kaithod kiran nalika

rangeen seeaarati ka kaata hua aarekh:
1. teen ilektraun bandook (ilektraan gan) (laal, hara aur neele fausfar bindu hetu)
2. ilektraun kiran
3. kendran kundali
4. kon dene ki kundaliyaan
5. dhanaagr (enod) sambandh
6. chitr ke anaavashyak laal, hare aur neele bhaag ko chhipaane aur kirnon ko pruthak karne ke liye aavaran
7. fausfar part mein laal, neeli aur harit kshetr
6. fausfar-mandit patal ka aantarik drushya

rinaagr kiran nalika (angreji:kaithod re tube, laghuroop:si.aar.ti.) ek nirvaat nalika hoti hai, jismein ek ilektraun bandook (rinaveshik srot) aur ek pradeept patal hota hai. ismein ilektraun ko tvarit karne aur kon dene ke liye aantarik ya baahya pravidhi (takaneek) ka prayog hota hai. ye nalika patal par ilektraun ki kiran ko daal kar prakaash utsarjit kar chhavi nirmaan karne ke prayog mein aata hai. ye chhavi kisi vidyut sanket tarangaroop (dolanadarshi), chhavi (dooradarshan, ya sanganak patal) ya tejonvesh (raadaar) ke lakshya dikhaane ke liye hoti hai.

ye ek alfa vikirn emitr hai.