Precision Prism-Type -- Variable Slit -- Ideal for classroom demonstration and quick laboratory observations, our easy-to-use, palm-sized (4 3/16" L x 7/8" Dia.) instrument provides fast, accurate spectra of any visible light source. Useful for both emission and absorption spectra. Features a precision, 5-element prism train and lens optical system housed in a steel tube. Adjustable slip-type focus and optical slit. As slit opening diminishes, contrast decreases while resolution increases. Fits bar-type holders for optical bench. Visually, spectrum appears approximately 1.25" wide at 3" from eye. -- Specifications: -- Resolution: 4nm (40). -- Dispersion Angle: 24 (approx.). -- Fraunhofer Line Range: 390.0nm to 760.0nm (visible spectrum). |
