There is an auction from the province of British Columbia Canada of some old physics lab equipment which includes a Dana 3800A nixie multi-meter. They don't ship so you would need to live nearby or have friend who can get it for you.
Regards Pharma Phil
---------- Original Message ----------
From: "alb.001 alb.001" <[email protected]>
Date: May 27, 2020 at 11:00 PM
I still have some GE silent mercury wall switches still in original packaging. I also have a plastic bottle with about 5 pounds of pure mercury which I used to play with.
Pharma Phil
---------- Original Message ----------
From: martin martin <[email protected]>
Date: May 27, 2020 at 8:06 PM
I have a box of mercury tubes with contacts. They were removed from switches and those old hood lamps on car.They still are cool to look at
On Wed, May 27, 2020 at 5:00 PM Mac Doktor < [email protected]> wrote:
Forget elemental mercury vapor, ingesting the mercuric oxide would have been a lot more fun.On May 27, 2020, at 11:53 AM, alb.001 alb.001 < [email protected]> wrote:I was both lucky and stupid as I did not appreciate what the toxicity of mercury was. Doing stupid chemistry things stayed with me with many further adventures in university.
In the late '70s our chem lab in High School was straight out of the '50s. Nice old-fashioned benches and sinks but no fume hoods or anything more sophisticated than a pair of plastic goggles. Anything we couldn't pour down the sink went into a large ceramic crock in the back corner of the room. I can't remember now if it had a lid or not. Some guy came twice year to empty it.
In the summer before my senior year I took Chemistry II which consisted of eight weeks of solid lab work for four hours a day. One Monday we walked in and there was a haze filling the entire room. We opened all of the huge windows (10~12' ceilings, steam heat and no A/C) and stood out in the hall for an hour. It had no distinct odor to it so we never did figure out what it was or where it came from.
One day the teacher asked me to help him refill the small hydrous ammonia reagent bottle we used in the classroom. I held a glass funnel while he poured what was probably less than half a liter into the bottle from a jar that must have been several liters. We held our breath as the liquid filled the reagent bottle. As soon as it was full I yanked out the funnel, put it in the sink as fast as I could without breaking it and jabbed the stopper in. At the same time the teacher set the other bottle on the bench and screwed the cap on as fast as possible. As soon as our hands were free we ran out of there like two bats out of hell and stood in the hall gasping for air while tears ran down our faces.
Then there was the time we were making some HCL and I got a tiny whiff. Man, that was as close to feeling like I was going to die in my entire life. Those poor sods in WWI. I can actually imagine what it was like.
Terry Bowman, KA4HJH"The Mac Doctor"
https://www.astarcloseup.com/
"Every kid starts out as a natural-born scientist, and then we beat it out of them. A few trickle through the system with their wonder and enthusiasm for science intact."—Carl Sagan, Psychology Today, 1996
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