| General > General Technical Chat |
| How thievable are oscilloscopes? |
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| SiliconWizard:
Yes, you'll own nothing and you'll be happy. =) |
| Simon:
nail varnish remover? |
| tggzzz:
--- Quote from: Simon on July 09, 2022, 08:30:09 pm ---My school chemical lab had sulfuric acid, but intentionally diluted to a point you had to be wanting to do harm to do harm with it. --- End quote --- My school's wasn't. Fun when poured over sugar. Must try that with the sulphuric acid drain cleaner I bought a decade or two ago, in B&Q. We were also given Na and K to play with observe the different relative reactivity with water. I keep my Na in a metal cupboard, together with potassium permanganate sodium chlorate and powdered Mg. The cupboard is is my asbestos and cement garage. We were warned that, when disposing of KCN down the sink, to make sure we didn't allow any acid down the drain. Yes, we did watch Hg swirl around Petri dishes. Hypnotic. Yes I did stink my parent's kitchen out with H2S. They did keep the radioactive sources locked up. Shame my friend's fob watch was noticeably more intense (and was sent to Harwell!). For the more interesting stuff told in a delightfully droll style, see https://www.science.org/topic/blog-category/things-i-wont-work-with Examples: chlorine triflouride ("Sand won't save you this time"), FOOF (yes, di-oxygen di-flouride), hexamethylenetetramine which you make more stable by mixing it with TNT ("there are six nitrogens and six nitro groups, the first assumption must be that these are all bonded to each other. I mean, come on, leaving the nitro groups attached to the carbons is for wimps. So that means that someone, somewhere, has perversely made a poly-N-nitro cage compound, as if they'd been dared to cram the most bond energy into the smallest space.") I don't see how kids can have fun in school science lessons anymore. |
| Alex Eisenhut:
About 23 years ago I worked for a company that went from the typical battleship-sized 7000 and 11000 series Tektronix mainframes to the TDS lunchpail style scopes. Yes, they started disappearing. So it doesn't matter where or when or who, stuff will disappear. |
| Faringdon:
Thanks, Shame Airtags are £29 https://www.apple.com/uk/airtag/ ...wish there was some other cheaper thing, like maybe an NFC tag i wonder....even though you only detect it if you "scan" it Like an RFID tag you get on jars of coffee insupermarkets https://www.rfidshop.com/30mm-inlay-tag-mifare-ultralightnfc-ev1-1255-p.asp The readers cost a fortune though. |
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