समक्ष दृष्टि स्पेक्ट्रोस्कोप (Direct Vision Spectroscope)
Table of Contents
समक्ष दृष्टि स्पेक्ट्रोस्कोप एक ऐसा उपकरण है , जिसकी सहायता से सीधे प्रकाश-स्त्रोत को देखकर उसके स्पेक्ट्रम का अध्ययन किया जाता है।
सिध्दांत :-
क्राउन काँच के प्रिज्म और फ्लिण्ट काँच के प्रिज्म को संयोजित कर विचलन रहित वर्ण – विक्षेपण की स्थिति प्राप्त की जा सकती है।
रचना :-
Ismein T₁ aur T₂ Pital Ki 2 naliya Hoti Hai. T₁ ke andar T₂ ko chalaya Ja sakta hai .
nali T₂ ke Ek per Uttal Lens tatha dusre सिरे per दूरदर्शी E Laga hota hai.
Iske andar crown काँच एवं फ्लिण्ट Kanch ke Prism is Prakar Lage Hote Hain
Ki unke Kon viprit Disha Mein Ho tatha vichalan rahit varn – vikshepan ki शर्तों ko pura Karen.
प्रायः Crown Kanch ke teen tatha Flint Kanch Ke Do prism hote hain ya crown Kanch ke do tatha flint Kanch ka ek prism hota hai .
yah prism Canada balsam ki sahayata se ek dusre se Sata kar jode Jaate Hain,
Taki प्रिज्मों के Madhya अन्तरापृष्ठ Mein Parivartan Ke Karan hone wale tivrata क्षय ko roka Ja sake.
नली T₁ Mein Ek झिर्री Hoti Hai jisse hokar Prakash andar Pravesh karta hai .
कार्य-विधि :-
जिस Prakash ke स्पेक्ट्रम ka अध्ययन karna hota hai, use झिर्री S mein se Pravesh hone Dete .
नली T₁ ke andar T₂ ko is Prakar chalate Hain Ki झिर्री S Uttal Lens L k e focus per a Jaaye.
इस समय लेंस L से अपवर्तन ke bad nikalne wali किरणें परस्पर समान्तर Hoti Hai .
yah किरणें aage chalkar प्रिज्मों ke समूह से Gujarti Hai Jiske Karan in किरणों का विचलन To Nahin Ho Pata ,
किन्तु varn – vikshepan avashya ho jata hai.
अतः durdarshi main aapke prakash ki Disha Mein Hi spectrum RV prapt ho jata hai.
विशेषताएं :-
1. आपतित प्रकाश की दिशा में ही स्पेक्ट्रम प्राप्त होता है।
2. आकार छोटा होता है। अतः इसे एक स्थान से दूसरे स्थान तक ले जाने में कोई कठिनाई नहीं होती।
दोष :-
1. इसकी सहायता से स्पेक्ट्रम सम्बन्धी माप नहीं ले सकते।
2. इसकी विभेदन क्षमता (Resolving power) कम होने के कारण एक-दूसरे के नजदीक की स्पेक्ट्रमी रेखाओं को पृथक् नहीं किया जा सकता।
उपयोग :-
इसकी सहायता से किसी प्रकाश स्त्रोत से आने वाले प्रकाश का आपतित प्रकाश की दिशा में स्पेक्ट्रम प्राप्त कर स्पेक्ट्रम का गुणात्मक (Qualitative) अध्ययन किया जाता है।
समाक्षीय केबल (Co-axial Cable) किसे कहते हैं?
टेलीफोन लिंक (Telephone links)
प्रकाशिक तन्तु (Optical Fibre) किसे कहते हैं?
प्रिज्म के अपवर्तनांक का सूत्र :-
कोणीय वर्ण विक्षेपण (Angular Dispersion) :-
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