Changes

Light as a topic is dealt with in Optics and sound in Acoustics. Visual and auditory senses play an important role as primary carriers of information. Indian shastras referred to light as prakasa, tejas. Indian texts encompass its classification as a fundamental element, its role in the mechanism of vision, detailed calculations of its speed, and advanced physical behaviors such as reflection, refraction, and spectral analysis. Ear recognizes sound related to the Akasha element. Remarkably modern and ancient Indian theory regarding the origin and propagation of sound are largely aligned.  

Light as a topic is dealt with in Optics and sound in Acoustics. Visual and auditory senses play an important role as primary carriers of information. Indian shastras referred to light as prakasa, tejas. Indian texts encompass its classification as a fundamental element, its role in the mechanism of vision, detailed calculations of its speed, and advanced physical behaviors such as reflection, refraction, and spectral analysis. Ear recognizes sound related to the Akasha element. Remarkably modern and ancient Indian theory regarding the origin and propagation of sound are largely aligned.  

* '''Evolution of Vision Theory:''' Early Indian philosophical systems hypothesized that light rays emanated '''from the eyes''' to touch objects, similar to a candle casting light.

* '''Evolution of Vision Theory:''' Early Indian philosophical systems hypothesized that light rays emanated '''from the eyes''' to touch objects, similar to a candle casting light.

* '''Susruta’s Correction:''' This view was corrected around the 1st Century CE by '''Susruta'', who posited that light arriving from an external source hits the retina to illuminate the world—a view later supported by '''Aryabhata''' in the 5th Century.

* '''Susruta’s Correction:'<nowiki/>'' This view was corrected around the 1st Century CE by '''''<nowiki/>''Susruta'', who posited that light arriving from an external source hits the retina to illuminate the world—a view later supported by '''Aryabhata''' in the 5th Century.

* '''Visual Sense Organ:''' The eye is considered the seat of the visual sense organ (''Caksurindriya''), composed primarily of ''Tejas'' particles, allowing it to specifically perceive colour and form (''Rupa'').

* '''Visual Sense Organ:''' The eye is considered the seat of the visual sense organ (''Caksurindriya''), composed primarily of ''Tejas'' particles, allowing it to specifically perceive colour and form (''Rupa'').