Divine Tune-Up includes this Work
PRINCIPLES OF ENERGY MEDICINE
David Feinstein, Ph.D.
recognizes energy as a vital, living, moving force that determines much about
health and happiness. In energy medicine, energy is the medicine, and
energy is also the patient. You heal the body by activating its natural
healing energies; you also heal the body by restoring energies that have become
weak, disturbed, or out of balance. Energy medicine is both a complement to
other approaches to medical care and a complete system for self-care and
self-help. It can address physical illness and emotional or mental disorders,
and can also promote high-level wellness and peak performance. The essential
principles of energy medicine include:
Energies—both electromagnetic energies and
more subtle energies—form the dynamic infrastructure of the physical
The health of those energies–in terms of
flow, balance, and harmony–is reflected in the health of the body.
Conversely, when the body is not healthy,
corresponding disturbances in its energies can be identified and treated.
To overcome illness and maintain vibrant
health, the body needs its energies to:
and have space to continue to move—energies may become blocked due to
toxins, muscular or other constriction, prolonged stress, or
interference from other energies.
Move in specific patterns—generally
in harmony with the physical structures and functions that the energies
animate and support. “Flow follows function.”
all levels, from the microlevel of the double helix of DNA, extending to
the macrolevel where the left side of the brain controls the right side
of the body and the right side to the left.
Maintain a balance
with other energies—the energies may
lose their natural balance due to prolonged stress or other conditions
that keep specific energy systems in a survival mode.
Flow, balance, and harmony can be
non-invasively restored and maintained within an energy system by:
tapping, massaging, pinching, twisting,
or connecting specific energy points on the skin
or swirling the hand over the skin along specific energy pathways
or postures designed for specific energetic effects
focused use of the mind to move
surrounding an area
with healing energies (one person’s energies impacts another’s)
THE EIGHT PRIMARY ENERGY SYSTEMS
People who “see energy” can describe with some
precision the anatomy of the energy body, and their descriptions tend to
corroborate one another. These descriptions are now backed by electromagnetic
measurements, and they also correlate with descriptions of subtle energies found
throughout the world, understood in each culture’s own terms and concepts. The
meridians, chakras, and aura are three terms that have entered our language, but
other energy systems have been identified as well. One of the individuals known
for being able to “see” or clairvoyantly read the body’s energies, Donna Eden,
describes eight energy systems that impact body and mind. The eight systems
4) The Basic Grid
5) Celtic weave
6) The Five Rhythms
7) Triple Warmer
1) The Meridians:
In the way an artery carries blood, a meridian
carries energy. As the body's energy bloodstream, the meridian system
brings vitality and balance, removes blockages, adjusts metabolism, and even
determines the speed and form of cellular change. The flow of the meridian
energy pathways is as critical as the flow of blood. No energy, no life.
Meridians affect every organ and every physiological system, including the
immune, nervous, endocrine, circulatory, respiratory, digestive, skeletal,
muscular, and lymphatic systems. Each system is fed by at least one meridian. If
a meridian's energy is obstructed or unregulated, the system it feeds is
jeopardized. The meridians include fourteen tangible channels that carry energy
into, through, and out of your body. Your meridian pathways also connect
hundreds of tiny, distinct reservoirs of heat and electromagnetic energy along
the surface of the skin. These are your acupuncture points, and they can be
stimulated with needles or physical pressure to release or redistribute energy
along the meridian pathway.
2) The Chakras:
The word chakra translates from the Sanskrit as
disk, vortex, or wheel. The chakras are concentrated centers of energy. Each
major chakra in the human body is a center of swirling energy positioned at one
of seven points, from the base of your spine to the top of your head. Where the
meridians deliver their energy to the organs, the chakras bathe the
organs in their energies. Each chakra supplies energy to specific organs,
corresponds to a distinct aspect of your personality, and resonates
(respectively, from the bottom to the top chakra) with one of seven universal
principles having to do with survival, creativity, identity, love, expression,
comprehension, or transcendence. Your chakras also code your experiences in
their energies, just as memories are chemically coded in your neurons. An
imprint of every emotionally significant event you have experienced is believed
to be recorded in your chakra energies. A sensitive practitioner's hand held
over a chakra may resonate with pain in a related organ, congestion in a lymph
node, subtle abnormalities in heat or pulsing, areas of emotional turmoil, or
even tune into a stored memory that might be addressed as part of the healing
3) The Aura:
Your aura is a multi-layered shell of energy
that emanates from your body and interacts with the energies of your
environment. It is itself a protective atmosphere that surrounds you,
filtering out many of the energies you encounter and drawing in others that you
need. Like a space suit, your aura protects you from harmful energies. Like a
radio antenna, it brings in energies with which it resonates. The aura is a
conduit, a two-way antenna that brings in energy from the environment to
your chakras and that sends energy from your chakras outward. When you
feel happy, attractive, and spirited, your aura may fill an entire room. When
you are sad, despondent, and somber, your aura crashes in on you, forming an
energetic shell that isolates you from the world. Some people’s auras
characteristically reach out and embrace you. Others keep you out like an
electric fence. A study conducted by Valerie Hunt, a neurophysiologist at UCLA's
Energy Fields Laboratory, compared “aura readings” with neurophysiological
measures. The auras seen by eight practitioners not only corresponded with one
another, they correlated with wave patterns picked up by electrodes on the skin
at the spot that was being observed.
4) The Basic Grid:
The basic grid is your body’s foundational
energy. Like the chassis of a car, all the other energy systems ride on
the energy of the basic grid. For instance, when you are lying down, it would
appear to a seer such as Donna that each of your chakras sits upon this
foundational energy. Grid energy is sturdy and fundamental. But severe trauma
can damage and deform the grid, and when this occurs, it does not usually repair
itself spontaneously. Rather, the other energy systems adjust themselves to the
damaged grid, much as a personality may be formed around early traumatic
experiences. Repairing a person’s basic grid is one of the most advanced and
intense forms of energy therapy. If a grid’s structure or a car’s chassis is
sound, you never notice it is there; if it is damaged, nothing else is quite
5) The Celtic Weave:
The body’s energies spin, spiral, curve, twist,
crisscross, and weave themselves into patterns of magnificent beauty. The
equilibrium of this kaleidoscope of colors and shapes is maintained by an energy
system known by different names to energy healers throughout the world. In the
East, it has been called the “Tibetan energy ring.” In yoga tradition, it is
represented by two curved lines that cross seven times, symbolically encasing
the seven chakras. In the West, it is seen in the caduceus, the intertwined
serpentsalso crossing seven timesfound on the staff that is the symbol of the
medical profession. Donna uses the term Celtic weave not only because she
has a personal affinity with Celtic healing, but also because the pattern
looks to her like the old Celtic drawings of a spiraling, sideways infinity
sign, never beginning and never ending and sometimes forming a triple spiral.
Like an invisible thread that keeps all the energy systems functioning as
a single unit, the Celtic weave networks throughout and around the body in
spiraling figure-eight patterns. The double helix of DNA is this pattern in
microcosm. The left hemisphere’s control of the right side of the body and the
right hemisphere’s control of the left side is this pattern writ large.
6) The Five Rhythms:
Your meridians, chakras, aura, and other
essential energies are influenced by a more pervasive energy system. Donna does
not see it as a separate energy but rather as a rhythm that runs through
all the others, leaving its vibratory imprint on physical attributes, health
patterns, and personality traits. Mapped long ago in traditional Chinese
medicine, all of life was categorized into five “elements,” “movements,” or
“seasons” (there is no perfect translationall three terms have been used,
suggesting qualities of being both cyclical and substantial). These energies
were considered the building blocks of the universe, providing a basis for
understanding how the world works, how societies organize themselves, and what
the human body needs to maintain health. Metaphors for describing these five
distinct rhythms have drawn from concrete, observable elements of nature (water,
wood, fire, earth, and metal) and from the seasons (winter, spring, summer,
Indian summer, and autumn). Like the background music during a movie, the
person's primary rhythm, in combination with the changing rhythms of life's
seasons, directs the tone and mood of the entire energy system and sets the
atmosphere of the life being lived.
7) The Triple Warmer:
Triple warmer is the meridian that networks the
energies of the immune system to attack an invader, and it mobilizes the body’s
energies in an emergency for the fight-or-flight-or-freeze response. In carrying
out these critical functions, it operates in ways that are so beyond the range
of any other meridian that some consider it a system unto itself. Although the
exact reasons for the term “triple warmer” are lost in antiquity, its energies
work in conjunction with the hypothalamus gland, which is the body’s thermostat.
The hypothalamus is also the instigator of the body’s emergency response. Like
an army, triple warmer mobilizes during threat or perceived threat,
coordinating all the other energy systems to activate the immune response,
govern the fight/flight/freeze mechanism, and establish and maintain habitual
responses to threat.
8) The Radiant Circuits:
The radiant circuits function to ensure that
all the other energy systems are working for the common good. They redistribute
energies to where they are most needed, responding to any health challenge the
body might encounter. In terms of evolution, the radiant circuits have been
around longer than the meridians. Primitive organisms such as insects move their
energies via the radiant circuits rather than through a meridian system, and the
radiant circuits can be seen in the embryo before the meridians develop. As in
the way that riverbeds are formed, it is as if radiant energies that habitually
followed the same course became meridians. Where the meridians are tied to fixed
pathways and specific organs, the radiant energies operate as fluid fields,
embodying a distinct spontaneous intelligence. Like hyperlinks on a website,
they jump instantly to wherever they are needed, bringing revitalization, joy,
and spiritual connection. If triple warmer mobilizes your inner militia,
the radiant circuits mobilize your inner mom, showering you with healing
energy, providing life-sustaining resources, and lifting your morale.
Reference: Energy Medicine by
Donna Eden (Tarcher/Penguin Putnam, 1999).
"Handout Bank" of the Energy Medicine Institute
Layers of the Aura
This page deals mostly with the Human Aura and its Chakras, with new
information being added from time to time. Different authors' views on the
meaning of the major chakras, and how the Aura and Chakras are involved in
healing are presented. Healing through the Human Energy Field (i.e., the aura),
is also covered.
The Webster's New World Dictionary states that an aura is "an invisible
emanation or vapor" or "a particular atmosphere or quality that seems to arise
from and surround a person or thing". The word "chakra" isn't even in this
dictionary! I hope that the following information will give you a fuller
understanding of these two words. Please check the Glossary
for a definition of any terms or words that you may be unfamiliar with.
Although you may read about auras and chakras and think them to be two
separate objects or manifestations, chakras are a component of an aura and each
interpenetrates the other. Chakras are the means through which a physical body
communicates with its aura and vice-versa. For you are not a physical body with
an aura surrounding you. Rather, your aura and physical body are one unit that
together make up only a small portion of the greater you.
If one thinks of the universe as being a living, energetic and conscious
realm, then auras are the domain of this consciousness and lie in dimensions not
usually accessible to us. By being impenetrable to our normal physical senses,
they cannot be scientifically "proven" to exist. However, recent advances in
science, in medicine, and in psychology have been such that there is much more
acceptance of the mind-body relationship in disease. Perhaps the time is soon
coming when society at large can recognize the credibility, sincerity, and
veracity of clairvoyants who "see" in a different manner. In quantum physics we
have discovered that the human observer can affect the observed, and
consequently the outcome of the experiment. Is it too much of a leap to
postulate that human consciousness, or one's spiritual field or aura, can affect
To better understand ourselves and the interactions between our mind
(emotions) and our body, we need to look at the whole person. The higher
dimensions (or fields) of consciousness must then be included. Although we speak
of levels or dimensions being "lower" or "higher", the terms are used only to
differentiate amongst them. All dimensions co-exist within the same space. They
are not separate at all and influence and interact with each other. Dora van
Gelder Kunz, in her book The Personal Aura explains this interaction as
being "achieved in somewhat the same way that the unique sound of a musical
chord is created by combining different tones, each of which can be
distinguished by a trained ear. The experience of listening to music is the best
analogy I can think of, because the differences between the subtle fields are
essentially harmonic in nature. Each dimension of consciousness has its range of
frequencies, and plays a particular part in the total orchestration of a human
There are as many explanations of the Human Aura and the Chakra System as
there are books on the subject. The following descriptions of the chakras have
been taken from a variety of sources. As in all searches for the truth, please
make your own judgements as to the validity of the material presented.
The word chakra is a Sanskrit word meaning wheel. It is a wheel-like spinning
vortex that interpenetrates the physical body, with the outer ends of each
vortex forming a specific layer of the auric field. The whirling circular motion
forms a cavity or vacuum in the center that draws in anything it encounters on
its particular vibrational level. It is then processed and returned to the auric
field. The major chakras of the human body are the seven chakras that are
aligned along the spinal column. Secondary chakras of importance are located in
the palms of the hands, the soles of the feet, and at major joints in the arms
For the people of antiquity - Egyptians, Chinese, Hindus, Greeks, Romans, and
aboriginals of many lands - the chakras were an integrated part of daily lives.
As these ancient civilizations were conquered, vast libraries of knowledge were
destroyed. Only a few remnants of their information on the chakra system have
survived - either through the preservation of ancient texts by sacred
priesthoods, or orally from generation to generation, as in the traditions of
many aboriginal peoples.
In any study of the anatomy of the aura it is important to understand the
significance of the chakra system. The chakras exist on all levels of the aura
and serve as linking mechanisms between the auric field and the physical body as
well as linking mechanisms between the different levels of the auric field
It is usually believed that the three lower chakras correlate to basic
primary needs - those of survival, procreation, and will - whereas the four
higher chakras are concerned with our psychological makeup -defining love,
communication, and knowledge, and connection with the spiritual realms.
The Seven Major Chakras
We must balance this chakra before moving on to the others. Otherwise our
growth will be without roots, i.e., ungrounded
Other Names: Root, base, muladhara, Kundalini (Sanskrit)
Situated: base of spine and the pubic bone (but encompasses
genitals and reproductive organs)
Area of consciousness: physical body
This includes all physical sensations, such as pain, sensuality, pleasure and
power. Also, our survival (as an individual and as a planet), our need for world
peace and environmental balance.
Key Words: stability, solidity, unity and form.
Physical organ association: gonads, also the glomus coccygeum
or coccygeal body, adrenal gland, the kindeys and the spinal column
Relationship: to the solid part of the body, especially the
Importance: location of the kundalini
Attributes: athletic, cares about survival, sensuality,
pleasure and power
Governs: perception of the physical world, willpower,
motivation and intent
Here we encounter change, for without change we cannot grow.
Other Names: Sacral, sexual, svadhisthana (Sanskrit)
Situated: behind and just below the navel
Area of consciousness: emotional
Change in that we now moving beyond our understanding of ourselves and realize
the awareness of others - desire arises and with it our emotions and sexuality.
Key Words: difference, separation, change, duality, and
Physical organ association: spleen ( Peyer's Patches) as well
as the kidneys and bladder
Relationship: corresponds to the liquid part of the body -
circulation, urinary elimination, and sexual body fluids.
Governs: feelings of sexuality, and creativity
Transformation to a new state occurs through this chakra's basic dynamic
energy and our ability to find a balance between extremes.
Other Names: Solar Plexus, manipura (Sanskrit)
Situated:solar plexus, in the V formed by the ribcage, above
Area of consciousness: mental or intellectual body
This includes thoughts, opinions and judgements.
Key Words: combustion, fire, energy, action, power, and will
Physical organ association: adrenal glands, pancreas, liver,
stomach, as well as the nervous system and the bladder.
Relationship: responsible for the regulation and distribution
of metabolic energy throughout the body, as in digestion.
Governs: emotional issues and issues of personal power
The task of this chakra is to integrate and balance the realms of spirit and
mind with our physical body (matter).
Other Names: Heart, anahata (Sanskrit)
Situated: midway between shoulder blades (over the sternum)
Area of Consciousness: astral body
This is the first level beyond 3-dimensional matter. Here we have the bridge
between the dimensions of matter and the dimensions of spirit. Although we may
refer to the "lower chakras" as being concerned with mankind, and the "upper
chakras" as being concerned with spirituality and God, each chakra is no less
important than the other. For instance, the first chakra has a number of
frequencies (all within the Red vibration), ranging from very low to very high.
The goal is to rise above a chakra's lower frequencies into its higher ones.
Key Words: love, compassion, balance
Physical organ association: thymus gland (immune system), and
the heart, blood, circulatory system, immune system, and the endocrine system.
Relationship: to the heart - to love as a state of being.
Governs: love, compassion, and unconditional acceptance for
Here we have the realm of consciousness where communication occurs, whether
that be within ourselves or to and from another
Other Names: Throat, visuddha (Sanskrit)
Situated: throat area
Area of consciousness: etheric body
This etheric body is the template for the physical body, and represents our
potential for perfection.
Key Words: sound, vibration, communication, and self-expression
Physical organ association: thyroid and parathyroid glands,
lungs, vocal cords, and bronchial apparatus.
Relationship: the throat area where sound is created
Governs: communication, expression of thoughts and feelings
The essence and function of this chakra is to "see" in the sense that we
accept that complete vision will include both darkness and light.
Other Names: Third Eye, Brow, ajna (Sanskrit)
Situated: centre of head, behind forehead
Area of consciousness: celestial body
It is here that we have "sixth sight", or the ability to "see" by way of
clairvoyance. We use this chakra for visualization, receiving insight or
Key Words: intuition, imagination and clairvoyance
Physical organ association: pineal (although some believe it is
the pituitary gland)
Relationship: the storehouse and viewing screen of all visual
input from our two physical eyes and our "third eye" (the etheric organ of
Governs: spirituality and the search for meaning in life,
This chakra represents our belief systems, both conscious and unconscious.
Other Names: Crown, sahasrara (Sanskrit)
Situated:top of head
Colour: white (some believe violet)
Area of Consciousness: ketheric body
This chakra is associated with the spiritual realm. Here is where we merge with
God, the All That Is.
Key Words: enlightenment, knowing and cosmic consciousness
Physical organ association: pituitary gland (although some
believe it is the pineal gland)
Relationship: not of the material world but as a gateway to
Governs: our connection to the concept of "God" or a higher
Rosalyn L. Bruyere writes in her book Wheels of Light that there are 122
smaller secondary chakras. These have the same characteristics as the major
seven chakras, although they are much smaller. They are located primarily
wherever there is a joint in the body. She further states that it is the
connective tissue [Webster's New World Dictionary defines connective tissue
as "tissue found throughout the body, serving to bind together and support other
tissues and organs; it is made up of various kinds of fibrals (small fibers)
contained in a matrix of intercellular material] that is primarily
responsible for carrying electromagnetic energy in our bodies.
Unfortunately we often tend to ignore the lower portion of our bodies, i.e., we
are not grounded. As much of our connective tissue is in our legs and buttocks,
the result is that our internal organs suffer from this lack of incoming energy.
Allopathic - Refers to
contemporary medical approaches (conventional medicine) which utilize drug
therapy, surgery, etc to provide symptom relief.
Astral - This is the layer of the
aura or frequency band located just beyond the etheric. The astral body is
affected by emotionality, thus astral energy is often emotionally-linked. It is
to be noted that there are lower, middle and higher astral planes. It is to the
lower plane that we travel in our dreams and project ourselves during "astral
travel". To the clairvoyant, this field appears to extend fifteen to 18 inches
beyond the physical body. It looks like an ovide, luminous cloud of ever
changing colours and patterns. The texture is flexible, often described as
fluidic, with a clearly defined periphery (although the material dissipates
imperceptibly into the surrounding auric field).
Aura - An energy field that
interpenetrates with and radiates out beyond the physical body. It is made up of
different energy vibrations or frequencies. These, in turn, make up the
physical, etheric, astral, mental, causal, and higher spiritual aspects of the
multidimensional human form. The trained healer "sees", within the aura,
indications as to the spiritual, mental, physical and emotional state of the
Causal - This is the layer of the
aura or frequency band located just beyond the mental level. It is termed
"causal" because, according to esotericism, it carries the Self's (Soul or
Spirit) fundamental intentionality to be, and this is the ultimate
cause of our existence. Seen clairvoyantly, the causal body is pale and
ethereal, with iridescent colours like those of a soap bubble. At this level,
the Self is not constrained by the usual limits of time and space and causality,
but is able to experience the universality of life and to perceive meanings and
interrelationships which are normally not available to us. This level does not
disintegrate after the death of the physical body as the astral and mental
bodies eventually do. It persists from life to life.
Chakra - A Sanskrit word meaning
"wheel". In additional to seven or 8 major chakras associated with the human
body, there are many more secondary chakras that also play a lessor role. The
main function of each chakra seems to be as a step-down transformer for the
higher frequency subtle energies of the aura. These energies are converted into
chemical, hormonal, and cellular changes in the physical body.
Channeling - The phenomenon
whereby an individual allows a higher level of consciousness (higher self,
guardian angel, angelic being, etc.), to come through them, often verbally, as
in trance channeling (Edgar Cayce, Seth, Emmanual, etc.), or as thoughts and
messages received internally or through automatic writing, etc.
Chi - Also spelt Ch'i, Qi or Ki,
it refers to the nutritive subtle energy that surrounds us, that enters our
physical body through breathing, and flows through the body along the
Clairaudience - The psychic
ability of hearing at higher vibrational levels. It is mediated through the use
of the throat chakra.
Clairvoyance - The psychic ability
of seeing higher subtle-energy patterns, i.e. the ability to see the aura with
its colours, thought-forms, shape, etc. It is mediated through the use of the
brow (third-eye) chakra.
Energy Blockage - A general term
referring to the interruption of the natural flow of subtle energy through the
human (or animal) energetic system, often due to abnormal function in one or
more of the chakras.
Etheric - This is the layer of the
aura or frequency band located just beyond the physical. Its most important
function is the transfer of subtle energy from the universal field to the
individual field, and thence to the physical body. It acts as a connecting link
between the physical body and the emotional (astral) and mental bodies (fields),
and furnishes the basic pattern according to which the physical body is built.
To the clairvoyant, the etheric body looks like a luminous web of fine bright
lines of force which, in a healthy person, stand out at right angles to the
surface of the skin. Its colour is usually blue-gray to violet-gray and it
shimmers like heat waves above the earth on hot days. It extends two to 3 inches
beyond the boundary of the physical body.
Holistic - A synergistic approach
which deals with the combined physical, mental, emotional, and spiritual aspects
of human health and illness.
Kundalini - The creative energy of
spiritual illumination which is stored as potential energy within the root or
base chakra. When properly released, it causes activation and alignment of all
the major chakras of the body.
Mantra - A word or sound which,
when repeated to oneself during meditation, helps one to achieve a deeper
meditative state of consciousness.
Mental - This is the layer of the
aura or frequency band located just beyond the astral level, but interpenetrates
both the lower astral and etheric bodies (levels). It is the mental dimension
that is in constant interplay with the other aspects of the personality
throughout life, and its energy permeates every experience, even when we are not
engaged in intellectual pursuits or even consciously thinking. It is ovoid in
shape like the astral, but it is considerably larger and less dense. Its colours
and quality are good indicators of the individual's interests and mental powers,
whether latent or active, for sometimes the capacities we are born with do not
mature during life. The mental body extends about 3 feet beyond the periphery of
the physical body.
Meridian - A microtubular channel
that carries a nutritive subtle energy (chi) to the various organs, nerves, and
blood vessels of the body.
Miasm - An energetic state which
predisposes the organism to future illness, often due to the subtle effects of a
particular toxic agent or noxious micro-organism. Miasms may be acquired or
Nadis - The thread-like subtle
paths of energy flow from the chakras to the various regions of the physical
body. Unlike meridians, which have physical components, nadis are non-physical.
Prana - An ancient Hindu or yogic
term that refers to the nutritive subtle-energy taken in during breathing. Also
referred to as chi or ki.
Quantum Physics - That branch of
science which studies the energetic characteristics of matter at the subatomic
Spiritual Healing - A form of
healing that is mainly associated with the physical and etheric levels. However,
the emotional (astral), mental and higher spiritual levels do also play a part
in the healing process.
Subconscious - That part of the
personality which dwells below the surface of waking consciousness and which
controls automatic human functions. It is subliminally affected by all
information taken in by our senses, and is conditioned or programmed by rewards,
punishments, and messages (such as positive or negative affirmations) that
subtly affect our internal belief system of our worthiness and self-esteem.
Subtle Body - A term referring to
any of the subtle-energy bodies which exist in the higher frequency octaves
beyond the physical, i.e., the etheric, the astral, mental and causal bodies.
Subtle Energy - A general term
that denotes energy that exists outside our physical reality (often referred to
as electromagnetic energy), and thus is not bound by the physical laws. This
energy moves at speeds greater than the speed of light.
Superconscious - That part of the
higher soul structure, of which we are not usually conscious, that nevertheless
makes up part of our personality. It is here that we possess our higher wisdom.
Thought-form - Strong thoughts or
emotions produce a manifestation that has has an actual energy structure that
can be seen clairvoyantly in the auric field.
Vibration - Refers to subtle or
electromagnetic energy in varying frequencies and amplitudes.