【謎】左に向けても必ず右を向いてるように見える矢印が凄いと話題に

Right Pointing Arrow: spin this arrow 180 degrees and it still points to the right- only in a mirror will it point left (and only to the left). Another incredible ambiguous object illusion by mathematician Kokichi Sugihara of Meiji University in Japan, the inventor of this illusion and art form. A clever combination of reflection, perspective, and viewing angle produce this striking illusion. ➡️ Follow the link in my profile for info about where to get this illusion arrow 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

physicsfunさん(@physicsfun)がシェアした投稿 - 2018年 4月月30日午前8時43分PDT

Ambiguous Object Illusion: an incredible new design by Kokichi Sugihara of Meiji University in Japan, the inventor of this illusion and art form. A clever combination of reflection, perspective, and viewing angle produce this striking illusion. My vote for best gift from the G4G13 exchange this year. ➡️Follow the link in my profile for info about where to get the amazing items featured here on @physicsfun #illusion #ambiguouscylinderillusion #ambiguouscylinder #geometry #mirrorreflection #physics #ambiguousobject #kokichisugihara #physicstoy #math #mathtoy #mathstoy #optics #opticalillusion #3dprinting #perspective #science #scienceisawesome

physicsfunさん(@physicsfun)がシェアした投稿 - 2018年 4月月18日午前11時13分PDT

Mirror Anamorphosis: this famous print by artist István Orosz has a hidden anamorphic image revealed by placing a mirrored cylinder over the depiction of the moon in the image. The work visualizes a scene from the book “The Mysterious Island” by the science-fiction author Jules Verne- whose portrait emerges in the reflection on the cylinder. The math describing this mapping is quite complex and was given in detail in a physics journal in 2000, but before that Martin Gardner described the math in 1975. Repost for this week’s theme as I head to G4G! ➡️ To learn more and to find out where to get this poster please follow the link in my @physicsfun profile. #math #mathtoy #anamorphos #art #physics #physicstoy #mirror #cylinder #Orosz #IstvanOrosz #science #anamorphic #anamorphicart #scienceisawesome #anamorphosis #JulesVerne #martingardner #G4G #cylindrical #perspective #mirrorAnamorphosis #mathstoy #geometricprojection

physicsfunさん(@physicsfun)がシェアした投稿 - 2018年 4月月9日午前8時26分PDT

Death Star Specular Hologram on Vinyl: the latest Stars Wars box set features this amazing "scratch hologram" of a rotating Death Star with a 3D appearance that seems to float above the album. This hologram was hand etched on the metal master by artist Tristan Duke of Infinity Light Science. The etched grooves reflect a point source of light as sharp glints and the groves are arranged so that each eye sees a slightly different pattern such that, via stereopsis, the shiny points appear to float above or below the surface. Also included is the Tie Fighter specular hologram featured on The Force Awakens sound track album set. ➡️ Follow the link in my profile for info on where to get this vinyl LP and many of the amazing items featured here on @physicsfun #hologram #holographic #physics #physicstoy #specularhologram #abrasionhologram #scratchhogram #Starwars #theforceawakens #TristanDuke #vinyl #albumart #stereoscopic #chatoyance #science #scienceisawesome

physicsfunさん(@physicsfun)がシェアした投稿 - 2018年 5月月4日午後1時05分PDT