Semi-Circular Optical Glass Block

Product Code : SCL-LAO-11288

The Semi-Circular Optical Glass Block is a transparent optics component used for studying refraction, critical-angle behaviour and light-ray direction at plane and curved boundaries. It is intended for students, physics teachers and STEM laboratories that require a reusable medium for clear, supervised ray-tracing experiments.

Product Description

The Semi-Circular Optical Glass Block has one flat face and one curved boundary. In a typical experiment, a narrow ray enters through the curved surface along a radius so that refraction at the entry boundary is reduced. The ray then reaches the flat face, where its angle can be observed and measured.

The block supports practical study of Snell’s law, critical angle and total internal reflection. Its material is identified as glass by the product name, but the optical-glass grade, refractive index, radius, thickness, surface polish and dimensional tolerance must be confirmed from the current manufacturing specification.

Key Features

• Semi-circular geometry: Provides both a curved boundary and a plane optical face for controlled ray experiments.
• Glass construction: Uses a transparent glass medium; the exact optical grade requires confirmation.
• Refraction demonstrations: Helps students compare incident, refracted and emergent ray directions.
• Critical-angle investigation: Supports observation of the transition from refraction to total internal reflection.
• Ray-tracing compatibility: Can be used with a narrow-beam source and a marked working sheet or angular scale.
• Reusable optics component: Suitable for repeated school, college and teacher-demonstration sessions.
• No electrical requirement: The block itself requires no power, although a separate light source is needed.

Technical Specifications

What's Included in the Kit

• One Semi-Circular Optical Glass Block
• Protective storage case or packaging
• Angular scale or ray-tracing sheet
• Component holder
• Light source or ray box
• Instruction sheet or activity guide

Applications and Uses

• Tracing light through a curved and plane optical boundary.
• Studying refraction from glass to air and air to glass.
• Measuring incident and refracted angles.
• Investigating the critical angle of the supplied glass.
• Demonstrating total internal reflection.
• Comparing observed ray paths with Snell’s law predictions.

Related apparatus includes the Ray Optics Kit, the verified Prism Glass range, the complete Light and Optics equipment category and broader Physics Laboratory Equipment.

How to Use the Semi-Circular Optical Glass Block

1. Place the glass block on a clean ray-tracing sheet or angular scale.
2. Mark the centre of curvature and the position of the plane face.
3. Direct one narrow light ray toward the curved surface along a radius.
4. Observe the ray as it reaches the plane glass-to-air boundary.
5. Measure the angle of incidence from the normal.
6. Increase the angle gradually and observe the emerging ray.
7. Identify the angle at which the refracted ray approaches the boundary.
8. Continue carefully to observe total internal reflection where applicable.

Safety note: Handle the block by its edges. Do not use chipped glass, and never direct a laser or intense light beam toward the eyes.

Care & Maintenance

• Clean the optical surfaces with a soft, lint-free lens cloth.
• Avoid touching polished faces with bare fingers.
• Do not use abrasive cleaners or place the block against other glass components.
• Store it in padded, dry packaging to prevent scratches and edge damage.

Why Choose Lab Equipments Ambala

Lab Equipments Ambala manufactures and supplies scientific instruments, physics apparatus, optical components and educational experiment kits from Ambala, India. Its published optics range includes prisms, lenses, ray-optics kits and related teaching equipment. The company supplies schools, colleges, universities and international institutional buyers. Purchasers should request the current dimensional drawing, glass specification and optical inspection details before ordering.

Frequently Asked Questions

What is a Semi-Circular Optical Glass Block used for?

It is used to study refraction, critical angle, total internal reflection and ray direction through glass.

Why is the block semi-circular?

A ray directed through the curved face along a radius reaches that boundary normally, reducing refraction at entry and simplifying measurements at the flat face.

What glass is the block made from?

The product name confirms glass construction, but the optical-glass grade and refractive index have not been verified.

Can it demonstrate total internal reflection?

Yes. A suitable ray travelling from the glass toward air can undergo total internal reflection when its incidence angle exceeds the critical angle.

Does the block include a ray box?

No ray box has been confirmed as included. Request an itemised packing list when a light source, scale or holder is required.

Is it suitable for school physics laboratories?

Yes. It is suitable for supervised secondary-school, senior-secondary and introductory college ray-optics experiments.

Request the confirmed radius, thickness, refractive index and glass grade, or explore the Light and Optics laboratory equipment category for related refraction apparatus.