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observing natural history

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fantasus View Drop Down
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    Posted: 10 Apr 2016 at 18:16
Some natural processes goes on for millions and billions years, but scientists has a good idea about them anyway.
Here I think about geological processes like rise and erosion of mountains, the moving tectonic plates. Also we could include evolution of living organisms. Like humans.
Change and evolution of our solar system, the sun and planets and of the universe in general. But there is a little problem, that is the modern science has existed for rather short time compared with those processes - only a few centuries at most.
So to what degree is it possible to see those processes in real time?
Continents move typically some centimetres a year, so observing and measuring it should be possible with some accuracy, especially if the research period is of some duration.
The same I guess is the case for other geological processes and for parts of evolution.
The study of the later has history of about 150-200 years experience, theorising.
On the other hand one may wonder about to what degree cosmic changes has been observed and measured in addition to being theorised.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote franciscosan Quote  Post ReplyReply Direct Link To This Post Posted: 11 Apr 2016 at 03:43
My favorite is the Oklo natural nuclear reactor where 2 billion years ago, ground water moderated uranium ore deposits (in greater concentration in those days) and caused a natural nuclear reactor which went off and on for about 100,000 years.  It proves that plutonium and other byproducts are not just manmade elements.
But undoubtably. certain events are so rare that we haven't seen them yet, or at least we haven't recognized them yet.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote fantasus Quote  Post ReplyReply Direct Link To This Post Posted: 11 Apr 2016 at 06:51
Some processes scientists,and others, may see as they happen "real time". When, let us say The Himalayabjergene or Alps åre said to be "growing" that could be tested from time to time. The same could be said about movement of continental plates. If to landmarks moves relatively to each others one metre in i couple of decades it should be possible to observe and measure with accuracy.
Or wether or not the earth or other bodies in space gains or lose mass, size, temperature etcetera.
The same for any clocklike biological proces. Mutation rate or other genetic or cellular change.
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