In this video I repair my antique Torricelli barometer (mercury stick barometer) with air bubbles (air locks) in it. I explain how does this type of barometer work and how it was invented. This device measures atmospheric pressure and gives you a weather forecast.
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i hope you will save these drawings :d 😀
Torricelli's face tho! Lmfao
How is this device calibrated? By the amount of Hg in the system?
It would be nice to see a ruler in mm next to the mm Hg scale. The Hg level in the bottom tank changes with atmospheric pressure, that must be compensated for in the mm Hg scale. So I expect both don't match.
Great you shared your 3 ideas about how to remove the air with us. Lovely how the seringe affects the air bubble. It is an impressively simple and effective method.
hello sir big fan of ur videos
recently i have bought following power strip can u plse tell me if its good or dangerous
https://www.google.co.in/url?sa=t&source=web&rct=j&url=https://www.amazon.com/Universal-Power-Strip-Outlets-ZGN-T08/dp/B07BQFYCLJ&ved=2ahUKEwiWueW40ZHcAhUcSY8KHYu5ApgQFjAAegQIAxAB&usg=AOvVaw1sq2sE75YHKJueOVuo2tMh
keep up the good work sir
thanks in Advance
Cigaretový filtr jako ucpávka? Stálo by za pokus
Your drawings are very nice as always
please explain computer switch mode power supply with schematic diagram !
+DiodeGoneWild –
WARNING: even a small amount of Mercury Hg is harmful https://www.youtube.com/watch?v=x0x3rbHFwQU … SCUBA recommnended
Back in the day, My mother swore by a barometer we had in the hall way for weather forecasts. We didn't have digital Oregan stuff back then.
1:42 wow nice human picture..
Your videos are always very detailed, nice job.
I suppose a safe version can be made with Galinstan, its density is half a high as that of mercury, and if you mount it with the bottom to the floor, it will still fit inside living spaces.
Dodgy Health & Safety!!
Great cartoon!
That was fun. Do more. It is interesting that you can speak many languages of science.
As far as I understand, the level in the tank is pretty important because the level in the column is measured relative to the level in the tank. That's how you can calibrate your unit.
1. If you have access to a 3D printer, you could print the missing lid.
2. You probably should pour some water above the mercury, to minimise mercury evaporation. Since the density of water is much lower, it won't affect the pressure measurement significantely. The same also applies to your storage bottle with mercury.
I strongly approve of Evangelista's moustache