Image courtesy of: http://solawakening.com/chakra-vibration/
The principle connection points between one state and another of our being are constituted by the chakra whose access can be found along the spine to the top of the head and beyond (the Onios Channel). Knowledge of the Chakra belongs to the Hindu, Jainist and Buddhist traditions spread throughout the West by Theosophy. However certain Western treatises exist in which one can presume there was also a knowledge of these ‘centres of force’ on the part of alchemists and mystical Christians such as Jacob Bhome (1575-1624) and some of his pupils, in particular Johann Georg Gichtel (1638-1710), author of Practical Theosophy (1727).
Every chakra is a multidimensional energetic node, a vortex of vital energy and a refinery of substances and faculties which correspond to specific physical organs, certain ‘powers’ and aspects of our way of being.
This is a simple reference table for the seven traditional chakra with some particular correspondences that I feel are useful for practical purposes.
Many Schools propose models based on a greater number of chakra (let’s not forget that there are hundreds of chakra in the body: many researchers also consider that there are many more ‘major’ chakra than those represented by the Tradition).
At the end of our current examination we will consider eight basic chakra. The eighth chakra – mentioned in various practical studies – is the resultant product of the other seven which are in harmony with one another. It is also defined as ‘mobile’ because it moves around according to determined stimuli and functions. Its principle function is that of ‘turning on’ the other seven, according to specific working methods. Other traditions have identified these fundamental points of force by overlaying the human design with the Sephirotic Tree in different ways.
To conclude, the chakra process and transform our vital energy on the basis of necessary functions. They connect the different physical, psychic, subtle and divine states that constitute our being, nourishing the exercise of our senses and higher faculties. By the latter we mean those inner faculties that originate in the divine spark, which allow a higher awareness to be projected on reality, emancipated from the constraints and the ‘outward appearances’ of the physical senses.
Image courtesy of: http://technoccult.net/archives/2004/12/20/qabalachakra8-dimensions-of-consciousness-mapped/
 The doctrine of the chakra was fully presented for the first time in the West by Sir John Woodroffe, when in 1917, under the pseudonym Arthur Avalon, he published ‘The Serpent Power’, or the translation of the Indian texts Sat-Cakra-Nirupana and Padaka-Pancaka.
 Note the use of the musical scale intonated on A=432 Hz, which corresponds to the entire musical scale intonated on the basis of frequencies in tune with universal and cosmic harmonies, as were employed before the reforms of the 1950’s enforced tuning to 440 Hz, which in fact distorts the use and reception of sound provoking disharmonious effects on the environment and the body.
 Today it is perhaps useful to consider 12 chakra, 12 threads of DNA and 12 ‘rays’. However as it is still in the personal experimentation stage, I feel it is premature to speak of it here. On the question of DNA readers can consult my previous book Nothing but Oneself. Meanwhile, for further information on ‘rays’ - which represent another system of reading reality and physical and spiritual energies – I suggest specific Theosophical and post-Theosophical texts (in particular the works of H.P. Blavatsky, Alice Bailey and Douglas Baker).