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.
From EP Designlab: BUY NOW: Block Design Resin Lamps
Batteries last 3hours + and each lamp comes with a charging cable
Special discount for @physicsfun followers on all EP Lights
use coupon code: PHYS2019 (10% off)
on all EP Lights LED Bulb Art
Viscous Flow Resin Lamp: art from mixing high viscosity fluids. Each lamp from EP Designlab captures a unique pattern based on the physics of nondiffusive turbulence resulting from the mixing of viscous fluids- in this case silicone resins. When the resins cure the pattern is captured and frozen in place- and these blocks are ready to display with USB rechargeable LED illumination in the base. With this process no two lamps are alike, and all capture intricate mixing physics.
Available as a light bulb with screw in base, or as a USB Lamp
From eBay: BUY NOW Infinity Mirror Bulb
From Amazon: BUY NOW Infinity Mirror Lamps
Get the minimal tabletop base here:
From Amazon: BUY NOW Minimal Lamp Base
Infinity Mirror Light Bulb: illusion of depth from multiple refections. This glass bulb is partially coated inside and out with a thin metal layer. The metal layer is made thinner in a pattern of small circles to produce iridescent colors through thin-film interference effects. When lit from within by white LEDs, multiple reflections on the curved contour create the firework like spray of light and color. So much physics going on in this inexpensive novelty bulb!
Get a levitating moon globe lamp here!
FromAmazon: BUY NOW Levitating Moon Globe Lamp
The Levimoon: this detailed moon globe is an adjustable lamp that levitates! Charged through wireless induction via the base, the moon floats above the Earth while illuminated from the inside to reveal the major features of the lunar surface, and will rotate when given a slight push. This kind of levitation uses a control system with an adjustable electromagnet in a feedback loop with Hall effect sensors which allows for fine tuning of the magnetic field to exactly balance the pull of gravity.
Plasma globes are now available in many sizes and levels of quality. Here is a source for reasonably priced quality globes:
From Educational Innovations: BUY NOW Plasma Globe
From Amazon: BUY NOW Plasma Globes
Plasma Globe: low pressure noble gasses exhibit glow discharge from high voltage, creating plasma filaments that rise upward due to heating- shown here in slow motion. A small high frequency coil at center creates the high voltage potential between the center electrode and the metal coated glass globe. Current flow through the thin gas produces the colorful emission spectra from the gasses
Special discount for @physicsfun followers: use coupon code below!
From EP DesignLab: BUY NOW
EP Lights LED Bulb Art
coupon code: PHYS2019 (10% off)
Viscous Flow Mixing Bulbs: art from mixing high viscosity fluids. Each LED bulb from EP Designlab captures a unique pattern based on the physics of laminar flow folding resulting from the mixing of viscous fluids- in this case silicone resins. When the resins cure the pattern is captured and frozen in place ready to display as illuminated by an array of 5 LEDs in the standard E26 bulb base. With this process no two bulbs are alike, and all capture intricate mixing physics.
Available for under $100 US:
From eBay: BUY NOW
Magnetic Suspension Lamp
From Amazon: BUY NOW
Magnetic Suspension Lamp
Magnetic Suspension Lamp: not only does this lamp defy gravity, the LEDs in the bulb are powered through wireless induction (no batteries needed). This kind of levitation uses a control system with an adjustable electromagnet in a feedback loop with Hall effect sensors which allows for fine tuning of the magnetic field to exactly balance the pull of gravity. If this lamp design is unplugged (or the power goes off) the bulb assembly does not fall, but instead snaps onto the upper armature via strong permanent magnets embedded within. Amazing physics demonstrated by clever engineering!
Inexpensive and a few models to choose from:
From eBay: BUY NOW Infinity Mirror Sphere Lamp
Also sold as a lightbulb:
From Amazon: BUY NOW Infinity Mirror Firework Bulb
Infinity Mirror Lamp: illusion of depth from multiple refections. This glass bulb sphere is partially coated inside and out with a thin metal layer. The metal layer is made thinner in a pattern of small circles to produce iridescent colors through thin-film interference effects. When lit from within by white LEDs, multiple reflections on the curved contour create the firework like spray of light and color. So much physics going on in this inexpensive novelty lamp!
These are fairly inexpensive and use two AA batteries. Great for a rave or a physics class!
From Amazon: BUY NOW Plasma Disk
From eBay: BUY NOW Plasma Disk
Larger versions available here:
From eBay: BUY NOW Luminglas Plasma Disk
Luminglass: with audio modulation. Tesla (high frequency) coil within a noble gas discharge tube just like a plasma globe- these lightning disks also have phosphor covered dielectric pellets that create most of the light when excited by current flow. The intro to Tool's Sober provides audio with sufficient dynamic range to demonstrate the modulation effect.
This fairly inexpensive hue lamp is made by IKEA and is available here:
From Amazon: BUY NOW
DIODER Variable Color Lamp
Explore the physics of light and color with this excellent kit:
From Amazon: BUY NOW
Thames & Kosmos Optical Science Kit
Variable Hue Lamp: Seeing color is both about the source of illumination and the reflective and absorptive properties of the observed object. These colorful images look drastically different as this illumination source cylces through a wide range of hues via variable mixtures of red, green, and blue wavelengths. A demonstration that explores some of the complexities underlying the physics and psychophysics of color vision.
Get one here:
From Amazon: BUY NOW LED Newton's Cradle
From eBay: BUY NOW LED Newton's Cradle
Modern LED Newton's Cradle: the classic physics demonstration of conservation of momentum and energy cleverly updated with LEDs and light sensors that synchronize color with changes in motion.
Vintage fiber optic lamps like this one are available on eBay most of the time:
From eBay: BUY NOW Vintage Fiber Optic Flower
Fiber Optic Cactus Lamp: this vintage 1980s fiber optic lamp was found at a local thrift store- and it still works! The fiber bundle is illuminated by a lamp in the base and the color shifting patterns are generated by a rotating color wheel placed between the light source and the fiber optic bundle. Fun physics at a thrift store price.
This plasma mug was sold in the 1990s but can be found on eBay often:
From eBay: BUY NOW: Plasma Mug
An improved and beautiful version sold here:
From Etsy: BUY NOW: Plasma Mug
Tesla’s Plasma Mug: this double walled glass mug glows orange from the excitation spectrum of neon gas at low pressure. The base contains a high frequency transformer that generates high voltage electric fields (but at very low current) from 8 AA batteries- which excites the neon to glow, and also serves as a coaster. This crazy item was produced by Can You Imagine Toys in the 1990s- perhaps Tesla himself would have served a good beer in this mug!
Available here in many colors and sizes:
From Amazon: BUY NOW
Lava Lamps
Lava Lamp in Time-lapse: 15 minutes compressed into 15 seconds gives a different perspective on the processes involved in this classic physics toy from the 1960's. Mesmerizing physics of convective heat flow, Archimedes principle, and immiscible liquids. Manufactured by Mathmos and invented in 1963 by Edward Walker of Dorset England, the Lava Lamp is still popular today and is available in a wide range of colors.
These lamps can often be found on eBay:
From eBay: BUY NOW Fiber Optic Lamps
Fiber Optic Galaxy Lamp: a vintage 1970s fiber optic lamp with a chrome “UFO” base. Note the beautiful spherical symmetry of the fiber spray- they don’t make them like this anymore! The fiber bundle is illuminated by a lamp in the base and the color shifting patterns are generated by a rotating color wheel placed between the light source and the fiber optic bundle. Fun physics at a thrift store price.
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
Need a laser pointer? Incredibly, you can get 3 (one of each color) for under $20 (including S&H):
From Amazon: BUY NOW Red+Green+Purple Laser Pointer
Diffractive Optical Element: images produced by constructive and deconstructive interference of coherent laser light. The patches of microstructure on the surface of this transparent plastic are far field holograms- transmission holograms, but with the image at infinity. Side by side images from two different laser wavelengths (red 635 nm, green 520 nm) shows clearly the red image is larger than the green since diffraction angle is proportional the wavelength. So much physics here!