[Pramāṇa](https://indike.org/pramana/) › [Studies](https://indike.org/pramana/ins) › [Science, technology and education](https://indike.org/pramana/ins.science) › [A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D.](https://indike.org/pramana/ins.science.ray-1902) › v2.c34.148 # A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c34.148 A History of Hindu Chemistry from the Earliest Times to the Middle of the Sixteenth Century A.D. v2.c34.148 - **Language:** English ### [v2.c34.148](https://indike.org/pramana/ins.science.ray-1902.v2.c34.148) First, there is fire, or the light-and-heat emitted by the burning log of wood or lamp (अग्निः-दीपः-भौमं तेजः)। Now it is important to note that the flame of a burning log of wood (इन्धन) or an oil-lamp is not pure Tejas, a pure mass of light-and-heat corpuscles. There is chemical union with Earth-particles (particles of the hard penta-Tanmátric substance) acted on by Energy; and then the Tejas corpuscles, light-and-heat particles which are latent (absorbed) therein, come forth as flame (पार्थिवोपष्टम्भेन तदनुगतात् तेजसः अग्निर्भवति—विज्ञानभिक्षु,—प्रवचनभाष्य, Sútra 110, Chap. V.) - [Previous: v2.c34.147](https://indike.org/pramana/ins.science.ray-1902.v2.c34.147) - [Next: v2.c34.149](https://indike.org/pramana/ins.science.ray-1902.v2.c34.149) - [Up: v2.c34](https://indike.org/pramana/ins.science.ray-1902.v2.c34) --- Source: [https://indike.org/pramana/ins.science.ray-1902.v2.c34.148](https://indike.org/pramana/ins.science.ray-1902.v2.c34.148) · Pramāṇa