SHABNUMA-WA-RUZNUM A RARE ASTRONOMICAL INSTRUMENT EXTANT IN TWO SPECIMENS

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SARMA SREERAMULA RAJESWARA; BAGHERI MOHAMMAD

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Journal: TARIKH-E ELM Year:2011 | Volume:- | Issue:9 Page(s): 21-48

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Information Journal Paper

Title

SHABNUMA-WA-RUZNUM A RARE ASTRONOMICAL INSTRUMENT EXTANT IN TWO SPECIMENS

Author(s)

SARMA SREERAMULA RAJESWARA | BAGHERI MOHAMMAD | Issue Writer Certificate

Keywords

ASCENDANTQ3

CULMINATIONQ3

DHRUVABHRAMA-YANTRAQ3

SHABNUMA-WA-RUZNUMAQ3

HORARY QUADRANTQ3

Abstract

In India, there are extant two nineteenth century specimens of an otherwise unknown astronomical instrument called SHABNUMA-WA-RUZNUMA with which observations can be done both in the day and at night. While the Ruznuma is nothing but a sine/horary quadrant, the Shabnuma appears to be inspired by the Sanskrit instrument DHRUVABHRAMA-YANTRA which was invented by Padmanabha in the first quarter of the fifteenth century in Central India. After a brief description of the DHRUVABHRAMA-YANTRA, the two specimens of the SHABNUMA-WA-RUZNUMA are described in detail.

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APA: Copy

SARMA, SREERAMULA RAJESWARA, & BAGHERI, MOHAMMAD. (2011). SHABNUMA-WA-RUZNUM A RARE ASTRONOMICAL INSTRUMENT EXTANT IN TWO SPECIMENS. TARIKH-E ELM, -(9), 21-48. SID. https://sid.ir/paper/146609/en

Vancouver: Copy

SARMA SREERAMULA RAJESWARA, BAGHERI MOHAMMAD. SHABNUMA-WA-RUZNUM A RARE ASTRONOMICAL INSTRUMENT EXTANT IN TWO SPECIMENS. TARIKH-E ELM[Internet]. 2011;-(9):21-48. Available from: https://sid.ir/paper/146609/en

IEEE: Copy

SREERAMULA RAJESWARA SARMA, and MOHAMMAD BAGHERI, “SHABNUMA-WA-RUZNUM A RARE ASTRONOMICAL INSTRUMENT EXTANT IN TWO SPECIMENS,” TARIKH-E ELM, vol. -, no. 9, pp. 21–48, 2011, [Online]. Available: https://sid.ir/paper/146609/en

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