Intensity of Light
Summary
Muni Nandighoshvijay explores how Jain philosophy aligns with modern physics regarding light. He notes that Jains accept the scientific position that the intensity of light depends on the number of photons or radiant particles. Intensity varies inversely with the square of the distance between the light source and the receiving surface because as distance increases, fewer photons are received. The author presents formulas expressing intensity (I) as i/d² and as k/d², where k reflects the total photons emitted per unit time and depends on the emissive power of the source. Further relations show I as e·c/(t·d²), incorporating constants such as the Stefan‑Boltzmann constant and the velocity of light. He discusses how photon scattering reduces intensity in proportion to the inverse of the distance and provides a formula for motion-related effects such as the Doppler shift. The article explains that in electrical contexts, light intensity correlates with bulb wattage; higher wattage means greater light intensity. Electrical resistance is expressed as ρl/a, where ρ is specific resistance, l is filament length and a is cross-sectional area. Thus, longer filaments yield higher resistance and higher wattage if the current is constant. The author does not consider temperature effects, arguing that temperature affects photon frequency rather than intensity. Through these explanations, he links Jain acceptance of physical laws with contemporary science, illustrating how Jain thought engages with natural philosophy.
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Conclusion
The article demonstrates that Jain thinkers acknowledge and articulate physical principles of light intensity consistent with modern physics. By presenting formulas relating intensity to photon number, distance, emissive power and electrical resistance, the author shows that Jainism integrates scientific understanding into its worldview. The conclusion underscores that such interdisciplinary engagement helps bridge religious philosophy and science, offering a rational explanation for phenomena like light and illustrating the adaptability of Jain thought.