ctechbob

4 ms·

1. 1.▲
   by ctechbob 3y ago

   Knowing Better put together a pretty good vid on the history of Comapny Towns in the US: https://www.youtube.com/watch?v=1rzFyBdKLvU
2. 2.▲
   by ctechbob 3y ago

   Is that why Dupont and Honeywell have been sued repeatedly for anticompetitive practices when it comes to refrigerants? HC's are gaining in popularity but they are being fought every step of the way because they are cheap and there&#x2
3. 3.▲
   by ctechbob 3y ago

   Most of the FC's are highly toxic when exposed to fire. R-1234yf is not only (slightly) flammable but also releases hydrogen fluoride and carbonyl fluoride when exposed to fire, but this is what is in almost all new cars. I've run
4. 4.▲
   by ctechbob 3y ago

   Dupont will see that this never sees the light of day. Just like how we don't use butane/propane/CO2 as refrigerants which are just as safe as most of the flourocarbons but have the downside of being too cheap to make any mo
5. 5.▲
   by ctechbob 3y ago

   He retired from that to pursue an engineering PHD several years back.
6. 6.▲
   by ctechbob 4y ago

   Paul Carlson also has a pretty big body of work when it comes to lots of things vacuum tube, lots of A5 restores. https://www.youtube.com/@MrCarlsonsLab
7. 7.▲
   by ctechbob 4y ago

   Can't believe I didn't see a mention of Paul Carlson in here. If you like vacuum tube radios, he's got plenty of it on his YT Channel. https://www.youtube.com/c/MrCarlsonsLab --Edit-- Sure enough it is