Glass Prism (Equilateral, 50 × 50 mm)
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Product Code : SCL-LAO-12095
Glass Prism (Equilateral, 50 × 50 mm) (SKU SCL-LAO-12095) is a solid equilateral prism of optical glass with three polished 50 x 50 mm faces, used to split white light into a spectrum and to measure refractive index from the angle of minimum deviation. It fits Class 10 dispersion lessons, the Class 12 prism practical and B.Sc. spectrometer work. Science Lab Supplies is the producer, working from Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and it supplies the prism straight to schools, colleges, contractors and distributors.
Specifications
The equilateral prism's specifications are tabulated individually below. In brief, it is a 60° prism of high-dispersion crown or flint glass, nominal refractive index 1.5170, with three optically polished rectangular faces measuring 50 x 50 mm, frosted triangular ends for handling and chamfered edges.
| Specification | Value |
|---|---|
| SKU | SCL-LAO-12095 |
| Geometry | Equilateral triangular prism (60° angles) |
| Material | High-dispersion optical crown or flint glass |
| Face length | 50 mm |
| Height | 50 mm |
| Refractive index | 1.5170 nominal at 589.3 nm |
| Polished faces | Three rectangular faces, polished to optical flatness |
| Triangular ends | Fine frosted finish |
| Edges | Protective chamfers |
| Surface quality | 60/40 scratch-dig |
| Compatibility | Standard spectrometer prism tables |
| Storage | Velvet-lined rigid container |
| Cleaning wipe | Microfibre lens wipe |
| Data card | Dispersion indices |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Equilateral Glass Prism
Each colour of light is bent by a slightly different amount in glass, so a narrow beam of white light leaving the prism spreads into a spectrum, with violet bent most and red least. The same prism gives the deviation data needed to calculate the refractive index of glass.
- Class 10 science: dispersion of white light into a spectrum and refraction through a triangular prism, traced with pins such as the Optics Experiment Parallax Pin.
- Class 12 physics: plotting angle of deviation against angle of incidence to find the angle of minimum deviation and the refractive index.
- B.Sc. practicals: refractive index and dispersion on a Laboratory Spectrometer prism table.
- Showing total internal reflection once the angle of incidence passes the critical value.
Standard Scope of Supply
The prism is packed in a velvet-lined rigid container with a microfibre optical lens wipe and a technical data card listing dispersion indices. A white light source, spectrometer and drawing pins are not included but can be added to the quotation for a complete dispersion or minimum-deviation practical.
Packing, MOQ and Lead Time
Enquire for a single prism for a spectrometer or for a full set for class practicals. In reply, Science Lab Supplies gives the packing, delivery time and price for the quantity requested, and a ray box or spectrometer can be priced in the same quotation.
Holding a valid Importer-Exporter Code, Science Lab Supplies can ship to buyers in Vietnam, Malaysia, Peru, Egypt, Iraq and Nigeria. A request can reach the team through the contact page or the enquiry cart, and tender-specific supply is described on the lab tender page.
Frequently Asked Questions
Why does the prism split white light into colours?
Different wavelengths have slightly different refractive indices in glass. Violet light is bent more than red light at each face, so the colours separate into a spectrum as they leave the prism.
Will it fit on a spectrometer prism table?
Yes. Its 50 mm footprint sits comfortably on standard prism alignment tables used with classical spectrometers, and the frosted triangular ends give a safe grip when positioning it.
Which faces are polished?
The three rectangular side faces used for light entry and exit are polished to full optical clarity. The top and bottom triangular ends have a fine frosted finish so the prism can be held without marking the working faces.
Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer. This prism is cut, polished and packed at its plant in Saha, Ambala, and the factory answers every enquiry itself, with no trading firm handling the order.
Related Prisms and Light Sources
The items below offer other prism sizes and materials, refraction blocks and the light sources that produce a narrow white beam for dispersion. Any of them can share a quotation with the equilateral prism when a school or college equips its optics practical bench.
- Spectrometer Prism Separates Light — flint glass F2 prism, 32 mm faces, refractive index 1.6200.
- Prism Glass — routine and superior quality equilateral prisms in 38 and 50 mm.
- Acrylic Prism — set of three polished acrylic prisms, 25, 50 and 100 mm long.
- Half-Round Optical Glass Slab — semicircular block with the same 1.5170 nominal index.
- Laser Refraction Chamber Set — laser base with a 75 mm equilateral prism and beam splitter.
- Ray Box Optics Activity Set — 12V 20W halogen or LED ray box with colour overlay tracks.
- Rectangular Optical Light Box — die-cast aluminium box with single, triple and multi-slit plates.
Browse the full Light and Optics range, the Physics Lab range for ray boxes and prism sets, or all physics lab equipment.
Last updated: 9 October 2026
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