A_A

u/A_A@lemmy.ca
4 posts · 56 comments

Recent posts

Recent comments

No physical mechanisms predefines future events (or is there one ?).

So, I could state that the future does not exist yet and the past as ceased to exist.

in that statement I have a problem with the definition of existence. Does the definition of existence exist itself ? This is (is it ?) more a problem of terminology than philosophy or physics.

Thanks for your time and attention.

We have never observed anything in the universe just popping into existence from nothing (...)

if we did, that would be a major shift in physics. in this regards I heard of (or read of) two candidates :
.1 if universe's expansion continues to accelerate, (it would mean) dark energy is increassing.
.2 an excess of hydrogen (clouds) outside of galaxies was observed that is difficult to explain with current cosmology.

I know these are not direct observation of something popping up, ...but still.

in my post header you will find a link to the original post. This place is for my personal archiving and testing.

Nevertheless, if I follow what you are saying here you mean to say : by changing frame of references we can violate conservation of energy ...or am I missing something ?

Please, let us move this conversation under the main post at :
https://lemmy.ca/post/5016031

At sea level air is about 1.25 kg/m³, so for one cubic kilometer cloud that is :
1 250 000 tons.

I put your result into table to show a problem at 51 km and above... since density decreases monotically with altitude.

mass (tons) altitude (km)
1 250 000 0
364 000 11
88 000 20
860 51
64 71

Clouds can be easily 10 cubic km.

I did make I have made many mistakes, much worse than this one and on many occasions. I would say : don't be so hard on yourself since it's important to forgive ourselves.

I do believe the following correction should be made again to your text though :

Gravity is an [edit: inverse squared] function, so it gets weaker at an exponential a squared rate as you move away from the source.

on Banana? Banana. Rule. · c/196 · 4 pts · 3y

I believe in this community you have to write the word "rule" in the title, like so :
Banana? Banana rules !
(you can edit the title even after posting, that is, if you want so)