The
following is one method to measure the crystal's termination angles.
The tool needed for this job is an inexpensive
($15) Digital
Angle Finder Protractor. Ref
Digital Angle Finder Protractor
60.0° emitter sending
termination
51.84° transponding receiving termination
Let's say you want to determine how close
the termination angles of 60° and 51.84° (commonly referred to
as roughly 52°) and be able to measure how many degrees difference
off they are from those ideal termination angles.
Note these angles were given by Jen Han
Eredyon for cutting a 6 sided crystal in alignment with the hexagonal
core of the lattice structure.
If your crystal is far off from these
angles it does not mean your Vogel crystal is not effective. This is for
reference only.
It is known that the three interior angles of a triangle will always have
a sum of 180°
60° + 60° + 60°
= 180°
51.84° + 51.84°
+ 76.32° = 180°
Therefore knowing that the angle of the
pyramidal apex as measured with both rulers of the Digital Angle Finder
Protractor flush against the two pyramidal sides as shown below, should
be 76.3° for the transponding end and 60.0° for the emitter end
and.
For a quick rough visual angle check
Set the digital angle ruler to 76.3°
and turn the knob to lock that angle in place.
Place the ruler over the crystal's termination
angle for a rough visual check
Repeat the same procedure for checking
the other termination end for the 60.0°.
Examples:
76.3° rough quick check on 6 sided
looks very off
76.3° rough quick check on 8 sided
looks almost close
76.3° rough quick check on 16 sided
looks very good
60.0° Rough quick check on 4 sided
looks perfect
Note: Dr Marcel Vogel personally cut this 4 sided crystal
above for me as a gift
Measurement of the Angle:
In order to find out the pyramidal angle,
you need to put both rulers completely flush against the flat opposing
pyramidal sides and read the angle measured in order to calculate the
degrees off. Note this works only for all even number sided crystals so
that you have two opposing pyramidal surfaces to measure (i.e. 4,6,8,12,16,24
sided etc.)
Instructions:
Note as you push both rulers down flush
against the pyramidal sides, make sure the apex point of the crystal is
wedged in between the rulers with the absolute minimum of light appearing
above the crystals apex with both rulers pushed down flush on both sides.
Use a sheet of white paper behind to help see and make sure that both
sides are flush with the rulers and no light is appearing from the sides
as well.
For measuring the 51.84° transponding
receiver end the correct reading is 76.3°
Examples:
You measure 68.3°
You subtract 68.3 from 76.32 = 8.02
In order to find the degrees off on one
of the two sides you divide by 2
8.02 /2 = 4.01 degrees too steep of an
angle difference from ideal
Add the 4.01 to 51.84 will give you the
angle of the slope on one side
4.01 + 51.84 = The
angle is 55.85 degrees being too steep at 4.01 degrees off
You measure 64.7°
You subtract 64.7 from 76.32 = 11.62
In order to find the degrees off on one
of the two sides you divide by 2
11.62 /2 = 5.81 degrees too steep of an
angle difference from ideal
Add the 5.81 to 51.84 will give you the
angle of the slope on one side
5.81 + 51.84 = The
angle is 57.65 degrees being too steep at 5.81 degrees off
An example of a negative reading meaning
the pyramidal angle is not steep enough
You measure 79.5°
You subtract 79.5 from 76.32 = 3.18
(a negative number)
In order to find the degrees off on one
of the two sides you divide by 2
3.18 /2 = 1.59 degrees not steep enough
of an angle difference from ideal
Add the 1.59 to 51.84 will give you the
angle of the slope on one side
1.59 + 51.84 = The
angle is 50.25 degrees being not steep enough at 1.59 degrees off
The same exact procedure applies to the
other termination end
For measuring the 60.00° emitter sending
end the correct reading is set to 60.0° instead of 76.3° for the
calculations to determine the termination angle.
