Pay in installments of $12.50 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 25 - Jul 30
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
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)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 16 reviews
Sort
Product Reviews
★★★★★ 5
Great book.
Format: Hardcover
Want to know about the Catholic Church read the Fathers, this is only one of the many. Great book.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 22, 2015
★★★★★ 5
Five Stars
Format: Hardcover
Very informative and should be read by those who seek deeper understanding
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 17, 2016
★★★★★ 5
Five Stars
Format: Hardcover
Beautifully translated, a joy to read
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2017
★★★★★ 4
Translation not Literal!
Format: Hardcover, Format: Hardcover
The fist volume had a more literal translation then the second.
If first Clement and Didache are in your reading list, Shepard of Hermas will fit there too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2018
★★★★★ 5
Good quality
Format: Hardcover
Good Quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2018
recommand products
Portable Expanding Gates, Interlocking, 144" L x 73.5" H, Silver
834.00
North® North Zone™ Replacement Suspension, Pinlock
22.20
Bones STF Nick Tucker Wolf Chain V1 Skateboard Wheels
31.95
Task Lighting LP30QD10NDBBK27 30-1/2" 1000 Lumen Direct Voltage DV Lighted Power Strip, Black Finish, Black Receptacles, 2700K Warm White
239.29
Howard Leight™ Air Soft® Earplugs, Bulk - Polybag
191.00