Kirchhoff Bunsen Spectroscope for Spectral Physics Instruments

The Kirchhoff Bunsen Spectroscope for Spectral Physics Instruments is a laboratory instrument designed for studying optical spectra and the principles of spectroscopy. The system consists of a collimator, telescope, dispersion prism, wavelength-calibrated scale, and supporting structure, providing a complete platform for observing and measuring spectral lines. The apparatus allows students to investigate emission and absorption spectra, measure wavelengths of discrete atomic spectral lines, and gain a practical understanding of spectroscopic techniques. Its high-quality optical components and calibrated wavelength scale ensure clear observations and accurate measurements. The instrument is particularly valuable for atomic physics experiments involving hydrogen spectra. By measuring wavelengths of the Balmer series, students can explore the fundamental relationships governing atomic structure and determine important physical constants through experimental analysis. Physics Lab Experiments from Atico Exports.

1. Study the Construction and Operation of a Spectrometer

• Understand the function of the collimator
• Study the operation of the telescope
• Learn the role of the dispersion prism
• Understand the wavelength measurement system

2. Observe Emission Spectra

• Examine characteristic spectral lines produced by various light sources
• Study emission spectra of atomic elements
• Analyze spectral distributions

3. Observe Absorption Spectra

• Investigate absorption phenomena
• Identify characteristic absorbed wavelengths
• Study material-light interactions

4. Measure Spectral Line Wavelengths

• Determine wavelengths of atomic spectral lines
• Use the calibrated wavelength scale for measurements
• Perform quantitative spectroscopy experiments

5. Study Hydrogen Spectra

• Measure wavelengths of the Balmer series
• Investigate atomic energy level transitions
• Analyze hydrogen emission lines

6. Determine Fundamental Physical Constants

• Use measured spectral data for calculations
• Perform atomic physics investigations
• Explore spectroscopy-based physical relationships

Wavelength Range:

• 400 – 800 nm

Collimator:

Objective Focal Length:

• 150 mm

Telescope:

Objective Focal Length:

• 150 mm

Low-Power Eyepiece:

• 25 mm

High-Power Eyepiece:

• 12.5 mm

Wavelength Calibration Tube:

Objective Focal Length:

• 100 mm

Wavelength Scale Graduation:

400 – 500 nm Range:

• Minimum Graduation: 2 nm

500 – 600 nm Range:

• Minimum Graduation: 5 nm

600 – 700 nm Range:

• Minimum Graduation: 10 nm

700 – 800 nm Range:

• Minimum Graduation: 20 nm

Dispersion Prism:

Prism Angle:

• 60°

Side Length:

• Greater Than 32 mm

Optical Performance:

Resolving Power:

• Resolves Mercury Doublet (577 nm & 579 nm) Using Low-Power Eyepiece

High Resolution Capability:

• Resolves Sodium Doublet (589 nm & 589.6 nm) Using High-Power Eyepiece

Dispersion Power:

• Distance Between 656.3 nm and 434 nm Hydrogen Lines: 9 mm at Telescope Focal Plane

Average Linear Dispersion:

• 24.7 nm/mm

Parts List:

Spectrometer Assembly:

• Quantity: 1

Collimator:

• Quantity: 1

Telescope:

• Quantity: 1

Dispersion Prism:

• Quantity: 1

Wavelength Calibration Scale:

• Quantity: 1

Low-Power Eyepiece:

• Quantity: 1

High-Power Eyepiece:

• Quantity: 1

Instruction Manual:

• Quantity: 1

• High-Quality Optical System
• Easy-to-Read Wavelength Scale
• Suitable for Emission and Absorption Spectrum Studies
• Enables Wavelength Measurement of Atomic Spectral Lines
• Ideal for Optics and Atomic Physics Experiments
• Supports Determination of Fundamental Physical Constants