We had a 'little explosion' in the chem lab in my high-school. We had white phosphorous in the store room, but someone left the can it was stored in without sealing the air out. Eventually the water evaporated enough to expose the white phosphorus, causing the explosion.
We didn't have red phosphorous (that you don't expose to water!) ... but playing with metalic sodium and a vat of water was pretty cool (the teacher wouldn't let us do it, so he carved some slivers off of a block and tossed it into a 5 gal glass vat mostly full (initially!) of water. It sprayed 'everywhere'. :) -- Nice to have a good demo flume hood and safety shield! On Fri, Aug 15, 2014 at 9:17 AM, John F. Eldredge <[email protected]> wrote: > My high school physics teacher decided, for some reason, to show his class > how to etch glass. He brought in a pane of glass; borrowed a bottle of > hydrofluoric acid from the chemistry stockroom next door, without the > knowledge of the chemistry teacher; laid the pane of glass on the sill of > an open window; and drew a pattern on the glass with the acid. Things went > OK for the first few minutes, but then the wind shifted and started coming > in the window. The fumes were so irritating that the physics classroom had > to be evacuated for the rest of the day, with a rag stuffed into the crack > under the door to keep the fumes out of the hallway. The room was closed > off for two days; I don't know who did the cleanup. The physics teacher > kept his job, although I imagine he got a reprimand. > > > On August 14, 2014 3:12:49 PM CDT, JMJ <[email protected]> wrote: > > On 08/14/2014 09:13 AM, John F. Eldredge wrote: > > > hydrofluoric acid, one of the most corrosive > > > substances known. > > > > Ah yes, good ol' hydroflouric acid. One of its many uses was > > demonstrated in the first season of Breaking Bad. > > > > JMJ > > -- > John F. Eldredge -- [email protected] > "Darkness cannot drive out darkness; only light can do that. Hate cannot > drive out hate; only love can do that." > Dr. Martin Luther King, Jr. > > -- > -- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group at > http://groups.google.com/group/nlug-talk?hl=en > > --- > You received this message because you are subscribed to the Google Groups > "NLUG" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- ><> ... Jack "Whatever you do, work at it with all your heart"... Colossians 3:23 "If you are not part of the solution, you are part of the precipitate" - Henry J. Tillman "Anyone who has never made a mistake, has never tried anything new." - Albert Einstein "You don't manage people; you manage things. You lead people." - Admiral Grace Hopper, USN "a nanosecond is the time it takes electrons to propigate 11.8 inches" - " - http://youtu.be/JEpsKnWZrJ8 "Life is complex: it has a real part and an imaginary part." - Martin Terma -- -- You received this message because you are subscribed to the Google Groups "NLUG" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/nlug-talk?hl=en --- You received this message because you are subscribed to the Google Groups "NLUG" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
