Martin HamiltonGuess we doin #dichroic #tetrapods now...
👜 creature to 
GeekProjects NewsNanotechnology in Ancient Rome? There Is Evidence https://hackaday.com/2024/01/26/nanotechnology-in-ancient-rome-there-is-evidence/ #chemistryhacks #nanotechnology #dichroicglass #nanoparticles #Lycurguscup #dichroic #Lycurgus #cagecup #silver #gold
Christof Maupin, Glass ArtistSome sparkly, shiny bits for this otherwise soggy and dreary Tuesday here in the Willamette Valley of Oregon. https://www.etsy.com/listing/1412444993/handmade-kiln-fired-fused-glass-pendant?click_key=839cc5e5b0f2352d888aa167bbb38ebe637351d2%3A1412444993&click_sum=58d04c3e&ref=shop_home_active_1&frs=1 #MastoArt #dichroic #dichroicglass #glasspendant #glassjewelry #artyoucanwear #glassart #glassartist #kilnglass #fusedglass #wilamettevalley #oregon #salemoregon #oregonart #oregonartist
🇨🇦🇩🇪🇨🇳张殿李🇨🇳🇩🇪🇨🇦I don't love these #ttrpg #dice as much as I love my literal gem dice, nor even quite as much as my #dichroic dice, but they're still giving me a gleeful grin.
(Pity I can't upload the video showing them in action!)
(Pity I can't upload the video showing them in action!)
Although my focus is lampwork / torchwork glass, I've been dabbling in fused glass, as well. Here's a new pendant with a silver-blue dichroic background and a single slice of millefiori cane set in the center. https://www.etsy.com/listing/1402196809/handmade-fused-glass-pendant-with?click_key=474b89ea5e879cead94a62fe8ecbee21f555fd7f%3A1402196809&click_sum=6ce1ed81&ref=shop_home_active_1&frs=1 #glass #pendant #dichroic #DichroicGlass #FusedGlass #GlassArt #GlassArtist #handmade #pendant #jewelry #MastoArt
Quadrapop 🎨 🐈🐓🌱🇦🇺#QTStudio #collage #acrylic #glitter what you can’t see in the photo is the subtle glint of #dichroic glitter in the top half. One of the things I enjoy about making physical art is to add aspects that do not translate outside of in person experience of the work. Photos never see the work as the naked eye will. Digital images by their very nature of pixelisation reduce information and experience. #ArtHustory #historigraphy #aesthetics
hackaday unofficialAll About Dichroic Optical Filters
[IMSAI Guy] presents for your viewing pleasure, a nice video on the topic of optical filters and mirrors. (Video, embedded below) The first optical device is a simple absorption filter, where incoming light is absorbed in a wavelength-selective manner. Much more interesting however is the subject of interference or dichroic filters. These devices are constructed from many thin layers of a partially reflective material, and operate on the principle of interference. This means that photons hitting the filter stack will interfere either constructively or destructively giving the filter a pass or stop response for a particular wavelength.
As [IMSAI Guy] demonstrates, this makes the filters direction-specific, as photons hitting the stack at a different angle will travel slightly further. Longer travel means the interference effect will be different, and so will the filtering response. You can see this by playing around with one in your hands and seeing the color change as your rotate it. Dichroic filter films can also make for some stunning optical effects. Very cool stuff.
By creating a filter stack with a wide enough range of inter-layer thicknesses, it's possible to construct a mirror that covers the full spectrum with excellent reflectivity. Since you can tune the layers, you can make it reflect any range of wavelengths you like. One thing we've not seen before is a wedge-like optical filter device, where the layer thicknesses progressively increase lengthways, creating a variable optical frequency response along the length. We guess this would be useful for diagnostics in the field, or perhaps for manually tuning a beam path?
We like the applications for dichroic films - here's an Infinity Mirror 'Hypercrystal'. If you don't want to buy off-the-shelf films, perhaps you could sputter yourself something pretty?
