Can Activated Carbon Powder Fly Using Atmospheric Electric Field?

  • Thread starter Thread starter NERV
  • Start date Start date
AI Thread Summary
The atmospheric electric field exists with a strength of approximately 100 N/m, which is sufficient for a design involving activated carbon powder. The powder can be modeled as conductive spheres with a density of 2.7 g/cm³ and a radius of 1×10⁻⁵ m. To achieve levitation, the powder must be charged to balance the electric force against gravity, requiring a minimum voltage of 10¹⁷ V for flight. A voltage of 2034 V would provide additional lifting force equal to the weight of the powder. Clarification is made that the correct electric field strength is about 100 N/C, not 100 N/m.
NERV
Messages
12
Reaction score
0
As it is known to all,the atmospheric electric field does exists.In fact,near the ground its strength is about 100N/m.That's enough for my design.

Let's get some activated carbon powder.I think we can regard them as smooth,conductive balls with density（ρ）=2.7g/cm3,r=1×10-5m。If we want a can which has been filled with the powder float in the air by balancing the electric force and gravity,we need to charge the powder so that it can hold an amount of electricity.

Here I gave my calculation. I regarded each of these balls as an isolated conductor,which may lead to error.If anyone has some good ideas,please tell me.

C=4πε0r,FE=qE=UCE=4πε0rUE
if a charged ball can fly:
FE≥mg
∴U≥ρgr2/(3ε0E)
Substitute ρ=2.7×103kg/m3,g=10m/s2,r=1×10-5m,ε0=8.85×10-12(C/V.m),E=100N/m,we get

U≥1017V.
This is amazing.If we use U=2034V,we will get one more lifting force(equals the powder's gravity).
 
Physics news on Phys.org
Thread 'Question about pressure of a liquid'

Thread 'Question about pressure of a liquid'

I am looking at pressure in liquids and I am testing my idea. The vertical tube is 100m, the contraption is filled with water. The vertical tube is very thin(maybe 1mm^2 cross section). The area of the base is ~100m^2. Will he top half be launched in the air if suddenly it cracked?- assuming its light enough. I want to test my idea that if I had a thin long ruber tube that I lifted up, then the pressure at "red lines" will be high and that the $force = pressure * area$ would be massive...
View full post »

Thread 'Why is the 3 body problem unsolvable? And what will happen if someone solves it?'

I feel it should be solvable we just need to find a perfect pattern, and there will be a general pattern since the forces acting are based on a single function, so..... you can't actually say it is unsolvable right? Cause imaging 3 bodies actually existed somwhere in this universe then nature isn't gonna wait till we predict it! And yea I have checked in many places that tiny changes cause large changes so it becomes chaos........ but still I just can't accept that it is impossible to solve...
View full post »

Similar threads

Can Old Handouts Effectively Prepare You for Physics Tests?
Replies
11
Views
4K

Hot Threads

Recent Insights

Back
Top