Many models and colors to choose from, available here:
From Amazon: BUY NOW
Heng Balance Lamp
Heng Balance Lamp: magnetic suspension sculpture and light- with two neodymium magnets on cords suspended by their mutual magnetic attraction. In this design by Zanwen Li, the bottom cord engages the light switch.
Get this laser etched scuplture here:
From Etsy: BUY NOW: 2dFGRS Crystal Sculpture
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Map of the Universe: actual astrophysical data with 221,000 laser etched dots, each dot representing a galaxy of stars and revealing the largest scale structures of our universe. This glass cube contains a 3D mapping of galaxies using the data from the 2dF Galaxy Redshift Survey completed in 2003 which revealed the large scale clumping and voids of galaxies, the true structure of our universe out to about 2.5 billion lightyears. The 3.9 meter wide telescope took about 5 years to collect the spectra of each galaxy in two thin slices of the sky, representing about 4% of the total. The Sloan Digital Sky Survey has since expanded on this to about 40% of the sky now mapped to 12 billion lightyears. Hold and explore this mapped chunk of the universe in your own hands!
Get these this animated angel design and many more here:
From Amazon: BUY NOW: Holiday Specs Holographic Glasses
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See more designes here: Holospecs & Tree Lights
Holographic Angel Specs: put on these spectacles and fairy-like tiny angels will suddenly appear around every point source of light!- fluttering their wings as you tilt your head. The “lenses” in these glasses are actually transmission holograms but with the image located at the farthest point in the depth of field. Made by @americanpaperoptics3d with many more images available(see recent post), and some incorporate animation, like the wings on these angels.
Similar old fashion flicker bulb lights available here:
From Amazon: BUY NOW Flicker Flame Neon Bulb
Get this diffraction grating here to explore light source spectra:
From Amazon: BUY NOW: 500 line/mm diffraction grating
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Neon Flicker Flame Bulb: this charmingly designed night light evokes a theme of an old fashioned gas street lamp- however there is no flame, but instead the light is due to emission spectra from excited neon gas as a result of a discharge electric current from the 120V house mains. The flickering effect comes about because the current flow will increase the temperature near it, which raises the pressure and affects/raises the breakdown voltage near the current- so the glow from one area can only last as long as it takes to heat up and raise the breakdown voltage which then briefly kills the current in that area. In other physics, a diffraction grating shows that the gas is indeed neon, which only emits light at specific emission wavelengths- mostly reds with some bright yellow lines (and a clearly visible green line) at AC house voltages.
Amazing application of high resolution far field holograms. The only available source I know of for projection holograms at this high resolution is this supplier of industrial samples
From MaterialSampleShop.com: Diffractive Optical Element Sample
Get this yellow 591nm laser pointer here:
From eBay: BUY NOW: Yellow Laser Pointer
Need the main colors of laser pointer? Incredibly, you can get 3 (one of each) for under $20 (including S&H):
From Amazon: BUY NOW: Red+Green+Purple Laser Pointer
Note: this site contains affiliate links for which I may be compensated
Yellow Laser Pointer: diode lasers with wavelengths of 589 nm (golden yellow) have recently become less expensive, and will produce stunning far-field transmission holographic images as seen here. The production of yellow frequencies from diode lasers is very complicated and involves two separate infrared laser diodes (1,064 nm and 1,342 nm) which are directed through a nonlinear optical crystal that sums these two IR frequency photons, through a quantum conversion process, into the desired 589 nm photons. So amazing that such tech can fit within the length of a pen and be powered by AAA batteries!
Similar color change gemstones available here:
From Etsy: BUY NOW: Synthetic Alexandrite
Explore propperties of minerals and gemstones with this fun jeweler's flashlight:
From Amazon: BUY NOW: Jeweler's Appraisal Flashlight
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Alexandrite Effect: dramatic color change under different light sources- seen here first under halogen incandescent light and then under cool white LED (similar to sunlight), due to selective absorption of frequencies of visible light. These two faceted crystals are synthetic gems, Tourmalike and Tourmalike+, that dramatically exhibit this effect especially under the illumination of this jeweler’s appraisal lamp that allows one to select white light with different spectra (and also UV). This phenomenon is named for the famous (and expensive) alexandrite gemstone variety of the mineral chrysoberyl.
Get this fun lamp here:
From Amazon: BUY NOW: Levitation Lamp
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Levitation Lamp: tapping the floating spherical magnet turns this LED lamp off and on in this interesting design. The magnet floats a couple centimeters from the surface of the base when plugged in, and feels springy to the touch. Within the base is a control system with adjustable electromagnet coils in a feedback loop with Hall effect sensors which allow for fine tuning of a magnetic field to precisely balance the pull of gravity.
Get a blank bracelet here:
From Amazon: BUY NOW: Color Changing RGB Bracelet
Personalized bracelets avialable here: BUY NOW: Color Changing Personalized Bracelet
Get this diffraction grating here to explore light source spectra:
From Amazon: BUY NOW: 500 line/mm diffraction grating
Note: this site contains affiliate links for which I may be compensated
RGB Lightpipe Rave Bracelet: three LEDs (red, green,blue) combine to make an entire pallet of colors that are transmitted through the translucent band via internal reflection and refraction like a fiber optic cable. A diffraction grating reveals the variety of colors produced is simply a mixture of red, green, and blue (note that white = R+B+G), the same way pixels on your phone or laptop use RGB mixing to produce color images. The bracelet can be personalized and has a magnetic clasp- fun physics for your next rave!