Bender

Why do so many religious people need to belief this? Are they ashamed of their faith? If they are not, why do they project it on those who have none?

My German isn't great either, but I guess there is a scintillator inside:

Let's focus on this instead of bickering over a confusingly worded sentence, which isn't really relevant (for the pressure it doesn't matter whether the water is liquid or not).

The difference is that nobody beliefs in the former. Neither does anyone belief that it came from nothingness. I have no clue where you got the pure chance thing from. I don't think anyone beliefs in that either. None of your assertions about what scientists say are actually what scientists say. Perhaps you should listen more to scientists.

Skiers know all about it. Spiral fractures can be nasty.

There is nothing special about twisting. Pulling breaks everything. Shearing breaks everything. Squashing breaks anything... Twisting is nothing but shearing, but around an axis. You'll notice the fractures always spiral in a 45 degree angle.

It also depends on the spectrum of the sun and on the selective transmissivity of the atmosphere. UV has a higher energy per photon than visible wavelengths, but a lower Intensity, because the sun emits less of it and the atmosphere blocks a large part of it. Here you can see the result. The largest intensity is in the visible range, which is no coincidence, since we evolved to be most receptive to the most common wavelengths.

Behold: The vapour pressure of water at room temperature is 0,02 bar, so if you inflated your car tires inside with 100% humidity, and then it all freezes, that would be your pressure drop. On the other hand, a decrease in temperature from 293 K to 248 K , with a tire pressure of about 2 bar, will result in a pressure drop of over 0,3 bar (ignoring shrinkage of the tire) I don't think humidity is your problem.

Actually, the load-dependance of the tire pressure is pretty small. It is the contact area with the ground which is roughly proportional to the load. The volume of the tire, which is inversely proportional to the pressure, changes much less; certainly less than the accuracy of the average manometer.

Graphite is a (much) better heat conductor than your material, so it would have to be a pretty thick layer to insulate the material against the heat. Perhaps you could look at what they use to line steel ladles.

It depends on the reinforcement. Do you have any idea about which steel bars are inside, and at which position? Do you have any background/education on mechanics/strength of materials/bending of beams under load? The 3D scenario is relatively complex to calculate, but there could be online calculators once you know the stiffness matrix of the ceiling. A much easier first approximation for the lower boundary would be to ignore two sides and approach the problem as a simple clamped beam. This belongs in engineering.

Right. Never looked at it that way, since 75% is the number usually given. (Of course, neither number takes dark matter/energy into account)

Ideal gasses all react exactly the same way to temperature variation. In what way does either nitrogen or air deviate enough from that to be significant? Perhaps the increased leakage is the reason for that advice. Yes, there is a subgroup of those who spend the additional money for whom it actually makes a difference. The point is that it is not because people spend money on something that it actually makes sense (for them).

About 75%

Using air requires me to pump my tires about twice a year, an inconvenience I can overcome. Sounds like people using gold plated wires for their audio or ceramic bearings in their bike: sounds fancy, you can brag about the money you spent on it, but it hardly makes a difference.

We are the natural processes in our brain. There is no indication that there is anything about us beyond these natural processes. This means there is no difference between us making a decision or the natural processes making a decision, because those are simply the same. There is also no conflict with free will. If we are determined (and there is no reason to assume we are not), we are determined to choose the things we want to choose. Our decision are the outcome of processes in our brain that take our preferences into account.

In the original thought experiment, the cat is simultaneously dead and alive, which is absurd under Copenhagen (which was, and possibly still is, the most prevalent interpretation). However, when the thought experiment is extended outside its original scope, it leads to the many-worlds interpretation, where the cat is indeed both dead and alive, but in different universes (or states of this universe). In that case, it is not really absurd, but a great topic to discombobulate people. I have the experience that people (even atheists and materialists) can have a hard time accepting the possibility of different versions of themselves . The reaction of my students when I touched this subject was always neat.

The only advice I can offer is point to CES material selection software, which has a huge material database.

It would be much easier indeed. (Metric units would be as well :)) But before plastic deformation, there is elastic deformation. For high strength steel that can be as high as 1% (yields stress of 2000MPa / Young's modulus of 200GPa), and for nitinol up to 8% (with very nonlinear stretch curve).

Is this some kind of weird imperial unit thing, or are you planning plastic deformation? I wouldn't call it common to stretch a 1 meter metal bar to 1,4m length.

Elongation of 8%? I know of only one metal that can do that: the superelastic nitinol, a shape memory alloy. Its yields strength is below your requirement and, since it is an alloy, its melting point will be very near to your 1500K. Perhaps other, less common, superelastic alloys are stronger, but I doubt they'll meet your specs. Even these superelastics have pretty short lifetimes at 8% elongation at room temperature. Lifetime is usually not expressed in hours, but in number of cycles (unless perhaps the AlF is the bottleneck, but it doesn't even need to be considered to decide that what you want doesn't exist).

Joking aside : if it is filtering you want, the ground/chassis should do. If it safety you want: ask someone who knows about the regulations and best practices, not some anonymous dudes on an internet forum. I'm sure one of your supervisors or professors can help.

I'm afraid you have mistaken a science forum for a science fiction forum.

To make calculations, it doesn't, except perhaps to figure out the best approach to the problem at hand (in which case manyworlds is of little help since all the excessive states are discarded anyway). It only matters on a philosophical level when trying to figure out QM and trying to fit it into a world view.

I don't see how you reached that conclusion. I guess it depends what you call a "different universe". If your states join the superposition of the cats states (myriads of them, before someone starts nitpicking about two states again), you would be functionally in a different universe, because the different states of you would be entangled with the different states of the cat. In other words: for each state of you, there is only one state of the cat. There is no reason to assume these different states of you are actually in different universes, even if for all intents and purposes, they might as well be. It would be silly for an interpretation to not include something basic as LCAO, because then it would not be an interpretation but a hypothesis that is disproven by experiments.