I remember seeing this on "Tomorrow's World" back in the 1970s, and it came up the next year as one of the technologies that seemed promising, but went nowhere. I don't know why it took 30~ 40 years for it to catch on. (They had a spray and a plant, it was back-lit so that you could see the spray going towards the plant.)
Not every surface is positively charged, but charge can be induced in an electrically neutral objects. Such neutral objects contain roughly equal amounts of positive and negative charges. When a negatively charged object is brought close to a neutral object, electrons (which have a negative charge) on the neutral object are repelled away to the other end. This causes the far side of the neutral object to gain a momentary negative charge, and the side facing the negatively charged object to gain a momentary positive charge. If we now connect the once-neutral object to the ground, which acts like a big conductor, the electrons can travel out from the object, and the once-neutral object is now positively charged. *By momentary, I mean that if ungrounded, the object will return to being electrically neutral once the negatively charged object is removed. As long as the negatively charged object is there, a charge will be induced on the once-neutral object.
I remember seeing this on "Tomorrow's World" back in the 1970s, and it came up the next year as one of the technologies that seemed promising, but went nowhere. I don't know why it took 30~ 40 years for it to catch on. (They had a spray and a plant, it was back-lit so that you could see the spray going towards the plant.)
This video is fantastic Thanks
Really good explanation.
Thank you for the informations😊
Looks , realy good , practically we have check ...the efficacy .
very informative, thank you :)
Hello sir, could you tell me why the spray gun is always held perpendicular to the body to be painted?
Its helpful
I just don’t get how the thing is positively charged.... do you just charge it positively??
@@travisking4390 they use it in farming as well. It technology has been there for 25 years. Nothing new
What is REA?
I wonder how many views this vid had before 2020
OOPS, well done video but off-base - the droplet are POSITIVELY charged - Duh!
The droplets are negatively charged, as the spray acquires electrons which can ONLY have a negative charge.
Hi :)
hello buddy wassup
bloody hell
Not helpful
This is bollocks. How is every surface positively charged?
Not every surface is positively charged, but charge can be induced in an electrically neutral objects. Such neutral objects contain roughly equal amounts of positive and negative charges. When a negatively charged object is brought close to a neutral object, electrons (which have a negative charge) on the neutral object are repelled away to the other end. This causes the far side of the neutral object to gain a momentary negative charge, and the side facing the negatively charged object to gain a momentary positive charge. If we now connect the once-neutral object to the ground, which acts like a big conductor, the electrons can travel out from the object, and the once-neutral object is now positively charged.
*By momentary, I mean that if ungrounded, the object will return to being electrically neutral once the negatively charged object is removed. As long as the negatively charged object is there, a charge will be induced on the once-neutral object.
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