Related by context. Frequent words. (Click for all words.) 58 pinhole camera 52 pinhole cameras 49 Muybridge 49 vitrine 49 optical illusions 48 daguerreotype 48 magic lantern 48 pinhole 48 woodcut 47 parallax 47 refracting 47 Fresnel 47 sketchpad 47 holography 47 photographic 47 trompe l' oeil 47 Polaroid camera 46 scanning electron microscope 46 quantum entanglement 46 pointillism 46 scanning tunneling microscope 46 darkroom 46 cyclorama 46 maquette 46 Piranesi 45 adaptive optics 45 sundials 44 geometric forms 44 glassblowing 44 Georges Seurat 44 palimpsest 44 kinetic sculpture 44 Fourier 44 lightbox 44 photonic crystal 44 sundial 44 keyhole 44 astronomical observations 44 viewfinder 43 geometrical 43 laparoscope 43 panoramic 43 rectilinear 43 Giotto 43 optical microscopy 43 Galileo Galilei 43 illuminated manuscripts 43 Dan Flavin 43 marquetry 43 maquettes 43 Braque 43 Corot 43 interferometry 43 cloaking device 43 cylindrical 43 daguerreotypes 43 chiaroscuro 43 compositional 43 lapse photography 43 easel 43 Egyptian pyramids 43 abstract sculptures 43 anaglyph 43 cruciform 43 fisheye 43 cubist 42 armature 42 architectonic 42 spherical 42 laser scanner 42 Buckminster Fuller 42 kaleidoscopes 42 telescope 42 magnifier 42 eyepieces 42 Exploratorium 42 Marcel Duchamp 42 tripod 42 Hokusai 42 overhead projectors 42 scrims 42 stained glass 42 etchings 42 Hockney 42 James Turrell 42 Daguerre 42 optical illusion 42 mandalas 42 shadow puppetry 42 magnifying lens 42 quantum mechanics 42 Leonardo da Vinci 42 camera 42 Byzantine era 42 protractor 41 Polaroids 41 gravitational lensing 41 sculptural 41 holographic 41 magnifications 41 magnification