What Does a Thermionic Cloud Look Like?

  • Thread starter Thread starter Kincaid K.
  • Start date Start date
  • Tags Tags
    Cloud
AI Thread Summary
A thermionic cloud consists of a cloud of negatively charged electrons surrounding the cathode. For visual references, conducting a Google image search for "thermionic cloud" yields various representations. Additionally, using the term "thermionic space charge" can provide more relevant images. These resources can help in creating an effective diagram for presentations. Exploring these search phrases will enhance understanding and visualization of thermionic clouds.
Kincaid K.
Messages
1
Reaction score
0
Hello:

I would like to include a diagram for my presentation showing a thermionic cloud. I've looked on the computer for something to get me started and have come to a dead end. Does anyone know where I can look to get some ideas of what a thermionic cloud looks like?

My understanding is that it is a cloud of negatively charged electrons around the cathode (negative) end.

Thank you
 
Physics news on Phys.org
Welcome to Physics Forums.

I suggest a google image search.

https://www.google.com/imghp

Just type thermionic cloud in the search box. Several ways of representing the electrons come up among the choices.

Thermionic space charge is another good search phrase.
 
Last edited:
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Calculation of Tensile Forces in Piston-Type Water-Lifting Devices at Elevated Locations'
Figure 1 Overall Structure Diagram Figure 2: Top view of the piston when it is cylindrical A circular opening is created at a height of 5 meters above the water surface. Inside this opening is a sleeve-type piston with a cross-sectional area of 1 square meter. The piston is pulled to the right at a constant speed. The pulling force is(Figure 2): F = ρshg = 1000 × 1 × 5 × 10 = 50,000 N. Figure 3: Modifying the structure to incorporate a fixed internal piston When I modify the piston...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top