Lesson Twenty

Lesson Twenty

Purpose: To find the bandwidth of a small living animal.
Materials: A fly, beetle or other insect, Syncrometer, frequency
generator.
Discussion: Persons using a Syncrometer might have already
tried putting a small insect on one of the plates. The circuit
always resonates when you join the circuit at the handhold and
probe. Even the tiniest ant placed in a glass bottle or plastic
baggy will resonate the circuit. Unless it is too far away from the
plate. If it has climbed up the side you will lose the resonance.
At least one foot must be touching the bottom of the bottle. If the
animal is dead this ceases. Obviously the living thing is affecting
the circuit differently before and after death. Is it some kind of a
wave form energy? To find its frequency you must add another
frequency that will reinforce or interfere with the frequency
already on the plate. Adding the generator frequency does just
that.
Method: Use the same method as described in the last Lesson;
however for an ant or fly, start at 1,000 KHz and proceed
upward in big steps like 10 KHz. Use the right test plate which is
controlled by the ON-OFF switch. Always listen to the current
with the switch OFF, first, then ON. Move the frequency up and
repeat. Continue until you hear resonance. Stop immediately.
Rest your skin and go back down to the nonresonant frequency
region. Move up in smaller steps this time. Repeat and repeat
until you feel sure you know just where the resonance begins. But
where does it end?
Start testing well above the suspected range taking big steps
downward until you reach a resonant frequency. Rest and repeat
until you find the upper limit of resonant frequencies. Record the
bandwidth, for example, 1009-1112 KHz.