Science behind ‘Surya Tilak’ of Ram Lalla at Ayodhya’s Ram Mandir on Navami

According to the experts, this brief but significant phenomenon at Ram Mandir will last for 3-4 minutes and can extend up to 6 minutes.

Sonia Dham
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Courtesy: X (Shri Ram Janmbhoomi Teerth Kshetra)

The 'Surya Tilak' is a fascinating feat of engineering that combines science and religious significance which uses a system of mirrors and lenses to focus sunlight onto the forehead of the Ram Lalla statue during Ram Navami at Ayodhya’s Ram Mandir. The temple was inaugurated on January 22, this year.

According to the experts, this brief but significant phenomenon will last for 3-4 minutes and can extend up to 6 minutes.

The Central Building Research Institute (CBRI) in Roorkee, India, designed this intricate system. The institute has been involved in construction of the temple since years. Besides CBRI, the CSIR-NGRI Hyderabad also gave significant inputs on foundation design and seismic/ earthquake safety.

Here's a breakdown of the scientific process behind the Surya Tilak:

Solar Path Calculations

The first step involved figuring out the exact path of the sun throughout the year, particularly on Ram Navami days. This intricate calculation accounts for the Earth's movement around the sun.

Positioning the Mirrors and Lenses

Once the Sun's path was established, scientists determined the placement and specifications of the mirrors and lenses. This ensured that sunlight would be captured and redirected precisely towards the statue's forehead on Ram Navami.

Opto-mechanical System Design

The scientists designed a special apparatus called the "Surya Tilak mechanism", an intricate system consists of high-quality mirrors, lenses, and strategically positioned vertical pipes. The mirrors and lenses work together to capture and focus the sunlight, while the pipes guide the focused light beam towards the idol.

Calibration and Adjustments

The entire system is meticulously calibrated to account for seasonal variations and the minute shifts in the Sun's position throughout the year. Minor adjustments are made annually to ensure the sunlight lands precisely on the forehead during Ram Navami.

It is worth to be noted that the ‘Surya Tilak’ mechanism is a remarkable example of how science and engineering can be used to create a meaningful experience for devotees. It serves as a unique and symbolic way to celebrate this important Hindu festival.