व्यासे वारिधिनिहते रूपहृते व्याससागराभिहते । त्रिशरादिविषमसंख्याभक्तमृणं स्वं पृथक्क्रमात् कुर्यात् ॥from the diameter multiplied by four and divided by one reduce and add in turn, the diameter multiplied by four, and respectively divided by the odd numbers three, five and so on. In the previous article in this series, we made a brief acquaintance with the …
Tag Archives: India
It All Started with a Single Word – The Search for Pi and the birth of Indian Calculus in the 1400s CE
व्यासे वारिधिनिहते रूपहृते व्याससागराभिहते । त्रिशरादिविषमसंख्याभक्तमृणं स्वं पृथक्क्रमात् कुर्यात् ॥from the diameter multiplied by four and divided by one reduce and add in turn, the diameter multiplied by four, and respectively divided by the odd numbers three, five and so on. This is an interesting Sanskrit verse, relating the circumference and diameter of a circle, …
Moving from Lunisolar to Solar Calendars
Most states in India follow some version of a lunisolar calendar. Those that settled on their calendar relatively late, like Kerala, tend to have solar calendars. So, what is a solar calendar, and how is it different from a lunisolar one? Solar Years The progress of seasons are a good way to tell time. One …
How to make a lunisolar calendar
Trying to make sense of the various “New Year” celebrations and calendars in India is quite a fun task. India has two different kinds of calendars, broadly described as “lunisolar” (चान्द्रमान) and “solar” (सौरमान). Evidence from the Vedas indicates that a lunisolar calendar of the full-moon (पूर्णिमान्त) variety (which we shall see in a later …
