geocaching, cartooning
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PhD Atomic Physics Oregon State University
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Physics
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Physicist
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- Evil Liar (or so I'm told)
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Curvature versus Expansion: Both Relativistic Observations of Space
swansont replied to Maartenn100's topic in Speculations
Useful as an exercise, perhaps, but it’s not the universe we live in. Your opinions mean little; in science it’s the evidence you have to support a falsifiable idea Can we stick to the topic? You keep avoiding addressing the question of the connection of relativity to the expansion of the universe -
Curvature versus Expansion: Both Relativistic Observations of Space
swansont replied to Maartenn100's topic in Speculations
But we (scientists) are aware of relativity, so there is no difference in understanding. It’s a given that the measurement was made with our clock. And this has no impact on expansion. You could make the same flawed argument about any measurement affected by relativity, and yet GPS (for example) still works. You are overstating the impact of relativity; it does not render things unknown. It merely makes measurements frame-dependent, but with a known transform between frames. It's like saying that the fact that things can be written in both English and German means language has no meaning, as if one can’t translate between the two. -
Any time or length measurement will be the same, but there will be length contraction of the object, and it will experience time dilation. Two observers measuring the decay of muons, for example, will get the same answer for the half-life, but it won’t agree with the lab frame measurements. Without relativity you could not reconcile the discrepancy.
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Did contaminated fuel cause the Baltimore bridge disaster ?
swansont replied to toucana's topic in Engineering
I was reading that the protective mini-islands are called dolphins https://en.m.wikipedia.org/wiki/Dolphin_(structure) -
TFG or That Florida Guy? Either way, can the GOP win in 2024?
swansont replied to Phi for All's topic in Politics
Marilyn Lands’ victory in Alabama should also paint a picture. I expect the polling numbers to skew toward Biden once the campaign ramps up the ads showing TFG’s support for overturning Roe and the GOP’s plans make it national, and to get rid of IVF and contraception. -
Kelvin Klein. For your absolute unit.
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You do realize there are countries that are not friendly towards the US, right? So they might not be inclined to sell uranium to the US. Areas that were part of the USSR are currently big producers of uranium. Hard to cut off the supply to someone when it’s under their direct control How/why is that more ethical or acceptable? You failed to address this.
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Or spying on the subsequent Soviet efforts, or them sharing information. Once reactors started being built, information was available that wasn’t there during the Manhattan project. Theory became more useful, and less experimentation would have been required. e.g. knowing reaction cross-sections means you can model things rather than doing empirical studies to determine critical mass. Is starving and burning the population somehow more acceptable than using the atomic bombs?
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TFG or That Florida Guy? Either way, can the GOP win in 2024?
swansont replied to Phi for All's topic in Politics
“This page displays the current 270toWin Polling Average for each state” Average does not imply all Several national polls have Biden ahead https://projects.fivethirtyeight.com/polls/president-general/2024/national/ Also: it’s March In March 2016 there were polls that had Clinton over Trump by 10 points or more And: polls are not votes. -
Curvature versus Expansion: Both Relativistic Observations of Space
swansont replied to Maartenn100's topic in Speculations
We measure it with our clock, since we’re doing the measurement. Most clocks in galaxies run at about the same rate, unless you’re near a black hole or moving at a significant fraction of c. (it’s been estimated that the center of the earth is younger than the surface by ~2 years. A pittance compared to 4.5 billion years) So what? We know this. We’re not comparing notes with any observers in other reference frames. How, specifically, does this tie in with expansion? I don’t see how your conclusion follows. -
Guille Yacante has bid us farewell. We’ve locked the door, just in case. We don’t need any more unsubstantiated claims posted in multiple threads on the same topic but placed in inappropriate sections.
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Yeah, independent creation happens all the time*. Especially on a smaller scale than calculus. “you stole my idea” is pretty common, too *I’ve got a cartoon sketch about dinosaurs watching a triceratops and claiming to be tricurious, and Colbert made a similar joke on his show a few years later. Nobody stole the idea from me, and it’s a fairly obvious play on words. Not the only time something like this happened to me.
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Then the proportionality only works at T, and if you are considering particles moving away from each other, more than one time is involved. Why is it you can’t just admit the original statement was incorrect? You’ve already stated that the relative velocities are constant over time. Why the contortions to try and preserve the statement about varying with length?