Determination of Radius of Curvature for Horizontal Gun
We know two points on the electrons circular
orbit. Does that allow us to specify the curve and
determine Rc ? No (Think about this!)
What other information do we have?
Position where e-beam
strikes the phosphor.
The orbit is tangent at (x1,y1). Evacuated Bulb
This means the center of the orbit is directly Equation of a circle radius Rc
above (x1,y1). Or with setting (x1,y1) as (0,0) the with center at (xc,yc)
center is at (0,Rc).
Thus the equation of the orbit is (x)2+(y-Rc)2=Rc2. (x-xc)2+(y-yc)2=Rc2
Putting (x2,y2) into this equation allows you to
solve for Rc .