Hazards of repair
in [Repair]
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From: GregS on 4 Jan 2010 10:02 In article <hhk5mu$gdk$1(a)speranza.aioe.org>, bob urz <sound(a)inetnebr.com> wrote: >http://www.bvws.org.uk/405alive/tech/safety.html > >I especially like the radioactive turntable.... > >bob I routinly check any centrifuge I work on. I found my old pentax lens had a high count from its uranium ore coatings. I remember well the radioactive static eliminators. greg
From: Mike Tomlinson on 6 Jan 2010 04:46 In article <7qejvtF58vU1(a)mid.individual.net>, Adrian C <email(a)here.invalid> writes > >The last one on this page looks like a ghost ... Some good demos of working ones at YouTube: http://www.youtube.com/watch?v=Rt-a8fxgtno http://www.youtube.com/watch?v=B5NJQXy-qFU&feature=related http://www.youtube.com/watch?v=UmM68nnP1CU&feature=related -- (\__/) (='.'=) Bunny says Windows 7 is Vi$ta reloaded. (")_(") http://imgs.xkcd.com/comics/windows_7.png
From: Phil Hobbs on 7 Jan 2010 21:13 On 1/2/2010 12:02 PM, ian field wrote: > "Phil Hobbs"<pcdhSpamMeSenseless(a)electrooptical.net> wrote in message > news:4B3E1EA1.7050706(a)electrooptical.net... >> On 1/1/2010 1:45 AM, bob urz wrote: >>> http://www.bvws.org.uk/405alive/tech/safety.html >>> >>> I especially like the radioactive turntable.... >>> >>> bob >> >> Fun. Not 100% accurate, though--the getter inside tubes is not mercury, >> it's usually sodium metal. Mercury has a high vapour pressure, and was >> used in mercury vapour rectifiers and thyratrons, but not in ordinary >> tubes. Also there's nothing too nasty about lithium other than that it >> burns easily. > > Lithium compounds were used as antipsychotic drugs, but apparently they're > pretty nasty stuff and have been replaced with other things. > > Lithium carbonate is still used for mania. Nobody knows why it works, but iirc it's still better than anything else. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: Phil Hobbs on 7 Jan 2010 21:13 On 1/2/2010 12:02 PM, ian field wrote: > "Phil Hobbs"<pcdhSpamMeSenseless(a)electrooptical.net> wrote in message > news:4B3E1EA1.7050706(a)electrooptical.net... >> On 1/1/2010 1:45 AM, bob urz wrote: >>> http://www.bvws.org.uk/405alive/tech/safety.html >>> >>> I especially like the radioactive turntable.... >>> >>> bob >> >> Fun. Not 100% accurate, though--the getter inside tubes is not mercury, >> it's usually sodium metal. Mercury has a high vapour pressure, and was >> used in mercury vapour rectifiers and thyratrons, but not in ordinary >> tubes. Also there's nothing too nasty about lithium other than that it >> burns easily. > > Lithium compounds were used as antipsychotic drugs, but apparently they're > pretty nasty stuff and have been replaced with other things. > > Lithium carbonate is still widely prescribed for treating mania. Nobody knows why it works, but iirc it's still better than anything else. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net
From: Phil Hobbs on 7 Jan 2010 21:15
On 1/2/2010 12:02 PM, ian field wrote: > "Phil Hobbs"<pcdhSpamMeSenseless(a)electrooptical.net> wrote in message > news:4B3E1EA1.7050706(a)electrooptical.net... >> On 1/1/2010 1:45 AM, bob urz wrote: >>> http://www.bvws.org.uk/405alive/tech/safety.html >>> >>> I especially like the radioactive turntable.... >>> >>> bob >> >> Fun. Not 100% accurate, though--the getter inside tubes is not mercury, >> it's usually sodium metal. Mercury has a high vapour pressure, and was >> used in mercury vapour rectifiers and thyratrons, but not in ordinary >> tubes. Also there's nothing too nasty about lithium other than that it >> burns easily. > > Lithium compounds were used as antipsychotic drugs, but apparently they're > pretty nasty stuff and have been replaced with other things. > > Lithium carbonate is still widely prescribed for treating mania. Nobody knows why it works, but iirc it's still better than anything else. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal ElectroOptical Innovations 55 Orchard Rd Briarcliff Manor NY 10510 845-480-2058 hobbs at electrooptical dot net http://electrooptical.net |