i cannot understand everything (far from it) but here is the part where I believe is an alternative explanation for the CMB :
Equations (2.38), (2.39), (2.40), and (2.53) all illustrate that the creation rate of particles with energies larger than the
inverse expansion time, ρ, is exponentially suppressed. Parker [11] has noted that these exponential factor are similar
to those which appear in thermal spectrum at finite temperature.
May I take another route and ask you what you know about the history of science ... about paradigm shifts ... and about how people very knowledgeable on the current paradigm cannot see (most of times historicaly) that a paradigm shift is about to happen ?
We are discussing here in a community dedicated to science and clearly I have to acknowledge that your arguments here are much better than mine 😆 and that you are very knowledgeable in the current paradigm of science.
Unfortunately for me, there is no community at Lemmy dedicated to the history of science where "very knowledgeable on the current paradigm" would be so telling for historians knowledgeable in this field.
in this cartoon, the lady character says : "Easy - - just memorize it as the first three prime numbers, if you realise you couldn't remember what came after 2 and started to panic and get them increasingly wrong"
first 3 primes : "2, 3, 5"
forgot 2nd : "2, ..., 5"
then, get the next primes : "7, 11"
... increasingly wrong : "not 518 ? ?"
No, either it's a bad one or I'm missing something.
https://explainxkcd.com/wiki/index.php/2937:_Room_Code
Cueball and Megan are on vacation or otherwise traveling, and receive a code for their hotel room. Megan gives a seemingly nonsensical and unhelpful mnemonic by which Cueball can remember it... which, inexplicably, actually helps Cueball to remember the code. Cueball becomes VERY angry on realizing this.
The first three prime numbers are actually 2, 3, and 5. So this technique easily identifies the first two digits "02". "05" is slightly wrong because it's not the second prime number, it's the third. And "18" is more wrong because it's not actually a prime number, it's 2 x 3 x 3.
So the mnemonic itself doesn't really provide the method for remembering the code. Instead, figuring out how to apply the bogus mnemonic will reinforce your memory of the code.
Right : it would be quite easy to spot someone whistling, even with those bushes around him, at about 85 ft (26 m) distance.
Still it is difficult for an author to create funny and yet realistic fiction.
In physics, emergence is used to describe a property, law, or phenomenon which occurs at macroscopic scales (in space or time) but not at microscopic scales, despite the fact that a macroscopic system can be viewed as a very large ensemble of microscopic systems.
Physics needs new ideas and enthusiasm at least to try and explain this Amaterasu particle.
Your ideas here are similar to my own : there is a (yet unknown) mechanism that is generating particles and it occurs in otherwise empty space.
Think “you wake up in the woods naked,” Dr. Stone-style tech reset. How could humans acquire a 1-gram weight, a centimeter ruler, an HH:MM:SS timekeeping device, etc. starting with natural resources?...
The metre was originally defined in 1791 (…) as one ten-millionth of the distance from the equator to the North Pole along a great circle, so the Earth’s circumference is approximately 40000 km. en.m.wikipedia.org/wiki/Metre
The kilogram was originally defined in 1795 during the French Revolution as the mass of one litre (1/1000 m³) of water. en.m.wikipedia.org/wiki/Kilogram
… and the last major SI unit is the second which of course you know is (originally was) 1/86400 day.
Please notice about the Celsius scale : the second reference point isn’t a mixture of ice and salt but rather pure water freezing point.
Now how can we as naked humans develop technology to figure this out is something of historical proportion, that’s a quite amazing story !
This would need the Earth to make one complete rotation around the Sun in an exact whole number of times it rotates around itself. …which is not the case right now and extremely difficult (meaning near impossible) to change.
…no daylight savings…
Okay but now we have a greater problem : we have to change (twice, a year) the time when business, school , stores etc… open and close, for it to be convenient with outside natural light. So, in my opinion, this is not an improvement.
if you have both liquid and solid water at equilibrium then you have zero degrees Celsius. Pressure has minimal effects …at plus or minus 0.5 atmosphere. of course if you go to a hundred or a thousand atmosphere then there is an effect of pressure.
Small pieces of ice will equilibrate their temperature faster in water.
Surface tension has minimal effect on melting temperature unless you go to extremely small pieces of ice meaning less than one micron, …which is not possible to achieve anyway because such small ice pellet with fuse rapidly to form larger ones.
Yes a bucket of a mixture of small ice pellets, say a few millimeter size, plus water, (this bucket being enveloped with some insulation) would be a great zero degrees Celsius reference point.
… “the actual melting point of ice is very slightly (less than a thousandth of a degree) below 0 °C.” …
isotopic distribution of heavy and light elements in water also has a very slight effect on melting point. So, rainwater and water distilled from ocean will not melt at the (exact) same temperature.
Now, about small particle fusing together this is true not only of ice but of any material.
it’s called sinteringand it is caused by diffusion and a lowering of the surface energy.
This process is faster when the material is near it’s melting temperature and faster yet if in contact with any miscible liquid phase.
So I was day dreaming and I caught a thought. What if what we understand about physics is actually all there is to understand? What if you objectively cannot move faster than the speed of light because you can’t do the time traveling things necessary. This would mean that the only way to travel amongst the stars would be to...
Built a machine that can repair itself. Send it to a nearby planet. Give it the ability to manufacture human embryos from our genetic code using only inorganic material. Make at least 2 ; let’s call them Adam and Eve. Keep this machine somewhere hidden and near them so to guide them and their offsprings for a few milleniums. Someday, if they are mature enough, tell them what happened.
Ha, thanks … not available freely online yet it is : en.m.wikipedia.org/wiki/James_S._A._Corey
James S. A. Corey (June 27, 2023). How It Unfolds. The Far Reaches. Vol. 1. Amazon. ASIN B0C4R4V6KN
is this the starting point of a new cosmology ?
Hi,...
xkcd #2937: Room Code ( imgs.xkcd.com )
https://xkcd.com/2937...
xkcd #2904: Physics vs. Magic ( imgs.xkcd.com )
xkcd.com/2904...
xkcd #2888: US Survey Foot ( imgs.xkcd.com )
xkcd.com/2888...
Emergent fields (theoretical physics)
Curious non-professional here....
xkxd #2860: Decay Modes ( imgs.xkcd.com )
xkcd.com/2860...
There's some more Linux malware out and about. Make sure you secure your boxes ( arstechnica.com )
How could SI units be derived from scratch without the use of modern technology?
Think “you wake up in the woods naked,” Dr. Stone-style tech reset. How could humans acquire a 1-gram weight, a centimeter ruler, an HH:MM:SS timekeeping device, etc. starting with natural resources?...
What if solving interstellar travel isn't about figuring out faster than light propulsion, but how to extend our own lives?
So I was day dreaming and I caught a thought. What if what we understand about physics is actually all there is to understand? What if you objectively cannot move faster than the speed of light because you can’t do the time traveling things necessary. This would mean that the only way to travel amongst the stars would be to...
Ron DeSantis’ campaign finances have some flashing warning signs ( www.nbcnews.com )
Full article text:...