General > General Technical Chat
Electroboom: How Right IS Veritasium?! Don't Electrons Push Each Other??
Alex Eisenhut:
If I use a hair dryer, does the wind make the electons flow faster on the outside of the heating coil?
electrodacus:
--- Quote from: Alex Eisenhut on July 05, 2022, 02:21:48 am ---If I use a hair dryer, does the wind make the electons flow faster on the outside of the heating coil?
--- End quote ---
Electrons flow inside the wire. Since air particles hitting the wire have a much lower temperature than the wire the wire temperature will drop thus the resistance of the wire will drop slightly meaning higher current as electrical potential is about the same.
That means a bit more electrons flow in a unit of time through a section of wire. But this increase in number of electrons flowing through the wire also results in a higher number of collisions so slightly more energy is radiated + conducted (conduction due to air molecules) than with just normal air convection.
AnalogueLove1867:
--- Quote from: gnuarm on July 04, 2022, 03:36:51 pm ---
--- Quote from: AnalogueLove1867 on July 04, 2022, 12:57:54 pm ---
--- Quote from: gnuarm on July 04, 2022, 12:26:56 pm ---
--- Quote from: AnalogueLove1867 on July 04, 2022, 01:51:53 am ---
--- Quote from: gnuarm on July 03, 2022, 01:43:10 pm ---
Someone is getting their fields crossed (pun intended).
--- End quote ---
Wow, people here are an interesting bunch. If you connect any insulated metallic object to a minus 9v terminal, the terminal will push extra electrons into the object creating an overall negative charge.
--- End quote ---
That is wrong. An insulated metalic object will be polarized with more electrons further away from the battery minus terminal, and less electrons closer to the battery minus terminal, but the net charge will be unaffected.
Where did you get this idea? Or did you simply mistype it?
--- Quote ---When you disconnect the terminal the object will retain its charge because there is no way for the extra electrons to escape to an area with a lower concentration of electrons.
When you discharge the metallic object a small measurable current will pass from the object to ground. That is the extra electrons flowing from the object to ground. The object then returns to a 0 potential.
All conductors have some capacitance. It isn't just capacitors.
No, there is no chicken and the egg situation. In every example you can possibly give, it is a forced movement of charged particles with mass that produces a macroscopic potential difference in electronics.
The energy required to move electrons can come from chemical reactions, thermal energy, Nuclear bombardment, Radioactive decay, macroscopic motion ( turboelectric generators ), compression ( piezo-electrics) etc
--- End quote ---
Everything after your error can be ignored.
--- End quote ---
You are confusing electrostatic induction at a distance with a direct conducting connection lol. That is YOUR error! Yes, everything YOU say is probably garbage.
You are directly connecting a minus 9v battery terminal to an insulated conductor. It becomes a conducting extension of the terminal.
So during the connection extra electrons can flow from the negative terminal into the conductor until it also contains more electrons than protons and thus carries a net negative charge.
When you disconnect the conductor it retains this charge because it IS INSULATED! SUSPENDED ON A FOAM CUP ETC PLEASE USE YOUR OWN BRAIN. INSULATED FROM GROUND....
When you discharge it to ground a small current of surplus electrons flows out to ground.
This routinely happens all the time.
If a charged insulated conductor touches an identical neutral insulated conductor they both end up charged to half the capacity of the original conductor. Conservation of charge.
Monopole magnets don't exist but mono-charges certainly do.
Funny how you represent yourself with a monkey pic. An accurate depiction.
--- End quote ---
The problem is your misstatement of touching an insulated conductor to the battery. If it is insulated, the conductor can't make contact with the battery terminal.
Why would you describe the conductor as insulated if it is intended to make conductive contact with the battery? I suggest you focus on the relevant aspects of the problem and not introduce confusion.
--- End quote ---
INSULATED FROM THE GROUND.... INSULATED FROM THE GROUND.... AN ELECTRICALLY ISOLATED PIECE OF METAL...
AnalogueLove1867:
--- Quote from: dunkemhigh on July 04, 2022, 01:49:35 pm ---
--- Quote ---If a big heavy metal ball ( the electron ) is covered with a very light but elastic rubber coating ( the electric field ) and it collides with another similar ball, would you actually say that the rubber coating is what caused the first and second ball to move?
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Normally, no, because it's irrelevant, particularly at scale. But if the question was "how does one ball push another" then the answer would have to be "it pushes against the elastic rubber coating". That's relevant because 'elastic rubber coating' reacts differently to 'metal on metal spark-inducing ricochet', and the way in which the subsequent balls move will be different.
Further, the elastic rubber coating may have non-bounce effects - if the ball was doing this under water, for instance, perhaps the coating would give the ball buoyancy which would be important to what later balls will do.
--- End quote ---
Exactly the answer is no. It is completely relevant. Every other query has already been answered. You have no argument. Goodbye now.
AnalogueLove1867:
--- Quote from: Alex Eisenhut on July 05, 2022, 02:21:48 am ---If I use a hair dryer, does the wind make the electons flow faster on the outside of the heating coil?
--- End quote ---
No because the wind in a hair dryer is not exerting anywhere near enough energy in the right place at the right time. If you could shoot air at the coil with a particle accelerator you would indeed cause electrons
to flow faster in the coil due to ultra fast particles penetrating a fraction of a millimeter deep into the wire before being slowed down by collisions with electrons and protons.
Fast wind with some dust can pull electrons out of fence wire that is insulated from ground. Causing it to develop a high enough charge to give you a nasty shock. So Electrostatic charging by friction.
That is the closest possible thing to what you are talking about.
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