Wooden Spectroscope STEM Lab
Product Code : SCL-OS-12568
Quick Answer: The Wooden Spectroscope is a hardwood light-analysis tube with a 1000 lines/mm diffraction grating and an adjustable brass slit. An illuminated nanometre scale inside lets students read the wavelengths of spectral lines across the visible range from 400 nm to 700 nm.
Last updated: October 2026
Key Features
- Seasoned hardwood body with matte black anti-reflective interior
- Diffraction grating, 1000 lines per mm
- Brass slit blades adjustable from 0.1mm to 2.0mm by a knurled screw
- Built-in illuminated nanometre (nm) reference scale
- 1/4-inch tripod thread under the base
Technical Specifications
| Specification | Value |
|---|---|
| Body | Seasoned hardwood, matte black interior |
| Grating | 1000 lines per mm |
| Slit | Brass blades, adjustable 0.1mm to 2.0mm |
| Wavelength range | 400 nm to 700 nm (visible) |
| Scale | Illuminated nm reference scale |
| Dimensions | Length 280mm, base width 65mm, height 75mm |
| Mounting | 1/4-inch tripod thread |
About This Product
Pointing the slit at a lamp and narrowing it to a fine line shows a continuous rainbow from an incandescent bulb but separate bright lines from a fluorescent tube, which students match against the scale. Flame tests are another use: sodium chloride in a Bunsen flame gives a sharp yellow line near 589 nm. The instrument introduces line and continuous spectra, diffraction gratings and how atoms emit light.
Frequently Asked Questions
What does sodium look like through the Wooden Spectroscope?
A sodium flame shows a sharp, intense yellow line at about 589 nm on the internal scale.
How is the slit adjusted?
Turn the knurled brass screw to narrow or widen the slit between 0.1mm and 2.0mm until the light forms a fine line.
Related: Optical Sectional and Funny Mirror STEM Lab.
For a quotation on the Wooden Spectroscope STEM Lab, contact Educational Instrument.
