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Ultimate proof of Magnetic Vortex, free book and videos

Started by TheoriaApophasis, July 13, 2014, 04:20:12 AM

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MileHigh


TheoriaApophasis



TheoriaApophasis

Quote from: picowatt on August 01, 2014, 08:18:47 PM
A few interesting links worthy of at least a quick read:

http://en.wikipedia.org/wiki/Transmission_electron_microscopy



Its too bad your SHIT link leaves out an important point


There are NO electron emissions in an "electron microscope"......... ALL BIO SUBJECTS are coated in GOLD and what is measured is dielectric (electrostatic and focused) reflectivity of the subject



picowatt

Quote from: TheoriaApophasis on August 01, 2014, 08:47:51 PM


Its too bad your SHIT link leaves out an important point


There are NO electron emissions in an "electron microscope"......... ALL BIO SUBJECTS are coated in GOLD and what is measured is dielectric (electrostatic and focused) reflectivity of the subject


It doesn't have to be gold.  Aluminum, silver, and even a conductive carbon film can be used.  In reality, no coating is really needed for the process to work.  However, for non-metallic targets (biological samples, etc) placing them in a vacuum desiccates them causing them to become a fairly good electrical insulator.  Because of this, after a short period of time in the beam, negative charges build up on the target which becomes sufficient to cause deflection of the electron beam away from the target as the beam approaches the target, spoiling the ultimate resolution obtained.  The conductive coating is grounded to prevent charge build-up and the resultant beam deflection produced from the target acquiring a negative charge.

No conductive coating is required for electrically conductive objects. 

Check out the ESEM.  Electron microscopy can now be performed on moist biological tissue (even living tissue) at closer to atmospheric pressure without the need for the conductive coating at all, as the moisture in the target is sufficiently conductive to prevent charge buildup.

Pretty cool stuff actually...

PW 

(And I believe that was indeed, for the most part, covered in the links provided)