Hi Slashme Thanks for the reply especially in form of the corrections already done by you and a third party Your difficulties mentioned above should cause me to revise some of the written stuff ideally the writing should give any nonphysicist a reassuring feeling about the list of instruments that follows while remaining precise for a physicist But again I dont want to promise anything in advance As you can see in other messages I also had some thoughts about the whole article and how it fits into Wikipedia By the way I was happy to have hopefully found an answer to the question that I found unanswered in many textbooks How do they measure entropy