swansont

Then your worldview is incredibly contrived. You are responding to movie-plot scenarios, rather than actual conditions that one could discern by gathering scientific data. And because of that, zapatos's description isn't really off the mark.

The field is zero inside of a conductor My recollection is that the process is energy dependent, so low energy photons are less likely to undergo the process (low energy means less likely to form virtual pairs, or the pairs last for a shorter time), which is a reason they use gammas in two-photon experiments, or that they only worry about the process under those conditions

Is the point here that people make stupid arguments? Why does one have to respond to them?

Extrapolation from what? “But it's still popular enough that libertarian and non-libertarian voters alike don't want to go as far as banning it outright.” carries with it the implication that that’s what you were suggesting But you haven’t provided any examples of this, and yet you are implying it’s widespread. Good lord, you watch too many movies.

There’s more than one sense of “field” and you may be conflating different ones You can talk about the concept of an electric field, and that field would be everywhere, but also that the value of the electric field is zero, so there is no field in a region. So “light propagates as a wave in the Electromagnetic Field” is that first sense, but not in the second, because the EM wave is the field. (I’m not prone to phrase things as “light propagates as a wave in the Electromagnetic Field” because I take the second approach: if E=0, there is no field) The CMB can be described as a photon field, but nothing propagates in it. That makes it sounds (to me) like it’s a medium, and it isn’t

iNow’s response to your proposal to ban driving, then. I was hoping for something more compelling than an obvious counter-argument to a ridiculous proposal. Germany no longer has the Autobahn? If they still do, I don’t think Europe has banned cars. I’ll admit it’s been a while since I’ve been to Europe, but I remember lots of cars. The transit was good, but I was in urban areas where that might be expected. Another pronouncement without evidence. We have not discovered this? I think where I work we’ve done really well figuring that out. Is that really a problem? Stealing homework? Oh, come on. Some teachers can carpool. Most could not. The ones for whom it makes sense were likely doing it already. So you just make it up?

So use the exact equation. The derivation doesn’t actually rely on the approximation, IIRC If you comply with the guidelines (provide evidence, etc.), go ahead. What are these variables? Mass, force and velocity? What if there’s no force, or the object is at rest? What does this have to do with mass-energy equivalence?

But the alternative has wide-ranging impacts, which you have not addressed. There are a number of people who opt to use a car instead of mass transit, so they have made this choice already. With COVID we’ve discovered which jobs support telecommuting and which do not. Do you have data on how often people try and do work while driving, or is this just more mythology? I don’t recall running across such appeals. Can you provide examples? Perhaps it’s in response to people trying to ban it.

Why won’t you answer the question? Is it because traffic deaths don’t even crack the top 10? So your presentation of “tens of thousands” looks like sensationalism when one realizes that ~2.8 million people died in the US in 2019? (also that traffic deaths have been falling) By focusing on deaths you conveniently ignore other impacts that matter to people and would factor in to any decision to drive, and also the difficulties of any transition to some other system. Which remains mythical at this point, because you haven’t done more than give a cursory description of an alternative. It also makes this an appeal to emotion, rather than facts. Your approach treats driving more as a luxury that can be given up rather than a necessity that would have to be replaced.

Out of how many total deaths? Put this number in context. Where does it rank in the different causes of death? Perhaps because most reasonable people understand that in getting from point A to point B efficiently, cars are the best solution, all things considered, and there’s no replacement that could be deployed in a reasonable amount of time.

They aren’t. The premise of your question is false.

! Moderator Note No, they are not. Math can be applied to many subjects, or be done independently of an application. We’re not going down this rabbit hole

invasive-feces banned as a sockpuppet of 13mh13

! Moderator Note No. -1 does not mean -16 , and 1/1e-4 is not equal to -1 ! Moderator Note You have to stop doing this. You asked a math question, so stick to math. If you have a physics question, ask it in physics. You’ve not clarified what you meant in the OP, so go ahead and ask a new question, but this us done, and you have to stop making up your own math, and stop acting like math and physics are interchangeable

Yes, and how does this have an effect on lensing? You can remove that bias. Anisotropy would remain after the correction

! Moderator Note These are excellent suggestions — — — — CuriosOne It’s impossible to properly address a question like “Why does x^2 depend on 2 input values?” when the statement isn’t true. The answer to “Why does x^2 depend on 2 input values?” is that it doesn’t. Try a simpler question, because you obviously have a more fundamental misunderstanding. “What if an input value was 3, does that make x cubed??????“ Makes no sense. Try a simpler question, because you obviously have a more fundamental misunderstanding. “Should x just be a rate of base 10???” Makes no sense. Try a simpler question, because you obviously have a more fundamental misunderstanding. Too much time is being wasted trying to parse the questions, and trying to diagnose the misconceptions, which, apparently, are legion.

No. You detect the photons coming from a particular direction. And notice that it’s the same as any other direction. As MigL said, it was a square horn antenna, which is a directional antenna, so it detects a signal from some (small) solid angle of sky.

! Moderator Note Note: sweetque and molbol2000 are the same person. Both accounts have been banned.

How is that connected to lensing? Lensing requires a source in a particular direction. The isotropy means that there is radiation from all directions. The signal to noise would be tiny.

! Moderator Note Complaints about the rules or actions of another site/organization in this way is an inappropriate topic for discussion here.

DraftScience has been banned. Frankly, sports fans, he used a phrase that's a no-no with umpires.

Because some devices are on, 24 hours a day. Not necessarily individual devices, but in aggregate, something is on, even at night. e.g. refrigerators. Wall clocks. Certain lights. Computers. Demand varies over the course of a day, but it doesn’t drop to zero at night. Continuous is not the same as constant.

! Moderator Note Your idea? Do you have something to post in speculations, that would comply with the rules, or are you asking questions? You can’t do both at once.

! Moderator Note Your topic is length contraction and refraction. In case it hasn’t been made clear: length contraction (a phenomenon from relativity) is not caused by refraction (an optical effect). Which of these two topics do you wish to discuss? (and no, light is not frozen)

I’m not sure lensing would be detected. The radiation is isotropic, and it’s not obvious to me there would be any wavelength changes.