paraabaingani
 |
vigyaan se sambandhit yeh lekh ek aadhaar hai. aap ise badhaakar vikipeediya ki sahaayata kar sakte hain. |
yeh lekh apni madhyaavastha mein hai, yaani ki ek aadhaar hai. aap ise badhaakar, anuvaad karke, sudhaar kar ke vikipeediya ki madad kar sakte hai.
paraabaingani kiran (paraabaingani likheen jaati hain) ek prakaar ka vidyut chumbakeeya vikirn hain, jinki tarang dairghya pratyaksh prakaash se chhoti ho evam komal ex kiran se adhik ho. inki aisa isliye kaha jaata hai, kyonki, inka varnakram liye hota hai vidyut chumbakeeya tarang jinki aavrutti maanav dvaara darshan yogya baingani varn se oopar hoti hain. ye pruthvi dvaara soorya se paae gaye vikirn ka bhaag hoteen hain. adhiktar maanav inke prabhaav se parichit hote hain, jo ki saurya jalan ya sunburn hota hai. paraabaingani varnakram ke bahut se anya prabhaav bhi hote hain, jinmein laabhadaayak evam haanikaarak, donon hi sanyukt hain.
khoj
inki khoj is prekshan se bahut kuchh juङai hui hain, ki rajat neereya lavan (silver kloraaid) dhoop paङaane par kaale paङ jaate hain. 1801 mein johann vilhaim ritr ne ek vishisht prekshan kiya, ki baingani prakaash ke pare (oopar) apratyaksh kirnein, rajat neereya ke lavan mein bheege kaagaj ko kaala kar deteen hai. usane unhein di-oksidaaijing kirnein kaha jisse ki unki rasaayaneeya kriyaaon par bal diya ja sake saath hi inhein varnakram ke doosare sire par upasthit ooshm kirnon se pruthak pahachaana ja sake. kaalaantar mein ek saral shabd raasaayanik kirnein prayog hua. jo ki unneesaveen shataabdi tak chala, jab jaakar donon ke hi naam badle aur paraabainganievam adhorakt' kahalaae.[1]
Origin of term
naam baingani se pare yaani paraabaingani isliye paङaa kyonki ye pratyaksh prakaash ki sarvaadhik aavrutti evam nyoonatam tarang dairghya vaale baingani se bhi adhik aavrutti waali, saath hi ; kam tarang dairghya waali hoteen hain. inhein aaingrejee mein ultra vauyalet reyj kaha jaata hai.
| 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 |
- ↑ Hockberger, P. E. (2002), "A history of ultraviolet photobiology for humans, animals and microorganisms", Photochem. Photobiol. 76: 561-579, http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=Retrieve%5C&db=pubmed%5C&dopt=Abstract%5C&list_uids=12511035