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Description
Laser Double-Slit STEM Box (includes 12 different "Beam-Splitters")This new and improved STEM Box includes everything you need to achieve an interference pattern with a laser in less than 60 seconds, like Thomas Young's classic double slit experiment (we love the following animation of how light is thought to propagate past a double slit, from: File: Double slit experiment. webm Wikipedia) : Your browser does not support the video tag. What's New: No wire or tape needed 12 different widths of "Beam splitter" Hand
This new and improved STEM Box includes everything you need to achieve an interference pattern with a laser in less than 60 seconds, like Thomas Young's classic double-slit experiment (we love the following animation of how light is thought to propagate past a double-slit, from: File:Double slit experiment.webm - Wikipedia) :
What's New:
- No wire or tape needed
- 12 different widths of "Beam-splitter"
- Hand-crafted from Canadian Maple
- Brushed aluminum backing
Included:
(1) Class IIIA, or 3R red laser, serving as a coherent light source. Power of <5mW, and wavelength of ~650nm. Your choice of body colour for the laser (as supplies last).
* Class 3A laser, also known as Class IIIA or 3R laser, is a low-powered laser that emits visible light between 1 and 4.99 milliwatts. It is considered safe when handled carefully, but it may cause eye damage if stared into or viewed with optical devices such as binoculars or microscopes. It is not a skin or material burn hazard. It is the maximum class allowed for laser pointers in the USA and Canada (from Per Chat GPT 4.0, on Mar-24-23).
(2) Double-Slit Assembly, serving as a way to split the coherent laser light beam into a diffraction pattern. Includes 12 very thin wires, from AWG 28 to AWG 50. Handmade in Canada of locally-sourced Canadian Maple. Dimensions are 180mm Length x 31 mm width x 9 mm height. Mass: 41 grams (approx.) (excl. jewel case).
(3) Straight-forward step-by-step illustrated instructions (for an adult) so that you can easily and successfully perform the double-slit experiment at home in less than 60 seconds
(Hint: we find it works best to hold the assembly at least ~1 meter from a wall or other screen, and that anything closer than ~0.5 meters becomes quite difficult to see).
(4) A kid-friendly explanation of the experiment.
Using the materials in this STEM Box, you can see for yourself how different wire widths, distances, orientations, etc. affect the laser interference pattern.
You might also wonder: how does the wavelength of red laser light (about 650nm, or 650 billionths of a meter) compare to the thickness of the 12 different sized wires included in the Assembly (the "beam-splitters")? Table A provides this information, and we've also laser-engraved most of it on each Assembly for easy reference using a Glowforge laser:
We've included in Table A a "Multiple of Wavelength of Red laser light" (far right column) to give users a physical sense of how vanishingly small 650nm really is. We find the tiniest wire (AWG 50) to be barely visible, and yet its 0.025mm thickness is still equal in length to 39 full wavelengths of 650nm red light (!!!).
For a brief demonstration of how the double-slit experiment can be performed at home using a laser, electrical tape, and AWG 32 wire, check out the following video that inspried us early on:
For the truly daring (and make sure you're sitting down for this little dose of reality), check out this video:
And more recently, check out these videos from Floathead Physics, Fermilab, Answers with Joe, and Astrum:
Recommended for Age 12 & Up (with adult supervision)
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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4.6 ★★★★★
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Product Reviews
★★★★★ 5
Beautiful and Comfortable!
Size: 6, Color: Tan Leopard
The shoes arrived on time. They are just as pictured. Good quality and very comfortable. They are also true to size.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 26, 2026
★★★★★ 5
Love Love Love!!!!!
Size: 8, Color: Ivory
Love these shoes!! Very comfortable and lightweight!!! Size is perfect! Beautiful shoes!!
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Reviewed in the United States on June 3, 2026
★★★★★ 5
I will wear these all summer!
Size: 8, Color: Black/Black
These sandals are definitely a platform if you’re looking for a bit of height but they’re also well made, comfortable and in my opinion much firmer support than another popular brand. They look great and they’re versatile. I purchased the black ones the color is a true deep black not gray-ish at all.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
So comfortable!!
Size: 11, Color: Champagne Metallic
Love love love!! Great fit and work for wide-ish feet. Run a little big. Took me a couple days to break them in but now they are great. I bought a second color!!
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Reviewed in the United States on June 2, 2026
★★★★★ 5
VERY comfortable & cute sandal!
Size: 9, Color: Cognac
I needed a pair of comfortable sandals for this summer & I really got lucky with these. I have a lot of arthritis in my feet & even my $100(+) tennis shoes don’t keep the pain away. I may start with tennis shoes at the beginning of the day but 1/2 way through I slip on the Hey Dudes & all is much better!
These sandals are versatile, I have worn them with jeans & shorts. They would also look nice with a skirt. They are cute & comfortable! Not only are they lightweight, it feels like you are walking on air because the sole is so cushioned.
One thing I do want to mention is the fact there is A LOT of room given toward the front of the shoe. The strap that goes over the ball of your foot is looser than I am used to, even with wide feet. You aren’t able to make adjustments. When I first put them on I didn’t think I would like it but after wearing them every day for the past month I know I do.
I would recommend these sandals & wonder if I should stock up in case they stop making this style??
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Reviewed in the United States on May 9, 2026
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