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Physics describes the real magic of the universe. Visit my store! ➡️ Follow this link:

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play_circle_filled Shadow Stereographic Projection: 3D printed sculptures that cast geometric shadows. When illuminated by a point source of light (placed at the top pole of the sphere) the shadow cast by the rays of light represent a one to one mapping of the points on the sphere to points on the plane- creating a square grid, and a honeycomb of regular hexagons. Stereographic projection is often used in representing the geography of the globe of our planet on to a flat map. Mathematical art by Henry Segerman. ➡ Follow the link in my profile for info on where to get these 3D prints and other amazing items featured here on @physicsfun #physics #physicstoy #physicsfun #math #mathtoy #mathstoy #mathematicalart #shadow #3dprinting #stereographicprojection #science #grid #honeycomb #scienceisawesome.

Shadow Stereographic Projection: 3D printed sculptures that cast geometric shadows. When illuminated by a point source of light (placed at the top pole of the sphere) the shadow cast by the rays of light represent a one to one mapping of the points on the sphere to points on the plane- creating a square grid, and a honeycomb of regular hexagons. Stereographic projection is often used in representing the geography of the globe of our planet on to a flat map. Mathematical art by Henry Segerman. ➡ Follow the link in my profile for info on where to get these 3D prints and other amazing items featured here on @physicsfun #physics #physicstoy #physicsfun #math #mathtoy #mathstoy #mathematicalart #shadow #3dprinting #stereographicprojection #science #grid #honeycomb #scienceisawesome ...

play_circle_filled Ambiguous Object Illusion Mug: circle or a square? It’s all a matter of perspective and viewing angle. The complex shape allows for both to be perceived and is based on the work of mathematician Kokichi Sugihara of Meiji University in Japan, the inventor of this illusion and art form. ➡️Follow the link in my profile for info about where to get this 3D print and other amazing items featured here on @physicsfun #illusion #ambiguouscylinderillusion #ambiguouscylinder #geometry #mirrorreflection #physics #ambiguousobject #kokichisugihara #physicstoy #math #mathtoy #mathstoy #optics #opticalillusion #3dprinting #perspective #science #scienceisawesome.

Ambiguous Object Illusion Mug: circle or a square? It’s all a matter of perspective and viewing angle. The complex shape allows for both to be perceived and is based on the work of mathematician Kokichi Sugihara of Meiji University in Japan, the inventor of this illusion and art form. ➡️Follow the link in my profile for info about where to get this 3D print and other amazing items featured here on @physicsfun #illusion #ambiguouscylinderillusion #ambiguouscylinder #geometry #mirrorreflection #physics #ambiguousobject #kokichisugihara #physicstoy #math #mathtoy #mathstoy #optics #opticalillusion #3dprinting #perspective #science #scienceisawesome ...

play_circle_filled Tesla’s Egg of Columbus: a copper ellipsoid egg (PhiTOP) mysteriously spins and stands upright in this modern version of Tesla’s famous demonstration from the 1893 World’s Fair in Chicago that first showcased the principles behind wireless power transfer and his AC induction motor. Rotating magnetic fields from under the wooden platform induce electric eddy currents to flow in the copper PhiTOP- these currents then create their own magnetic field which oppose the initial fields underneath and pushes the PhiTOP to spin. This version I built differs from Tesla’s in that the rotating magnetic fields are created by, well, a pair of rotating neodymium magnets (revealed by lifting the top platform in this model). Credit to astrophysicist Kenneth Brecher, the creator of the PhiTOP, and this unique means of using a common lab magnetic stirrer to create the induced currents. Finally, the ellipsoid top stands up vertically (when spun with sufficient rotational velocity) due to physics similar to that of the tippe-top. ➡️ Follow the link in my profile for info on where to get a PhiTOP and other amazing items featured here on @physicsfun #ellipsoid #oblateellipsoid #conicsections #tippetop #torque #angularmomentum #lenzslaw #magneticstirrer #magneticinduction #tesla #teslasegg #ACMotor #eggofColumbus #rotationalinertia #PhiTOP #physics #physicstoy #flip #flipover #precession #spin #spinning #top #spinningtop #science #scienceisawesome.

Tesla’s Egg of Columbus: a copper ellipsoid egg (PhiTOP) mysteriously spins and stands upright in this modern version of Tesla’s famous demonstration from the 1893 World’s Fair in Chicago that first showcased the principles behind wireless power transfer and his AC induction motor. Rotating magnetic fields from under the wooden platform induce electric eddy currents to flow in the copper PhiTOP- these currents then create their own magnetic field which oppose the initial fields underneath and pushes the PhiTOP to spin. This version I built differs from Tesla’s in that the rotating magnetic fields are created by, well, a pair of rotating neodymium magnets (revealed by lifting the top platform in this model). Credit to astrophysicist Kenneth Brecher, the creator of the PhiTOP, and this unique means of using a common lab magnetic stirrer to create the induced currents. Finally, the ellipsoid top stands up vertically (when spun with sufficient rotational velocity) due to physics similar to that of the tippe-top. ➡️ Follow the link in my profile for info on where to get a PhiTOP and other amazing items featured here on @physicsfun #ellipsoid #oblateellipsoid #conicsections #tippetop #torque #angularmomentum #lenzslaw #magneticstirrer #magneticinduction #tesla #teslasegg #ACMotor #eggofColumbus #rotationalinertia #PhiTOP #physics #physicstoy #flip #flipover #precession #spin #spinning #top #spinningtop #science #scienceisawesome ...

play_circle_filled Mirror Anamorphic Lenticular Cup & Saucer: a toucan sits in a nest of flowers, revealed only when the cylindrical mirrored cup is put in place. This beautiful design by Luycho uses both mirror anamorphic reflection and an accordion type lenticular dual image. Art meets math and physics! DM @luycho for details. ➡️ Follow the link in my profile for info on where to get this and many other amazing items featured here on @physicsfun #reflection #geometry #cube #luycho #optics #light #snellslaw #kineticart #physics #physicstoy #science #math #mathtoy #toucan #anamorphos #art #physics #physicstoy #mirror #cylinder #science #scienceisawesome #kineticart #anamorphosis #mirrorAnamorphosis #mathstoys.

Mirror Anamorphic Lenticular Cup & Saucer: a toucan sits in a nest of flowers, revealed only when the cylindrical mirrored cup is put in place. This beautiful design by Luycho uses both mirror anamorphic reflection and an accordion type lenticular dual image. Art meets math and physics! DM @luycho for details. ➡️ Follow the link in my profile for info on where to get this and many other amazing items featured here on @physicsfun #reflection #geometry #cube #luycho #optics #light #snellslaw #kineticart #physics #physicstoy #science #math #mathtoy #toucan #anamorphos #art #physics #physicstoy #mirror #cylinder #science #scienceisawesome #kineticart #anamorphosis #mirrorAnamorphosis #mathstoys ...

play_circle_filled Colordrippers: liquid kinetic art using  immiscible fluids of varying density and viscosity which trade places under gravity producing mesmerizing patterns. The less dense liquids in each container rise in accordance with Archimedes principle through a hole in between the clear walls of acrylic. Every Colordripper contains a unique combination, in each side of the double container, of colored oils and other nontoxic household chemicals- some mixes have thicker liquids which move slower and others with fast moving thin oils. ➡️ Follow the link in my profile for info on where to get this and other amazing items featured here on @physicsfun  #fluiddynamics #immiscible #liquiddrop #oildrop #hourglass #physics #physicstoy #physicsfun #surfacetension #viscosity #archimedesprinciple #bouyancy #scienceisawesome.

Colordrippers: liquid kinetic art using immiscible fluids of varying density and viscosity which trade places under gravity producing mesmerizing patterns. The less dense liquids in each container rise in accordance with Archimedes principle through a hole in between the clear walls of acrylic. Every Colordripper contains a unique combination, in each side of the double container, of colored oils and other nontoxic household chemicals- some mixes have thicker liquids which move slower and others with fast moving thin oils. ➡️ Follow the link in my profile for info on where to get this and other amazing items featured here on @physicsfun #fluiddynamics #immiscible #liquiddrop #oildrop #hourglass #physics #physicstoy #physicsfun #surfacetension #viscosity #archimedesprinciple #bouyancy #scienceisawesome ...

play_circle_filled Catenary Curve: the Gateway Arch  matches the shape of a chain hanging from two ends, a curve known as the catenary or hyperbolic cosine- demonstrated here with a scale model souvenir (1”=100’). When an arch is built in the shape of this special mathematical curve the compression forces between each segment are always parallel to the curve- the arch is stable with no tendency to buckle. Famously used in architecture, from the buttresses of Notre Dame to the Gateway Arch. ➡️ Follow the link in my profile for more info on where to find this and  many more of the amazing items featured here on @physicsfun #exploratorium #catenary #hyperboliccosine #gatewayarch #alysiod #architecture #catenaryarch #uniformload #physics #physicstoy #science #scienceisawesome.

Catenary Curve: the Gateway Arch matches the shape of a chain hanging from two ends, a curve known as the catenary or hyperbolic cosine- demonstrated here with a scale model souvenir (1”=100’). When an arch is built in the shape of this special mathematical curve the compression forces between each segment are always parallel to the curve- the arch is stable with no tendency to buckle. Famously used in architecture, from the buttresses of Notre Dame to the Gateway Arch. ➡️ Follow the link in my profile for more info on where to find this and many more of the amazing items featured here on @physicsfun #exploratorium #catenary #hyperboliccosine #gatewayarch #alysiod #architecture #catenaryarch #uniformload #physics #physicstoy #science #scienceisawesome ...

play_circle_filled Catenary Arch @exploratorium : when an arch is built in the shape of this special mathematical curve (even with slippery blocks) the compression forces between each block are always parallel to the curve- the stack is stable with no tendency to buckle. The catenary is the exact shape of a chain hanging by its ends, also known as the hyperbolic cosine. Famously used in architecture, from the buttresses of Notre Dame to the Gateway Arch. 🌟With special thanks to the Exploratorium! ➡️ Follow the link in my profile for more info about the exploratorium and where to find many of the amazing items featured here on @physicsfun #exploratorium #catenary #hyperboliccosine #gatewayarch #alysiod #architecture #catenaryarch #uniformload #physics #physicstoy #physicsfun #science #scienceisawesome.

Catenary Arch @exploratorium : when an arch is built in the shape of this special mathematical curve (even with slippery blocks) the compression forces between each block are always parallel to the curve- the stack is stable with no tendency to buckle. The catenary is the exact shape of a chain hanging by its ends, also known as the hyperbolic cosine. Famously used in architecture, from the buttresses of Notre Dame to the Gateway Arch. 🌟With special thanks to the Exploratorium! ➡️ Follow the link in my profile for more info about the exploratorium and where to find many of the amazing items featured here on @physicsfun #exploratorium #catenary #hyperboliccosine #gatewayarch #alysiod #architecture #catenaryarch #uniformload #physics #physicstoy #physicsfun #science #scienceisawesome ...

play_circle_filled Tornado Spheres: two ball bearings welded together can be made to spin up to 2000+ rpm by the Magnus Effect using a stream of air. Shining three colored LEDs on the spinning pair produces an illusion of floating rings along with a second illusion that these rings are rotating and changing direction due to aliasing with the frame rate of the video camera (like the famous wagon-wheel effect). ➡️ Follow the link in my profile for info on where to buy this and many other amazing items featured here on @physicsfun #spin #rpm #tornadospheres #hurricaneballs #angularmomentum #physics #physicstoy #physicsfun #magnus #magnuseffect #torque #rotation #rotationalinertia #amazing #concavemirror #science #aliasing #wageffect #scienceisawesome.

Tornado Spheres: two ball bearings welded together can be made to spin up to 2000+ rpm by the Magnus Effect using a stream of air. Shining three colored LEDs on the spinning pair produces an illusion of floating rings along with a second illusion that these rings are rotating and changing direction due to aliasing with the frame rate of the video camera (like the famous wagon-wheel effect). ➡️ Follow the link in my profile for info on where to buy this and many other amazing items featured here on @physicsfun #spin #rpm #tornadospheres #hurricaneballs #angularmomentum #physics #physicstoy #physicsfun #magnus #magnuseffect #torque #rotation #rotationalinertia #amazing #concavemirror #science #aliasing #wagonwheeleffect #scienceisawesome ...

play_circle_filled Circularly Polarized Reflecting Scarab: the iridescent jewel scarabs like this one (Chrysina Gloriosa) have a very rare property: they reflect only circularly polarized light! When viewed through a filter that allows only left CP light the metallic greens and gold colors of the beetle are clearly visible, but if viewed through a right CP filter hardly any light gets through and the beetle looks dark brown. Circularly polarized light is similar to linearly polarized light except the direction of the electric field rotates around the direction of motion such that there is a left handed version (clockwise) and a right handed version. When left handed CP light reflects off a mirror it becomes right handed and vice versa- as seen here with this beetle's reflection. My CP light filters came from a pair of RealD 3D movie glasses. Nobel Laureate Albert Michelson was the first to discover that jewel scarabs preferentially reflect left CP light back in 1911. Thanks to Ken Brecher for bringing this incredible natural phenomena to my attention. ➡️ Follow the link in my profile for more info about the physics of CP light and where to get many of the amazing items (including metallic beetles) featured here on @physicsfun  #polarizer #polarizedlight #circularpolarizer #circularpolarization #scarab #scarabbeetle #iridescent #iridescence #science #jewelscarab #scienceisawesome.

Circularly Polarized Reflecting Scarab: the iridescent jewel scarabs like this one (Chrysina Gloriosa) have a very rare property: they reflect only circularly polarized light! When viewed through a filter that allows only left CP light the metallic greens and gold colors of the beetle are clearly visible, but if viewed through a right CP filter hardly any light gets through and the beetle looks dark brown. Circularly polarized light is similar to linearly polarized light except the direction of the electric field rotates around the direction of motion such that there is a left handed version (clockwise) and a right handed version. When left handed CP light reflects off a mirror it becomes right handed and vice versa- as seen here with this beetle's reflection. My CP light filters came from a pair of RealD 3D movie glasses. Nobel Laureate Albert Michelson was the first to discover that jewel scarabs preferentially reflect left CP light back in 1911. Thanks to Ken Brecher for bringing this incredible natural phenomena to my attention. ➡️ Follow the link in my profile for more info about the physics of CP light and where to get many of the amazing items (including metallic beetles) featured here on @physicsfun #polarizer #polarizedlight #circularpolarizer #circularpolarization #scarab #scarabbeetle #iridescent #iridescence #science #jewelscarab #scienceisawesome ...

play_circle_filled Kalliroscope with Convection Stand: visualizing convection currents. Invented and produced by Paul Matisse in the 1970s, suspended microscopic flat crystals of guanine reflect light and allow visualization of the fluid's motion. This rheoscopic fluid is special in that the guanine crystals are the same density as the tetrachloroethylene liquid so the crystals never settle to the bottom allowing the fluid to show the slightest movement. The stand is only about 5 degrees C warmer than room temperature- enough to create the convection currents seen here- due a heating element (a simple resistor) in the base. ➡️ Follow the link in my profile for more info on where to get this and other amazing items featured here on @physicsfun #rheoscopicfluid #rheoscopic #Matisse #PaulMatisse #convection #kineticart #fluiddynamics #1970 #1970s #Calder #kineticsclupture #kalliroscope #physics #physicstoy #art #psychedelic #lavalamp #science #scienceisawesome.

Kalliroscope with Convection Stand: visualizing convection currents. Invented and produced by Paul Matisse in the 1970s, suspended microscopic flat crystals of guanine reflect light and allow visualization of the fluid's motion. This rheoscopic fluid is special in that the guanine crystals are the same density as the tetrachloroethylene liquid so the crystals never settle to the bottom allowing the fluid to show the slightest movement. The stand is only about 5 degrees C warmer than room temperature- enough to create the convection currents seen here- due a heating element (a simple resistor) in the base. ➡️ Follow the link in my profile for more info on where to get this and other amazing items featured here on @physicsfun #rheoscopicfluid #rheoscopic #Matisse #PaulMatisse #convection #kineticart #fluiddynamics #1970 #1970s #Calder #kineticsclupture #kalliroscope #physics #physicstoy #art #psychedelic #lavalamp #science #scienceisawesome ...

play_circle_filled Corona Discharge Trajectories: the ejected electron stream propels the end of a thin wire connected to a miniature Tesla coil. The corona discharge creates a glowing plasma at the end of the wire, but also imparts momenta that pushes the wire’s end into a final state circular orbit. The more interesting behavior occurs during the initial transient orbits which seem to be hypotrochoid type curves beautifully captured here using the Slow Shutter app. Please see seven posts back for details about this mini Tesla coil. ➡️ Follow the link in my profile for info on where to get this Tesla coil with wire end attachment and many other amazing items featured here on @physicsfun #physics #physicsfun #physicstoy #tesla #teslacoil #resonance #transient #transientmotion #resonantfrequency #resonanttransformer #highvoltage #coronadischarge #highfrequency #oscillations #inductance #coppercoil #science #rccircuit #scienceisawesome.

Corona Discharge Trajectories: the ejected electron stream propels the end of a thin wire connected to a miniature Tesla coil. The corona discharge creates a glowing plasma at the end of the wire, but also imparts momenta that pushes the wire’s end into a final state circular orbit. The more interesting behavior occurs during the initial transient orbits which seem to be hypotrochoid type curves beautifully captured here using the Slow Shutter app. Please see seven posts back for details about this mini Tesla coil. ➡️ Follow the link in my profile for info on where to get this Tesla coil with wire end attachment and many other amazing items featured here on @physicsfun #physics #physicsfun #physicstoy #tesla #teslacoil #resonance #transient #transientmotion #resonantfrequency #resonanttransformer #highvoltage #coronadischarge #highfrequency #oscillations #inductance #coppercoil #science #rccircuit #scienceisawesome ...

play_circle_filled Tautochrone Curve: today’s pi day post is a cycloid curve which has the special property that the time it takes for an object to slide to the bottom of it under gravity is the same no matter how high it starts up the curve. Also, the time it takes is always equal to pi times the square root of the cycloid radius divided by g. Presented here are three instances of two spheres being released at the same time, and each time they reach the bottom and collide at the center - even if one sphere is released much lower than the other!  This demonstration is the creation of David Haley of Pomona College. ➡️ Follow the link in my profile for info on where to get or how to make many of the amazing items featured here on @physicsfun #cycloid #circle #tautochrone #brachistochrone #math #mathtoy #mathstoy #physicstoy #kinetic #gravity #kineticart #science #scienceisawesome.

Tautochrone Curve: today’s pi day post is a cycloid curve which has the special property that the time it takes for an object to slide to the bottom of it under gravity is the same no matter how high it starts up the curve. Also, the time it takes is always equal to pi times the square root of the cycloid radius divided by g. Presented here are three instances of two spheres being released at the same time, and each time they reach the bottom and collide at the center - even if one sphere is released much lower than the other! This demonstration is the creation of David Haley of Pomona College. ➡️ Follow the link in my profile for info on where to get or how to make many of the amazing items featured here on @physicsfun #cycloid #circle #tautochrone #brachistochrone #math #mathtoy #mathstoy #physicstoy #kinetic #gravity #kineticart #science #scienceisawesome ...

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