---
product_id: 574664774
title: "Young's Double-Slit Experiment, Single Slit, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm"
brand: "laserlands"
price: "A$65"
currency: AUD
in_stock: true
reviews_count: 7
category: "Laserlands"
url: https://www.desertcart.com.au/products/574664774-youngs-double-slit-experiment-single-slit-with-holder-observation-board
store_origin: AU
region: Australia
---

# 50x50mm diffraction grating Precision optical elements Integrated red light source Young's Double-Slit Experiment, Single Slit, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm

**Brand:** laserlands
**Price:** A$65
**Availability:** ✅ In Stock

## Summary

> 🔴 Illuminate the unseen: Master light’s secrets with every slit!

## Quick Answers

- **What is this?** Young's Double-Slit Experiment, Single Slit, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm by laserlands
- **How much does it cost?** A$65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/574664774-youngs-double-slit-experiment-single-slit-with-holder-observation-board)

## Best For

- laserlands enthusiasts

## Why This Product

- Trusted laserlands brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Visualize Wave Physics:** Experience real-time light interference and diffraction phenomena with precision optics.
- • **Safe & Durable Materials:** PET film ensures longevity while avoiding damage from high-power lasers.
- • **Battery-Powered Red Light:** Includes a red light source (2x AAA batteries required) for clear, vivid observations.
- • **Compact & Classroom-Ready:** 50x50mm grating sheet and holder designed for easy setup in any learning environment.
- • **Stimulate Scientific Curiosity:** Perfect for elementary to junior high students to grasp foundational physics concepts.

## Overview

This Young's Double-Slit Experiment kit features a 50x50mm PET diffraction grating sheet, a holder observation board, and a battery-powered red light source. Designed for elementary and junior high students, it enables hands-on exploration of light interference and diffraction, making complex optical physics concepts accessible and engaging.

## Description

Young's Double-Slit Experiment, Single Slit, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm: desertcart.com: Industrial & Scientific

Review: Hasta en la cocina de la casa funciona el experimento. 100% recomendado!
Review: it works as expected. consider additional laser with different color. - it works as expected. it might worth buying another color of laser for educational purposes (ie, to demonstrate it using 2 . thanks. different wavelengths)

## Features

- Optics Elements for Interference Diffraction Optical Physical Experiment.
- Suitable for elementary and junior high school students, who are prepared for physics by understanding the interference and diffraction of light in advance.
- This kit is used in class to illustrate the phenomenon of light interference and stimulate children's curiosity.
- This film is made of PET material, please do not use high power laser to avoid damage to the film.
- Properly increasing the distance between the observation plate and the film can make the diffraction phenomenon more obvious.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CJDX8Y9P |
| Batteries | 2 AAA batteries required. (included) |
| Best Sellers Rank | #104,349 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #41 in Science Classroom Optics Kits |
| Customer Reviews | 4.6 4.6 out of 5 stars (16) |
| Item Weight | 13.1 ounces |
| Item model number | B Plus |
| Manufacturer | Laserland |
| Manufacturer recommended age | 0 - 12 years |
| Product Dimensions | 7.09 x 3.74 x 3.15 inches |

## Images

![Young's Double-Slit Experiment, Single Slit, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm - Image 1](https://m.media-amazon.com/images/I/41bHkk3xA7L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***E on October 14, 2025*

Hasta en la cocina de la casa funciona el experimento. 100% recomendado!

### ⭐⭐⭐⭐⭐ it works as expected. consider additional laser with different color.
*by I***F on May 6, 2025*

it works as expected. it might worth buying another color of laser for educational purposes (ie, to demonstrate it using 2 . thanks. different wavelengths)

### ⭐⭐⭐⭐ Good practical challenge
*by K***A on December 28, 2025*

I measured laser wavelength in course of double slit experiment. While 0.3mm slit gave correct results with an average error 1.7%, 0.2mm slit gave consistently wrong results. Although it would be difficult to confirm, I suspect the slit is labelled wrongly on a diaphragm and is actually 0.25mm wide. Then average error would be then 1.89%, not 18.5%, consistent with other measurments. With both slits I did 9 measurments, distances from 1m to 5m using 635nm laser provided in the set.

## Frequently Bought Together

- Young's Double-Slit Experiment, Single Slit, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm
- Diaphragm with 4 Double Slits of Different Spacings
- Polarized Film Sheets 3 PCS 7.8 x11.8inches/20x30cm Polarizer Linear Polarizing Filter Non-Adhesive for Educational Physics Photography Lighting

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-21*