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Contents of Physics - 1: Heat and Light : 299
aural colourations from the body (tejolesyā ).
(iii) it may be in the form of extrications of spatial units of soul ( Samudghāta )
( iv ) It may be in the form of homologous atomic variforms called Vargaņās. All these facets are related with some phenomenon associated with taijasa or fire.
Naiyāyikas have also Taijasa with hot touch only with no light effect. They have four forms depending upon sources:
(i) Earthy or material fire like that from wood.
( ii ) Mineral like gold and some other metals ( now radium etc.)
(iii) Digestive fire working in stomach for metabolism.
(iv) Divine fire like electric lightening, sun, moon, planets etc.
However, they presume it to be non-living only. All the Jaina forms of taijasa are in the fine atomic or their aggregatal forms.
The canons state that the different forms of taijasa aggregates (Skandhas ) are found in three varieties : (i) Heat, (ii) light and (iii) electric lightening. This means the term Taijasa is more general and represents the natural energies of heat, light and electricity known in canonical days and produced or obtained from natural sources. Besides, there are sacrificial fires ( three types ) for religious purposes in which sacredness arises due to deity-worship factor. These are taken to be psychologically different from general fires. There are also volitional fires like fire of anger, meditation and sex which indicate their effect like fire'?.
The later Jaina's canons have given following arguments to prove livingness of Taijasa bodies in contrast to the Nyāya school :
(i) The light/hotness is due to vital force ( soul ) because it resides in the body just like light in firefly, hotness in a sick person or planets.
(ii) The fire or taijasa is living because it grows and
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