{"product_id":"multi-wavelength-laser-diffraction-kit-circle","title":"Laser Diffraction Research Kit, Circle (650, 532 and 405 nm, Up to 6 Observers)","description":"\u003cp\u003eThe Circle is the full group kit for the DMT laser experiment (the laser protocol, the laser code experiment) covering 650, 532 and 405 nm for up to six people. The observation was first reported by Danny Goler; the written protocol that grew out of it is free at dmtcode.com.\u003c\/p\u003e\u003cp\u003eThe full bench for up to six observers. Three sources covering 650, 532 and 405 nm, three stands, every grating and slit in the lineup, polarizers, the ray box optics, and a handheld spectroscope to confirm which wavelength is on the wall.\u003c\/p\u003e\u003ch3\u003eMaking the line\u003c\/h3\u003e\u003cp\u003ePut the semicircle lens from the ray box case in the beam with its flat face toward the laser. The dot becomes a continuous horizontal line on the wall; move the piece closer to the source for a longer line. Put a grating in front of the source first to see the ordered points and the line together. Full setup steps are at dmtcode.com\/prepare.\u003c\/p\u003e\u003ch3\u003eWhat is in the box\u003c\/h3\u003e\u003ch4\u003eLaser ray box with 8 acrylic optics, 650 nm\u003c\/h4\u003e\u003cp\u003eMains powered 650 nm ray box with selectable 1, 3 or 5 parallel beams, under 1 mW. Ships in a foam lined case with a concave lens, convex lens, parallel bar, trapezoid prism, right angle prism, mirror, hollow semicircle cup and a solid semicircle lens, plus a magnetic activity mat, laminated angle mat, beam chart, cleaning cloth and instruction guide. The semicircle lens is the piece that turns the beam into a continuous line. Runs from the included 6 V adapter, so it stays on without a stand. Intended for tabletop distances; in a bright room the wall line is faint, so dim the lights.\u003c\/p\u003e\u003ch4\u003eDual red and green laser pointer, 650 nm and 532 nm\u003c\/h4\u003e\u003cp\u003eTwo emitters in one body, selectable by switch. Lets you run the same observation at two wavelengths without re-aligning the bench. Two AAA cells included.\u003c\/p\u003e\u003ch4\u003eViolet laser pointer, 405 nm\u003c\/h4\u003e\u003cp\u003eUnder 5 mW at 405 nm. The shortest wavelength in the lineup. Participants have reported the phenomenon at 405 nm; it is included for comparison against 650 nm, not as a primary source. Batteries included.\u003c\/p\u003e\u003ch4\u003eAdjustable laser pointer stand x3\u003c\/h4\u003e\u003cp\u003eCradle that holds a pen style pointer and presses its button for you, so the beam stays on hands free. Height and angle adjust with a thumb knob.\u003c\/p\u003e\u003ch4\u003eThree window diffraction grating, 100, 300 and 600 lines per mm\u003c\/h4\u003e\u003cp\u003eOne slide, three ruled windows. Put each window in the beam and you see the single dot split into a row of dots spaced further apart as the line density rises. This is the grating that demonstrates diffraction orders. It does not make a line; the acrylic semicircle does.\u003c\/p\u003e\u003ch4\u003eHolographic diffraction gratings, 500 and 1000 lines per mm, 5 of each\u003c\/h4\u003e\u003cp\u003eTwo five packs of 50 x 50 mm slide mounted gratings at 500 and 1000 lines per mm. Wider dot spacing than the three window slide, and enough spares to hand out to a group or replace a fingerprinted one.\u003c\/p\u003e\u003ch4\u003eYoung's slit cards, 3 per pack\u003c\/h4\u003e\u003cp\u003eThree 50 x 50 mm slides with single and double slits of different widths and spacings. Used for the classic two slit interference pattern.\u003c\/p\u003e\u003ch4\u003eSlide carrier x2\u003c\/h4\u003e\u003cp\u003eHolds any 50 x 50 mm slide (gratings, slits, polarizers) upright in the beam.\u003c\/p\u003e\u003ch4\u003ePolarizing filters, slide mounted, 50 pack\u003c\/h4\u003e\u003cp\u003eFifty 50 x 50 mm linear polarizers. Cross two to extinguish the beam, rotate one to explore polarization of the laser output.\u003c\/p\u003e\u003ch4\u003eHandheld spectroscope\u003c\/h4\u003e\u003cp\u003ePocket diffraction spectroscope with a printed wavelength scale. Point it at the laser spot on the wall and read the wavelength directly; useful for confirming which source you are looking at.\u003c\/p\u003e\u003ch3\u003ePackaging and supplier\u003c\/h3\u003e\u003cp\u003eKits are assembled from Arbor Scientific educational components and ship directly from Arbor's warehouse in Saline, Michigan. Expect Arbor branding on the packing slip, tape and individual product boxes. The packing slip does not show item pricing. Meridian Optics Lab is the seller of record; the observation documents live at dmtcode.com.\u003c\/p\u003e\u003ch3\u003eSafety\u003c\/h3\u003e\u003cp\u003eLasers are Class 3a, under 5 mW. Never look into the beam or at a mirror reflection of it. Not for children 12 and under. Educational and laboratory use.\u003c\/p\u003e\u003cp\u003e\u003csmall\u003eAttribution: the laser observation these kits are built around was first reported by Danny Goler (\u003ca href=\"https:\/\/dmtcode.com\/people\/danny-goler\"\u003ehis page on dmtcode.com\u003c\/a\u003e). Mr. Goler has no part in Meridian Optics Lab or this store, has not reviewed these kits, and endorses nothing sold here or published on dmtcode.com. His name appears for credit only.\u003c\/small\u003e\u003c\/p\u003e","brand":"DMT Code","offers":[{"title":"Default Title","offer_id":54376698446134,"sku":"KIT-CIRCLE-MW","price":1090.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0957\/0484\/2550\/files\/P2-7680LaserRayBoxwithLenses2048x2048_5efaa11c-9785-4d65-bb76-6dff2034df3b.jpg?v=1787331957","url":"https:\/\/shop.dmtcode.com\/products\/multi-wavelength-laser-diffraction-kit-circle","provider":"Meridian Optics Lab","version":"1.0","type":"link"}