RE: Searching for dark matter with old stones
almost a 1000 votes :p ... moving on up in the world
i try my hand at the paper you linked by i quite soon have to admit its mostly slightly above my braingrade lol, leaving out the symbols i cant read and the formulas used i get to about one word per sentence i would need to google and study by itself ... doppler effects ... mössbauer effect , nuclear recoil , the name WIMP is funny though , weakly interacting, someone must have had a lol there ...
I got as far as understanding they reduce the cost by a magnitude of several zeroes by removing the need to shelter from this cosmic background, and that is why detectors are built deep underground (leave me asking the same as those neutrinos though, if a ray can pass through the planet whats the point of a few kilometres of rock in between ? does that REALLY help ?).
They actually try to use a system that removes the whole problem of this background noise ? In some way they check the result of cosmic baseball, a gamma ray fired from the other side of space hits an atom here and the core gets pushed back (a microscopic bit) and in some way this leaves a trail that can be detected 500 million years later ?
now we're seriously above my braingrade lol, then after reading your explanation i think i'm not far off the mark with my interpretation but what i still dont get is how a gamma ray hitting an atomic nucleus out of its location leads to detection of dark matter ?
where does the dark matter come in to play here, thats not completely clear ?
i know its not an active post but im totally catching up with everything as much as i can ... if you find time , (and i know you always try) i would be much obliged as always.
cosmic baseball on 500 million year old stones instead of burrowing miles into the earth
sounds like creative use of resources to me (i think i understand that much so far :p)
fascinating "matter" as always, i think i might have to clone myself to keep up with everything here on steemit by now ... you don't have any mad frankenstein geneticists in your #steemstem team you could recommend by any chance?
Neutrinos will interact too and leave track too. But this is even more rare than dark matter.
Dark matter travels within the universe, and dark matter is supposed to constantly go through Earth.
Mmmhhh... try @mobbs :D
@mobbs ... #steemstem manager from China ...
topmost post the history of death by sawing
yea i think we could probably get along,
thank you for the directions
so dark matter is like neutrinos in the way that its constantly everywhere, it goes through about everything and they are both (so far) undetected but theoretically they make the gaps and the 94% of reality that's missing work
it's like the more i understand the less i get it :p
but i'm not one to quit something i chose to do , thank you again for taking time, i hope you're enjoying the summer a bit , can't always be strung up (sounds bad literally translated hmmm)
but the technique described does remove the need to worry about the background noise, doesn't it ? since they measure trails in the rock that are there , etched for 500 million years, it doesnt matter how many invisible particles and obscure stuff shoots through or near it at the time of examination
once again pardon my lack of scientific lingo, im actually quite amazed i could make out the meaning of that paper, its a bit of a problem googling these things, you often get links to places like Cornell and those papers arent really written for the people, are they ?
much obliged
No, neutrinos are detected and observed. Dark matter is not.
There is always some background, and we can always control it to some extent. This yields some error bar on the result.
you mean in this case statistical noise thats "etched" in the same stones together with impact on the core (the nucleus?) and the distance it moved i suppose ? i didnt think of that :)
thats why you're the physicist i guess, thanks a lot for replying every single one again !!!
We are always expecting some background. Some of them can be controlled (i.e. rejected by cleverly investigating what is going on), some of them can't (and his will give rise to some limitations in terms of sensitivity).
with every generation there will be fresh minds who make like paracelsus and tear up the books after reading, come up with new ways to apply old theories or tweak it a little to make it work , and most important, are more able to use whatever is at hand creatively since they were born in the now
thats just how it goes i suppose, we can only hope it happens in our lifetime
or aubrey de grey finds a way :) , thats my mad frankenstein right there
thank you again and have a nice day, -sensei