Sunshine

angle ball beam blind blue bottle bubble Canada balsam candle carbon centre circle colour colour-rays convex lens cork cornea crystalline lens daresay dark diameter disc distance draw drop earth edge fairies film flame focus front glass globe glycerine green hand heat hold hole Home Experiments inch inside lamp lantern lens lenses light liquid look looking-glass lower magic lantern microscope minutes mirror moon Newton's rings object optic nerve orange oxygen paper pass Pepper's Ghost photograph picture piece pin-hole plate prism quinine rainbow rainbow bands rays reflected refracted retina ring round screen seen shadow shines side slide slit solar spectrum stand stars stereoscope Stomata straight sunbeams sundial sunshine surface tell Tommy Smith tube turn violet watch window wire yellow