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Item #33-0240
Young's Slit Cards, 3/pk, with Varying Dimensions
$29.95
Bundle Discount
Bring wave optics experiments to any classroom
Young's Slit Cards give students a direct, hands-on way to observe diffraction and interference. This set of three cards includes single-slit and double-slit configurations with varying slit widths and separations, so students can systematically change one variable at a time and observe exactly how each dimension shapes the resulting pattern.
When paired with a laser pointer, the cards project clear interference fringes onto a screen or wall. Students can measure fringe spacing, test the relationship between slit separation and pattern width, and calculate wavelengths — connecting lab observation directly to the equations they're learning.
Why Teachers Love It
- Variable Dimensions Across Three Cards – Each card presents a different slit configuration, letting students compare single-slit diffraction and double-slit interference patterns side by side and see how slit width and separation affect fringe spacing.
- Quantitative Measurement Ready – Precise slit geometry allows students to use fringe spacing data to calculate the wavelength of their light source, supporting real quantitative wave optics labs.
- Works with Standard Lasers – Compatible with any coherent visible light source, including standard red or green classroom laser pointers.
Product Details
What You Can Teach with the Single and Double Slit Set of 3
Grades 9–10 (Introductory Physics)
- Single slit diffraction: why a wider slit produces a narrower central maximum
- Double slit interference: how two coherent openings produce alternating bright and dark fringes
- Observing how changing slit separation shifts fringe spacing
- Qualitative relationship between slit geometry and the resulting light pattern
High School / AP Physics
- Quantitative use of d sin θ = mλ to predict and verify fringe positions
- Measuring fringe spacing to calculate slit separation
- Comparing diffraction envelope shape across five single slit widths
- Distinguishing single vs. double slit patterns: the diffraction envelope modulating the interference fringes
AP Physics / Engineering / STEM Electives
- Using fringe measurements to calculate the wavelength of the laser source
- Analyzing how slit width affects intensity distribution in the diffraction envelope
- Comparing experimental fringe spacing to theoretical predictions and quantifying error
- Connecting slit geometry to real-world diffraction limits in optical instruments
Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.
Product Specifications
Specs:
Slide dimensions: 50 x 50 mm (all three slides)
Recommended screen distance: 8 m (all three slides)
Double Slit — Various Slit Widths (Cardboard)
Slit separation: 0.33 mm (fixed)
Slit widths: 0.10 mm, 0.15 mm, 0.20 mm
Double Slit — Various Slit Separations (Plastic)
Slit width: 0.15 mm (fixed)
Slit separations: 0.25 mm, 0.50 mm, 0.75 mm, 1.0 mm
Single Slit (Plastic)
Slit widths: 0.1 mm, 0.2 mm, 0.4 mm, 0.8 mm, 1.6 mm
What's Included:
1 x Double slit slide, varying slit widths (cardboard)
1 x Double slit slide, varying slit separations (plastic)
1 x Single slit slide, 5 widths (plastic)
Note: Laser pointer of known wavelength required, not included.
FAQ
No specifications available.
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WARNING: Cancer & Reproductive Harm — www.P65Warnings.ca.gov
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