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Spectrometer, direct reading
20725.01
Art NO.: 20725.01
- Working wavelength: 400-800nm
- Objective focal length of collimator: 150mm
- Objective focal length of telescope: 150mm
- Eyepiece focal length of telescope: 25mm( low power)
                                     12.5mm(high power)
Objective focal length of drum
calibrated in wavelength:100mm
minimum graduation of wavelength scale:
2nm per graduation for 400-500nm
5nm per graduation for 500-600nm
10nm per graduation for 600-700nm
20nm per graduation for 700-800nm
Prism: refracted edge angle of 60 side length not
less than 32mm error in measuring wavelength:
not greater than 2nm for 400-500nm
not greater than 5nm for 500-600nm
not greater than 10nm for 600-700nm
not greater than 20nm for 700-800nm

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