# E-Tesla 6.11 strange prediction

```Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <Mddeming-at-aol-dot-com>

Hi Terry, All!
While waiting for the rain to stop (4 days now) I tried doing some "what-ifs"
with the E-Tesla 6.11 program in which I raised and lowered the primary coil,
keeping all else the same. There is a discontinuity at 19.75" that I cannot
explain. Is this a critical point in reality, or is it a computational
anomaly caused by the finite math of the CPU?
It will take a few days after the rain stops for the Lab (garage)
floor to dry out before I can take measurements.
Primary Cap.Calc Fres Calc
in.         pF                     kHz
16.50 22.23451 287.737
17.50 22.32667 287.143
18.50 22.43735 286.434
19.50 22.55733 285.669
19.70 22.55771 285.669
19.75 22.55710 285.669
19.80 24.25782 275.477
19.90 24.25782 275.477
20.00 24.25782 275.477
20.50 24.29766 275.251
21.50 24.66628 273.186
22.50 24.79134 272.496
23.50 24.96715 271.535
24.50 25.26754 269.916
25.50 25.60428 268.136
26.50 25.96334 266.275
Here is the other data from one run:
E-TESLA  V6.11C  November 21, 2000

Grid Size = 200.000000
Scale Multiplier = 1.000000
Terminated Coil
Ceiling Distance = 96.000000
Wall Distance = 48.000000
Primary Height (Inner Turn) = 16.500000
Primary Inner Diameter = 6.375000
Primary Outer Diameter = 24.375000
Primary Height (Outer Turn) = 16.500000
Strike Rail Height = 25.000000
Strike Rail Diameter = 30.000000
Secondary Base Height = 25.000000
Secondary Diameter = 4.280000
Secondary Length = 21.160000
Secondary Inductance (mH) = 13.760000
Terminal-1 Height (center) = 51.799999
Terminal-1 Cord Diameter = 3.250000
Terminal-1 C-C Diameter (toroid only)= 8.000000
Terminal-2 Height (center) = 55.400002
Terminal-2 Cord Diameter = 4.250000
Terminal-2 C-C Diameter (toroid only)= 13.750000
Top Voltage = 360.000000

Thanks,
Matt D.

```