---
product_id: 26654309
title: "Diaphragm with 4 Double Slits of Different Spacings"
brand: "3b scientific"
price: "€ 23.56"
currency: EUR
in_stock: true
reviews_count: 13
category: "3 B Scientific"
url: https://www.desertcart.pt/products/26654309-diaphragm-with-4-double-slits-of-different-spacings
store_origin: PT
region: Portugal
---

# Precise 0.15 mm slit width 4 slit spacings from 0.25 to 1.00 mm Compact 50x50 mm² slide frame Diaphragm with 4 Double Slits of Different Spacings

**Brand:** 3b scientific
**Price:** € 23.56
**Availability:** ✅ In Stock

## Summary

> 🔬 Unlock the wave-particle mystery with every laser beam!

## Quick Answers

- **What is this?** Diaphragm with 4 Double Slits of Different Spacings by 3b scientific
- **How much does it cost?** € 23.56 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/26654309-diaphragm-with-4-double-slits-of-different-spacings)

## Best For

- 3b scientific enthusiasts

## Why This Product

- Trusted 3b scientific brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact & Durable:** Small 50x50 mm² slide fits seamlessly into any teaching setup or lab environment.
- • **Precision Engineered:** Micron-level slit widths and spacings ensure accurate diffraction demos every time.
- • **Instant 'Aha!' Moments:** Set up in seconds, reveal complex physics phenomena that spark curiosity and engagement.
- • **Ideal for STEM Projects:** Perfect for educators and students exploring wave-particle duality and optics.
- • **Visualize Quantum Waves:** Double slit interference patterns made stunningly simple with a red laser pointer.

## Overview

This teaching diaphragm features 4 double slits with precise spacings (0.25, 0.50, 0.75, 1.00 mm) and a slit width of 0.15 mm, mounted on a compact 50x50 mm² slide. Designed for educational diffraction experiments, it enables clear visualization of interference patterns using a red laser pointer, making it an essential tool for physics educators and STEM enthusiasts.

## Description

Photographic diffraction objects in a slide frame. Dimensions: 50 x 50 mm². Slit width [mm]: 0.15. Slit spacing [mm]: 0.25; 0.50; 0.75; 1.00. No. of slits: 2.

Review: Excellent with red laser showing double slit interference (waves) patterns! - Use red laser pointer, mount slide, position laser light on double slit, and, ta da!, get a great interference pattern demoing the wave-like behavior for light. So simple, so weird, so cool.
Review: High quality slide. Great Science project! - I purchased this as I have an interest in quantum mechanics. This slide plus a laser pointer very accurately show the quantum effect showing light as both a particle and a wave. This is a great part of a shcool scientific project.

## Features

- package height :0.508 cm
- package length :10.921 cm
- package width :5.08 cm
- Product type :TEACHING EQUIPMENT

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KWZ5WQ0 |
| Best Sellers Rank | #304,235 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Diaphragm Seals |
| Date First Available | June 5, 2014 |
| Item Weight | 0.211 ounces |
| Item model number | U14101 |
| Manufacturer | 3B Scientific GmbH |
| Product Dimensions | 0.39 x 1.97 x 1.97 inches |

## Images

![Diaphragm with 4 Double Slits of Different Spacings - Image 1](https://m.media-amazon.com/images/I/41mMTZNva9L.jpg)
![Diaphragm with 4 Double Slits of Different Spacings - Image 2](https://m.media-amazon.com/images/I/61CI00NmNlL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent with red laser showing double slit interference (waves) patterns!
*by A***6 on February 26, 2023*

Use red laser pointer, mount slide, position laser light on double slit, and, ta da!, get a great interference pattern demoing the wave-like behavior for light. So simple, so weird, so cool.

### ⭐⭐⭐⭐⭐ High quality slide. Great Science project!
*by S***H on July 30, 2021*

I purchased this as I have an interest in quantum mechanics. This slide plus a laser pointer very accurately show the quantum effect showing light as both a particle and a wave. This is a great part of a shcool scientific project.

### ⭐⭐⭐⭐⭐ Multiple universes
*by J***S on July 29, 2021*

I used this to show my wife evidence of multiple universes. I think in the one we live in, she doesn't understand. But, in some other universe I know she gets it!

## Frequently Bought Together

- Diaphragm with 4 Double Slits of Different Spacings
- American 3B Scientific U14100 Diaphragm with 3 double slits of different widths)
- Single Slit Double Slits, with Holder Observation Board Red Light Source, Optics Elements, Optical Physical Experiment Kit, Interference Diffraction Grating Sheet 50 * 50mm

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**Shop now:** [https://www.desertcart.pt/products/26654309-diaphragm-with-4-double-slits-of-different-spacings](https://www.desertcart.pt/products/26654309-diaphragm-with-4-double-slits-of-different-spacings)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-02-07*