pointertovoid Posted March 2, 2017 Share Posted March 2, 2017 You can see some images where the magnetic polarisation is read at a small scale, for instance herehttp://aip.scitation.org/doi/full/10.1063/1.4944951 especially the Fig. 5http://aip.scitation.org/na101/home/literatum/publisher/aip/journals/content/adv/2016/adv.2016.6.issue-3/1.4944951/production/images/large/1.4944951.figures.f5.jpeg at a perfect scale for hard disk drives. Link to comment Share on other sites More sharing options...
jaclaz Posted March 2, 2017 Share Posted March 2, 2017 1 hour ago, pointertovoid said: ... reading 100 atoms at one proper radius suffice to get the information free of noise .... The spin-sensitive STEM is just the answer to smaller bits and perpendicular recording. All the rest is identical to information recovery on a damaged HDD or a damaged partition and is banal. Ah well, then it is better to encrypt data, make no less than 3 random passes and finally destroy hard disks with a sledge hammer, right after having passed them through a degausser and an oven at a temperature above Curie point, in order to have a reasonable amount of security. Please, as soon as someone recovers any meaningful data after a single 00 pass through a STEM (or whatever) don't forget to update this topic with a link to the report or published paper, thank you. jaclaz Link to comment Share on other sites More sharing options...
dencorso Posted March 2, 2017 Share Posted March 2, 2017 2 hours ago, pointertovoid said: The argument with the second law doesn't apply and was pseudo-science. No pseudo-science at all. 2 hours ago, pointertovoid said: The second law has nothing to do with puzzles, and everything to do with entropy, internal energy, temperature, enthalpy and the likes. Of course it does. Entropy reflects the number of degrees of liberty presented by a system. A solved puzzle has just one, etc. Your understanding of the concept of entropy seems to be too narrow. You should study more. No offense meant. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now