Fresnel'S Biprism With Holder LILT-8300/20

Fresnel's Biprism with Holder is a precision optical instrument used to demonstrate the interference of light and to determine the wavelength of monochromatic light through the measurement of interference fringes. It is an essential apparatus for wave optics experiments in physics laboratories.
The biprism consists of two thin prisms joined at their bases, forming a very small refracting angle along the central line. When illuminated by a narrow slit, it produces two virtual coherent sources of light, resulting in a distinct interference pattern. The apparatus is supplied complete with a holder for secure mounting and accurate alignment on an optical bench.
Specifications:
Available Sizes:
40 × 30 mm
50 × 40 mm
Type: Fresnel's Biprism with Holder
Central Prism Angle: Approximately 180° at the centre line
Features:
High-quality optical glass construction
Produces clear and measurable interference fringes
Mounted in a holder for easy positioning and alignment
Suitable for wavelength determination experiments
Durable and precise laboratory instrument