Thanks for the explanation. But I'm not sure if this is a correct assumption. Temperature in general gas theorie is defined as the summ of the energy of the random moves of the gas molecules. I agree that a similar concept can be applied to plain subatomic particles. BUT if all particles are...
Hi !
Thanks for the quick reply and the pointers for helping me to 'understand' this.
I was not sure about this collapsing problem, because this seemed a little bit strange that everything would be smashed before reaching the speed of light.
Regarding the DM beeing identified as cold -...
Hi !
I'm trying to understand the Dark matter problem, because it scares me if clever people tell me they don't know out of what 23% of the universum is consisting.
But let's start with a simple question on GR:
GR is stating that a body moving at a speed close to c holds an almost...
Damned - I still have problems with my Excel and the discrete calculation steps because now I have a circular reference.
If I go 1km down this means that the pressure on the bottom should be the one at the top + pressure loss from friction + hydrostatic pressure of the 1km of gas.
The...
One more question on the wind - I found a nice picture on this (see attachment)
Would this mean that a hose with pull from top would actually form more or less such a bent curve ?
Because I would like to include also the pull force calculation into the excel, and for this I need a better...
Well, the first key finding was that actually the blow speed at the bottom is lower (which is logic if you limit the head to 270m/sec which is approximately the speed of sound at -90 degree of Celsius), but you need a slightly higher surpressure to keep the whole thing stable (approximately...
Hi !
Just a small update so that you don't think I have forgotten you or got completely lost:
I have spent the last few days to build a spreadsheet which calculates the standard atmosphere from 0 to 100km in 1km pieces, and then applied the formulas of the slides to these pieces to better...
Doubt is not a pleasant condition, but certainty is absurd.
— Voltaire
I think he is now already sufficiently warned and when I edit it the quotes would be even more confusing for him.
A flag is also fighting gravity - hence the wording is not that bad :-)
Even Dyneema which is already pretty strong at a reasonable price/strenght ratio is able to hold already 300-400km of its own weight. But if you attach it to a hose which is able to hold the weight you can even avoid this...
As the slides say, rockets are boring, but they work.
Unfortunately there is no such string which the rocket could pull - it would first tear from the acceleration and then from its own weight. The whole idea of the hose is to do everything slow and under control. Erecting it in a day, blow...
If the relationship N-SAT size to hose diameter is less then something like 10 there should not be a real problem - it will simply move to the center of the flow where the highest speed occures. And even when it would touch the walls, the force of a tangential impact is small and a hose under...
I don't have a problem with sarcasm and critics - I desperately need it to to make it work.
But let me try to adress the feedback we got:
Actually properly fllying in the typical steroid with a large mass and rendevouz it with the tether is quite a complex thing and there have been already...
Because I looked at the only other post he had so far which was about the shallowest angle of glide in aircraft.
Asuming that both questions could be related and maybe caused by a translation problem ist not such a bad suggestion - as English is not my mother language either I have a little bit...
A wild guess is that you are facing a poor translation of the German term 'grenzstabil' which means on the border of beeing stable - which is typically when the lift of the wings are only matching the weight of the plane, or it could be the point of minimal speed or maximal upward pointing angle...
Obelix has the same problem - so you are excused.
But Buzz is definitely the better Character for illustrating this concept - may the Toys (and Pixair) forgive me.