Dedeleco wrote:Alain G does not know the initial past history of the very first fluorescent lamps that I recalled, understands askance and contempt, does not read past history, and says anything, instead of learning, the reality that 'he could learn from books, before the internet, like me !!!!
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Stop "looking at yourself in the navel", Dedeleco! It's not just you who learned from books before the Internet!
- There was a time when I looked at an old science book "Lessons of things", where it is written that a liter of CO2 weighs 2 grams, while air weighs 1,3 g:
Carbon di-oxide (carbonic acid) CO2 Atomic mass 44 Density 1,53 (relative to air, noted 1) ! In spite of the winds which diffuse it in the atmosphere, it is necessary for the plants which "digest" it by manufacturing sugars necessary for their growth! Indeed :
we SELL CO2 as a supplement for plant growth in garden centers (which could mean that there is not enough, in the atmosphere!?) !!!
- Electricity too, I learned in books because there was no Internet when I took electricity lessons, with the laws of Ohm, Ampère, Pouillet, law of nodes, etc ... Single-phase, three-phase current, phase shift in coils and capacitors, RLC circuits ...
- But
unlike you, I examine without "jumping on my keyboard" to criticize! And if another speaker taught me something, I tell him!
- @ +!
