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Find the wavelength in the lab of grating spectrometer?

  • Thread starter bamdavis
  • Start date
  • #1
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I did a lab today using this stuff. I need to learn how to find the wavelength of the 1st order of an unknown filament. My data is
600 lines/mm grating
Purple line
15 degrees 30 minutes, 15.5 degrees

using the equation of d sin (angle) = m (lambda)

im supposed to get something like 444nm or 436nm.

i rearranged the equation as d sin (angle)/m = lambda

im definately doing something wrong
 

Answers and Replies

  • #2
Redbelly98
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I did a lab today using this stuff. I need to learn how to find the wavelength of the 1st order of an unknown filament. My data is
600 lines/mm grating
Purple line
15 degrees 30 minutes, 15.5 degrees

using the equation of d sin (angle) = m (lambda)

im supposed to get something like 444nm or 436nm.

i rearranged the equation as d sin (angle)/m = lambda

im definately doing something wrong
Everything looks okay so far. How about doing--and showing us--your calculation?
 

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