
Sundials1970-01-01T00:00:00+00:00SUNDIAL: simulation of shadow cast by a sundial on Midsummer Day.
SUNDIALS have been used since antiquity to tell the time by the position of the shadow cast by a gnomon (the sticking out bit of a sundial). Early examples were simply towers whose shad...PT8Shttps://d3e1m60ptf1oym.cloudfront.net/6126c233-8002-4c7f-b370-306596353aa6/Sundial-4-views-FHD-Russell-Kightley_xlarge.jpghttps://d3e1m60ptf1oym.cloudfront.net/6126c233-8002-4c7f-b370-306596353aa6/Sundial-4-views-FHD-Russell-Kightley_mp4_hd_video.mp4https://www.scientific.pictures/-/galleries/animations/-/medias/6126c233-8002-4c7f-b370-306596353aa6/pricehttps://www.scientific.pictures/-/galleries/animations/-/medias/6126c233-8002-4c7f-b370-306596353aa6/price
Steampunk Eye with Varying Lens
Steampunk styled artificial eye whose lens changes shape. A collimated light beam enters the eye from the brass lamp at the left. The path of the light through the eye is shown as a series of sections (bright green). The animation starts with the eye focused at infinity (the beam is focused on the retina at right). As the lens becomes fatter (its curvature increases), so the light beam is focused closer to the lens. In this animation, the curvatures of the lens and cornea, and the relative sizes of the various ocular components, closely match those of a real eye. This is a simulation in which the computer calculates the paths of the rays. The main simplification is the absence of an aqueous and vitreous humour. I have adjusted the refractive index of the lens to take account of that.
This change in lens shape is how the eye accommodates to focus on near and distant objects. When relaxed, the lens has minimum curvature and focuses on infinity. This means that parallel rays (as in this simulation) are brought to a focus on the light sensitive retina. For close objects, whose rays diverge, the lens must become more powerful (its curvature increases).
This change in lens shape is how the eye accommodates to focus on near and distant objects. When relaxed, the lens has minimum curvature and focuses on infinity. This means that parallel rays (as in this simulation) are brought to a focus on the light sensitive retina. For close objects, whose rays diverge, the lens must become more powerful (its curvature increases).
Animation ID: Steampunk-Eye-Lens-Changing-Shape-FHD-Russell-Kightley
Duration: 00:00:08
copyright Russell Kightley
Animation resolution: 1920x1080 pixels @ 30.0 fps, ~5.8 Mbits/s
Animation keywords: anatomical, anatomy, brass, changing, collimated, cornea, eye, focus, focused, focusing, glasses, image, infinity, inversion, inverted, iris, lens, ocular, ophthalmic, ophthalmologist, ophthalmology, optical, optics, optometrist, optometry, organ, organs, perception, refraction, refractive, retina, shape, sight, steampunk, vision, visual
Steampunk Eye with Varying Lens 2019-04-10T07:16:34ZSteampunk styled artificial eye whose lens changes shape. A collimated light beam enters the eye from the brass lamp at the left. The path of the light through the eye is shown as a series of sections (bright green). The animation starts with the eye f...PT8Shttps://d3e1m60ptf1oym.cloudfront.net/163a05e9-edcf-4a2b-8c27-f96d0e2613f4/Steampunk-Eye-Lens-Changing-Shape-FHD-Russell-Kightley_xlarge.jpghttps://d3e1m60ptf1oym.cloudfront.net/163a05e9-edcf-4a2b-8c27-f96d0e2613f4/Steampunk-Eye-Lens-Changing-Shape-FHD-Russell-Kightley_mp4_hd_video.mp4https://www.scientific.pictures/-/galleries/animations/-/medias/163a05e9-edcf-4a2b-8c27-f96d0e2613f4/pricehttps://www.scientific.pictures/-/galleries/animations/-/medias/163a05e9-edcf-4a2b-8c27-f96d0e2613f4/price

Standing Wave Summation1970-01-01T00:00:00+00:00Animation showing how the standing wave is formed by the addition of a wave (green) and its reflection (red). The resulting (purple) wave is formed by the sum of these two waves. Notice how at fixed points the standing wave has no amplitude. These poin...PT2Shttps://d3e1m60ptf1oym.cloudfront.net/1a7eaa93-c9d9-40e9-b961-6668c7598739/Standing-wave-summation-perspective-FHD-Russell-Kightley_xlarge.jpghttps://d3e1m60ptf1oym.cloudfront.net/1a7eaa93-c9d9-40e9-b961-6668c7598739/Standing-wave-summation-perspective-FHD-Russell-Kightley_mp4_hd_video.mp4https://www.scientific.pictures/-/galleries/animations/-/medias/1a7eaa93-c9d9-40e9-b961-6668c7598739/pricehttps://www.scientific.pictures/-/galleries/animations/-/medias/1a7eaa93-c9d9-40e9-b961-6668c7598739/price