9 Dravyas

9 Dravyas in the Nyaya School: phil.) elementary substance (9 in the Nyaya , viz {pRthivI} {ap} {tejas} {vAyu} {AkAza kAla} {diz} {Atman} {manas}
 pRthivi, ap, tejas, vAyu, AkAza, kAla, diz, Atman, manas
In Vaisashika eternal substances or Dravyas , viz. soul , time , place , ether , and the 5 atoms of earth , water , light , air , and mind
The theory of macrocosm and microcosm. That is the man is an epitome of the greater universe. It believes that the matter is composed of five elements (Panchamaha buta).They are Prithvi (earth or hardness), AP (water or liquid), Theja (fire or energy), Vayu (gases state of matter) and Akasha (ethereal state of matter). It is said that matter to exist there should be Kala (time) and Dik (space). With the addition of Manas (mind) and Atma (soul), the matter becomes animate. These 9 components are called the Nithyadravyas or eternal elements.It is very difficult to give exact English equivalents to there highly technical Sanskrit terms. In the universe there are the sun, moon and wind, in the same manner in all living things there are the motion, the liquid component, and the heat or energy component. They are called Vatha, Kapha and Pittha respectively. The human body is composed of Pancha maha butas ie the five basic elements. In the human body they are explained in terms of Dosha, Dhatu, and Mala. Life is the union of body, sense organs, mind and soul.The dosha are vata, pitta, kapha. The 7 Dhatus are Rasa (chyle or nutrient fluid), Rakta (blood), Mansa (muscle tissue), and Medas (fats), Asthi (bone, connective tissue), Asthi majja (bone marrow) and Shukra (reproductiveelements or the vital substance). The three main Malas or excretions are purisha (faces) mutra (urine) and sweda (sweat). The doshas when exist in dynamic equilibrium help to maintain the human body in a healthy condition. Then they are called Dhatus. http://eurovedalanka.com/About.html