Saturday, 15 August 2020
" Theoretical astrophysicist David N. Spergel has described cosmology as a "historical science" because "when we look out in space, we look back in time" due to the finite nature of the speed of light "
I always thought I was looking back in time
I wrote poetry about it
" exemplified by Marcus Aurelius's observation that a man's place in that relationship: "He who does not know what the world is does not know where he is, and he who does not know for what purpose the world exists, does not know who he is, nor what the world is."
the beauty of the universe and nature
is encapsulated by the poetry made about it
and poetry can alter the future of history
" For example, in fluid dynamics, the velocity field is the flow velocity, and the quantity of interest might be the temperature of the fluid. In which case, the material derivative then describes the temperature change of a certain fluid parcel with time, as it flows along its pathline (trajectory) "
is about material derivatives , there is a certain art in the scientists
that work with these things
" Subject space-time to the same fluid dynamics and where to we arrive? "
life as a hologram ?
" Theoretical physics is a cornerstone of modern quantitative science, on which so much else rests. It is perhaps the highest-impact, lowest-cost area of basic research. The field advances our fundamental understanding of the universe, and seeds the technologies of tomorrow "
thanks Ghost , to be honest I'm googling and using bits and pieces from school !
everything ive posted here is a new discovery for me !
ha ha !
Nobody fully understands how gravity works, or even why gravity exists. One way of looking at gravity is to think of it not as a force like magnetism, but instead as a natural result of the way mass bends space. Any object with mass (like a star) pushes on space and bends it, so that other objects (like planets) that are moving in a straight line are also going around the star. It looks to us like the star is pulling on the planet, but really the star is bending space
so the key is not to ask why but how !
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