संदीप्ति
कम तापमान पर उत्सर्जित होने वाले प्रकाश को संदीप्ति (Luminescence) कहते हैं। यह वस्तुतः 'शीत वस्तु विकिरण' (cold body radiation) का एक प्रकार है।
संदीप्ति के प्रकार
- जीवदीप्ति (Bioluminescence) - by a living organism
- रासायनिक संदीप्ति (Chemoluminescence) - resulting of a chemical reaction
- विद्युतरासायनिकसम्दीप्ति (Electrochemiluminescence) - by an electrochemical reaction
- Crystalloluminescence, produced during crystallization
- विद्युतसंदीप्ति (Electroluminescence) - in response to an electric current passed through it
- कैथोडसंदीप्ति (Cathodoluminescence) - where beam of electrons impacts on a luminescent material such as a phosphor
- यांत्रिकसंदीप्ति (Mechanoluminescence) - resulting from any mechanical action on a solid
- Triboluminescence, generated when bonds in a material are broken when that material is scratched, crushed, or rubbed
- Fractoluminescence, generated when bonds in certain crystals are broken by fractures
- Piezoluminescence, produced by the action of pressure on certain solids[1]
- प्रकाशसंदीप्ति (Photoluminescence), absorption of photons causing re-radiation of photons
- स्फुरदीप्ति (Phosphorescence) - delayed re-radiation
- प्रतिदीप्ति (Fluorescence) - where the emitted photons are of lower energy than those absorbed
- रेडियोसंदीप्ति (Radioluminescence) - produced in a material by the bombardment of ionizing radiation
- ध्वनिसंदीप्ति (Sonoluminescence) - from imploding bubbles in a liquid when excited by sound
- तापसंदीप्ति (Thermoluminescence) - when absorbed light is re-emitted on heating.
अनुप्रयोग
- Light Emitting Diode's (LED's) emit light via electroluminescence
- Phosphors, emitting light when irradiated by higher-energy electromagnetic radiation or particle radiation
- Phosphor thermometry, phosphorescence can be used to detect the temperature of an object.
सन्दर्भ
इन्हें भी देखें
- प्रकाश स्रोतों की सूची
- प्रदीप्ति (Illumination)
