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Prism – Glass Rectangular Block
Prism – Glass Rectangular Block (Product Code: SLE/PHY/115) is a parallel-sided clear glass block used to study the refraction of light and measure refractive index in school physics practicals. Students trace rays through it with pins or a narrow beam, and its glass has a listed refractive index of 1.52 with all angles accurately worked. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Material | Clear glass, completely bubble-free |
| Refractive index | 1.52 |
| Surfaces | Optically worked |
| Angles | All accurately worked |
| Edges | Slightly bevelled |
| Product code | SLE/PHY/115 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Glass Rectangular Block Used For?
Laid flat on paper, the block's outline is drawn and a ray is traced in and out with pins or a laser beam. Joining the points shows the ray bending towards the normal on entry and away from it on exit, emerging parallel to its original direction but shifted sideways. Measuring the angles of incidence and refraction lets students apply Snell's law and compare their answer with the listed index of 1.52.
The block also demonstrates real and apparent depth: looking down through it, a mark underneath appears raised, and the ratio of real to apparent thickness gives another estimate of refractive index. Because the angles are accurately worked, opposite faces stay parallel, which is what makes the sideways-shift experiment reliable. It is core physics practical equipment for CBSE and state-board refraction experiments.
What to Specify When Ordering
- Block size — the listing does not give dimensions, so state what you need.
- Quantity for pairs or small groups.
- Drawing boards and pins, or a laser pen, for ray tracing.
OEM Manufacturer
ScienceLab, the trading name of Jain Scientific Equipments Private Limited, is the OEM for this rectangular glass block and makes it at its licensed factory in Saha, Ambala, Haryana, India. Institutions and dealers therefore buy from the maker rather than a middleman, and can raise size or quantity questions directly with the manufacturer. Learn more about us on the company profile page.
Related Physics Lab Equipment
Tools that complete a refraction practical with the glass block:
- Board Pin Packet — pins for tracing rays through the block.
- Drawing Board — a firm base for the paper and pins.
- Professional Protractor — measures the angles of incidence and refraction.
- Laser Pen, Red — a visible single ray for quick demonstrations.
- Prism, Clear Glass — a triangular prism for deviation and dispersion.
Find more optics equipment in the Physics Lab Equipment category.
Frequently Asked Questions
What is the refractive index of the Prism – Glass Rectangular Block?
The Prism – Glass Rectangular Block has a listed refractive index of 1.52. Students can compare this with their own value from Snell's law, using the angles of incidence and refraction measured on their ray-tracing sheet.
What size is the glass block?
The dimensions of the Prism – Glass Rectangular Block are not stated in its listing. Please tell us the size your practical requires, or ask through the contact page, and we will confirm the block dimensions with your quotation.
Why does the ray come out parallel but shifted?
The opposite faces of the Prism – Glass Rectangular Block are parallel, so the bending on entry is reversed on exit. The emerging ray therefore travels parallel to the incident ray but displaced sideways, and the displacement grows with thickness and angle of incidence.
Is the block free from bubbles and sharp edges?
Yes. The Prism – Glass Rectangular Block is made of clear glass described as completely bubble-free, with optically worked surfaces and slightly bevelled edges. This keeps traced rays clean and makes the block more comfortable for students to handle.
Who manufactures this glass block?
The Prism – Glass Rectangular Block is manufactured by Jain Scientific Equipments Pvt Ltd, trading as ScienceLab, as the OEM at its own factory at Saha, Ambala, Haryana, India. Orders and quotations are handled directly by the manufacturer.
Do you take bulk and export orders?
Yes. The Prism – Glass Rectangular Block can be supplied in bulk to schools, colleges and dealers across India and international markets. Share the quantity, required size and destination through our contact page to receive a quotation.
Request a Quote
Request a manufacturer's quotation for the Prism – Glass Rectangular Block through our contact page, or place it in the enquiry cart.
Last updated: 24 September 2026
