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The Jain texts refer to the velocity of light, and G.R. Jain has calculated the velocity of light utilising Jain and Hindu data, giving it a value close to the scientific figure of 3x10 cm/sec (Jain N. 1996: p.312).
Magnetism is referred to in the Jain texts in terms of iron bar magnets invisibly attracting other metals.
Functions of Pudgala (Matter) in Relation to Jiva: Pudgalas are necessary for the six functions of a living being: to take food, to produce body, to form sense organs, respiration, speech and mind from the respective variforms. The function of matter is also to contribute to pleasure, suffering, life and death of living beings (Jain S. 1960: 5.20). Of five types of bodies: gross, transformable, projectile, luminous and karmic, only the gross body can be experienced through the sense organs. Luminous and karmic bodies do not interact with other bodies; they can move in the occupied space towards the destination of the rebirth of a worldly soul. The jiva can have at the most four bodies at any one time, because the transformable and projectile bodies cannot co-exist. Usually a worldly being has three bodies: gross (or transformable), luminous and karmic. Only Yogis can produce a projectile body.
The mental functions are also material in nature. When we think, thoughts emanate from the mind through the molecules of mind variforms. Thought forms obtain their configuration from mind variforms and these flit across the mind leaving behind their traces in the form of thought processes. These thought processes have different durations. Some leave mnemonic traces on the cerebrum, through which they have a psychosomatic effect on the body.
The texts describe various types of unions as conjunctions or conjoining and as disjunction, division or separation. The conjoining may be natural or effected by the body, speech or the mind, or may be a physical or chemical union between two similar or dissimilar substances.
Certain conjugations are important to us for our worldly and superworldly life, and there are three varieties: between living (soul) and non-living karma (and quasikarma and other various forms such as the completions of the mind, speech and respiration); non-living entities, and conjugations across categories.
The conjugations between non-living entities may be defined in terms of physical or chemical bonds. They are of five varieties: fastening (like a chain to a vehicle); painting (like paint or colour to a canvas, walls or furniture); joining (joining pieces of timber together with glue); body-joint (bone or ligament joints); embodied joining (this could be defined in terms of volitional bonds through attachment/psychological processes in living beings).
Jain texts describe two general types of bonding between the living and nonliving. Karma is bound to the soul of worldly living beings as karmic particles are charged particles capable of bonding with worldly living beings, and are of varying intensities and qualities.
To break the karmic bond requires a highly charged internal energy that must be generated by living beings through austerities and meditation. The scriptures also describe how energy flows from the adept to others through the fingers via touch, through the eyes and through speech. This energy may have good or ill effects: for example, the
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