I too would really like to know the answer to this.
I have just started reading "Vlatko Vedral - Decoding Reality; The Universe as Quantum Information" and he seems to be saying that the reason computers get hot is because the act of deleting information means some entropy has to be lost and...
Don't be put off, it is very complex but truly amazing because of this, so worth spending some time trying to get your head round it all.
I take my hat off to the people who design them etc...amazing stuff
just trying to get a very basic understanding of them was stretching my mind to it's...
btw - can someone point me to a good explanation of what it is I am seeing in my cloud chamber?
I seem to be finding conflicting information
i.e. what are the different lines I see and where are they coming from
I would second the cloud chamber idea
I have just made one - it was very easy to make, the most amazing thing to see and you get to play with dry ice as well ;)
see: http://alanesq.com/cloud.htm
btw - I did have trouble finding cheap dry ice - I understand ice cream companies use it and...
I have been seeing what I can do with the Dicom files
e.g. producing 3d images of my brain, flashy animations etc.
I have had some very limited success using 3D-Slicer
http://www.alanesq.com/mri/head1.jpg and http://www.alanesq.com/mri/brain1.jpg
but I find the program a real struggle (in...
As promised, here are some of my scans:
http://alanesq.com/mri/
Hopefully any radiologists on the forum won't notice anything serious here ;-)
btw - these are the images from the 3 tesla scanner - the 7 tesla ones were a bit disappointing (I suspect because they were just doing scans...
Just to let you know I had my scan today and survived the ordeal ;-)
I was scanned on both a 3.1 and a 7 tesla scanner
I didn't feel anything (just a very slight flashing in my vision in time with some of the sequences on the 7 tesla) although someone else who has recently been reported...
Thanks - yes, that would have been worrying as I have expected to feel nothing
They are extraordinary machines.
I had always assumed that something was physically moving round inside the MRI machine (something like C.T. scanners) but the idea that there are no moving parts but it scans...
Yes - that explains it - it now suddenly all makes sense
thanks :-)
It's one of those things which seems obvious now you tell me but I would never have figured it out
I should have realized that the spin echo was involved in there - Doh!
btw - I am sticking my head in a 7 tesla MRI in...
Thanks for the reply
This is what I thought originally but then the timing diagram I was looking at on Wikipedia seemed to suggest that 2 slice selections were done so then I couldn't see why the phase would be needed (as you re only getting a signal back from a thin strip through the...
Hi,
I have been trying to figure out how MRI scanners work but am getting a bit confused and wondered if someone could put me straight on this ?
I am just interested as they strike me as being amazing machines (possibly one of human kinds greatest inventions?) and the way they work is...