313 nm 60 W lamp photons emit

313 nm 60 W lamp photons emit

 

 

313 nm 자외선을 방출하는 60 W 램프는

매초 몇 개의 광자(photons)를 방출하는가?

 

 

A 60 W mercury lamp emits monochromatic radiation of wavelength 313 nm.

How many photons are emitted from the lamp per second?

 

---------------------------------------------------

 

E = nhν = nhc / λ

( 참고 https://ywpop.tistory.com/4964 )

 

 

 

1 W = 1 J/s

( 참고 https://ywpop.tistory.com/12207 )

 

 

 

n = Eλ / hc

= [(60 J/s) (313×10^(-9) m)] / [(6.626×10^(-34) J•s) (2.998×10^8 m/s)]

= [(60) (313×10^(-9))] / [(6.626×10^(-34)) (2.998×10^8)]

= 9.454×10^19 photons/s

 

 

 

답: 9.45×10^19