avarakt

do vyaktiyon ki madhya adhorakt (taapeeya) prakaash mein chhaaya chitr

avarakt kirnein, adhorakt kirnein ya infraared vah vidyut chumbakeeya vikirn hai jiska tarang dairghya (vevalenth) pratyaksh prakaash se bada ho evam sookshm tarang se kam ho. iska naam 'adhorakt' isliye hai kyonki vidyut chumbakeeya tarang ke varnakram (spectrum) mein yeh maanav dvaara darshan yogya laal varn se neeche (ya adh:) hoti hai. iska tarang dairghya 750 nm and 1 mm ke beech hota hai. saamaanya shaaririk taapamaan par maanav shareer 10 maaikraun ki adhorakt tarang prakaashit kar sakta hai.[1]

anukram

prayog

avarakt chhaayaankan praay: saamarik evam naagrik, donon hi uddeshyon se kiya jaata hai.

saamarik prayog

  • nireekshan
  • lakshya maargan ya anupathan
  • lakshya bhedan

sabhi raadaar dvaara.

naagrik prayog

  • taapeeya kshamata vishleshan
  • sudoor taapamaan sanvedan
  • laghu doori ka betaar sanchaar
  • spaiktroskopi
  • mausam poorvaanumaan
  • avarakt khagol vigyaan mein prayog kiye jaane vaale doorabeen.

shabd ka mool

jinki tarang dairghya pratyaksh prakaash ke rakt yani laal varn se baङaa ho evam sookshm tarang se kam ho. inki aisa isliye kaha jaata hai, kyonki, inka varnakram liye hota hai vidyut chumbakeeya tarang jinki aavrutti maanav dvaara darshan yogya laal varn se neeche ya adh: hoti hain. inhein aaingreji mein infraared kaha jaata hai.

sandarbh

  1. Dr. S. C. Liew. "Electromagnetic Waves" (English mein). Centre for Remote Imaging, Sensing and Processing. http://www.crisp.nus.edu.sg/~research/tutorial/em.htm. abhigman tithi: 2006-10-27.
radio varnakram
atyadhik nimn aavrutti (ELF) param nimn aavrutti (SLF) atyant nimn aavrutti (ULF) ati nimn aavrutti (VLF) nimn aavrutti (LF) madhyam aavrutti (MF) uchchaavrutti (HF) atyochchaavrutti (VHF) atyant uchchaavrutti (UHF) param uchchaavrutti (SHF) atyadhik uchchaavrutti (EHF)
3 Hz 30 Hz 300 Hz 3 kilo hartj 30 kilo hartj 300 kilo hartj 3 maiga hartj 30 maiga hartj 300 maiga hartj 3 geega hartj 30 geega hartj
30 Hz 300 Hz 3 kilo hartj 30 kilo hartj 300 kilo hartj 3 maiga hartj 30 maiga hartj 300 maiga hartj 3 geega hartj 30 geega hartj 300 geega hartj