Changes

Rain gauging was prevalent in India even before Panini (3.4.32) who provides for terms referring to measures of rainfall. The Arthashastra (2.5.7) describes the rain-gauge as a basin with a mouth one aratni (= 24 ahgulas) in width. According to the Brhatsamhita (23.2) the raingauge is to be one hasta or cubit (18 inches) in diameter. When filled to the brim it indicates 50 palas or 1 aadhaka of rainfall. Other texts like Krshiparasara, differ in the measurement of 1 aadhaka and other measures such as drona and dhanus.

Rain gauging was prevalent in India even before Panini (3.4.32) who provides for terms referring to measures of rainfall. The Arthashastra (2.5.7) describes the rain-gauge as a basin with a mouth one aratni (= 24 ahgulas) in width. According to the Brhatsamhita (23.2) the raingauge is to be one hasta or cubit (18 inches) in diameter. When filled to the brim it indicates 50 palas or 1 aadhaka of rainfall. Other texts like Krshiparasara, differ in the measurement of 1 aadhaka and other measures such as drona and dhanus.

Rtuvijnana or climatology developed along with astronomy. The Brhatsamhita, the most standard work of this type, has many chapters dealing with several aspects of the subject. Varahamihira himself refers to some earlier authorities, but their writings are not available in their original form.<ref name=":12">Bag, A. K. (1997) ''History of Technology in India, Vol. 1, From Antiquity to c. 1200 A.D.'' New Delhi: Indian National Science Academy. (Pages 417 - )</ref>

Rtuvijnana or climatology developed along with astronomy. The Brhatsamhita, the most standard work of this type, has many chapters dealing with several aspects of the subject. Varahamihira himself refers to some earlier authorities, but their writings are not available in their original form.<ref name=":12">Bag, A. K. (1997) ''History of Technology in India, Vol. 1, From Antiquity to c. 1200 A.D.'' New Delhi: Indian National Science Academy. (Pages 417 - 432)</ref>

=== दकार्गलम् ॥ Exploration of Water Springs ===

=== दकार्गलम् ॥ Exploration of Water Springs ===