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Polarizing Filter Stress Demonstrator
Polarizing Filter Stress Demonstrator (Product Code: SLE/PHY/268) is a large-scale optics demonstrator that uses polarising filters to reveal stress patterns in clear plastic pieces, used in physics and engineering classrooms. Its 5 inch polarising sheets are mounted on a graduated frame on a wooden stand, and it is supplied with clear acrylic pieces of different shapes to squeeze between the filters. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM manufacturer, at its own factory in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Scale | Large-scale demonstrator |
| Filters | 5 inch polarising sheets |
| Mounting | Graduated frame placed on a wooden stand |
| Test pieces | Clear acrylic pieces of different shapes (supplied) |
| Demonstration | Clear pieces are placed between the filters and squeezed, and the stress patterns are observed |
| Product code | SLE/PHY/268 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Polarizing Filter Stress Demonstrator Used For?
The demonstrator introduces photoelasticity. Clear acrylic becomes birefringent when it is stressed: polarised light passing through a loaded piece has its polarisation altered by different amounts wherever the stress differs, and viewing through the second filter turns those differences into coloured bands. The bands crowd together near corners, holes and the points where force is applied, so students can see where a shape is most highly stressed — the reason engineers round off corners in brackets and beams. It doubles as a physics demonstration kit for polarisation itself.
Stand the demonstrator in front of a bright, even light source such as a window or a lamp, and squeeze each acrylic piece slowly and steadily so the class sees the pattern grow; release it and the colours fade. Compare the different shapes one after another. Clean the acrylic and the polarising sheets with a soft cloth only, since scratches show up as marks in the pattern.
OEM Manufacturer
ScienceLab, the trading name of Jain Scientific Equipments Private Limited, is the OEM (original equipment manufacturer) of the Polarizing Filter Stress Demonstrator and builds it at its own licensed factory at Saha, Ambala, Haryana, India. Schools, colleges, institutions, dealers and importers receive it factory-direct, with quotations and any later requests for replacement acrylic pieces handled by the maker — ask us.
The company is a registered MSME enterprise (Udyam UDYAM-HR-01-0003714) and ships export orders under Importer-Exporter Code AAECJ8618A issued by the DGFT. Read more on the ScienceLab profile.
Related Physics Lab Equipment
Items that pair well with a lesson on polarisation and stress:
- Polaroid Slides — hand-held polarising slides for simpler polarisation activities
- Bending Stress In a Beam — a mechanical approach to stress in loaded beams
- Light Guide Demonstrator — another large-scale optics demonstration
- Raybox, 12V — a light source for optics demonstrations
More optics and mechanics items are in Physics Lab Equipment.
Frequently Asked Questions
What does the Polarizing Filter Stress Demonstrator show?
The Polarizing Filter Stress Demonstrator shows stress patterns in clear plastic. When an acrylic piece is squeezed between its polarising filters, coloured bands appear that reveal where the stress is concentrated, making invisible internal forces visible to a whole class.
What comes with the Polarizing Filter Stress Demonstrator?
The Polarizing Filter Stress Demonstrator comes with 5 inch polarising sheets mounted on a graduated frame, placed on a wooden stand, and is supplied with clear acrylic pieces of different shapes so that different stress patterns can be demonstrated.
Why do coloured patterns appear in the Polarizing Filter Stress Demonstrator?
Coloured patterns appear in the Polarizing Filter Stress Demonstrator because stressed acrylic changes the polarisation of light passing through it. The amount of change depends on the stress and on the wavelength, so the second filter shows the stress as bands of colour.
Is the Polarizing Filter Stress Demonstrator suitable for a whole class?
Yes, the Polarizing Filter Stress Demonstrator is a large-scale unit with 5 inch polarising sheets, designed for demonstration at the front of a class. Place it against a bright background so students across the room can watch the patterns change.
Who manufactures the Polarizing Filter Stress Demonstrator?
The Polarizing Filter Stress Demonstrator is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory in Saha, Ambala, Haryana, India, and supplied direct to buyers in India and international markets.
How do I request a quotation for the Polarizing Filter Stress Demonstrator?
To request a quotation for the Polarizing Filter Stress Demonstrator, send the product code SLE/PHY/268, the number of units, any related optics items you want and your delivery location through the contact page or the enquiry cart.
Request a Quote
Pricing for the Polarizing Filter Stress Demonstrator comes straight from the manufacturer. Use the contact page or add it to the enquiry cart to start your order.
Last updated: 24 September 2026
