PPT-Light and Optics Part One: Color and Energy

Light straight path absorbs energy as its electrons move from a low to a high energy level An atom emits light when an electron moves from a high to a low energy level     Learning Goals. CMSC 435/634. Light. Electromagnetic wave. E & M perpendicular to each other & direction. Photon wavelength . l. , frequency f = c/. l. Visbile. . l. ≈ 380 nm (blue) to 720 nm (red). Photon energy q = h f = h c/. A look into how we see and what we see.. What is Light?. Light is a type of . wave. .. A . wave. is a disturbance that transfers energy from one point to another without transferring matter. . Eg. . Water waves.. of light than it absorbs, that is called. Fluorescence. Quantum dots in solution fluoresce under UV light at different colors than they absorb. They can be combined with other materials to absorb light.. (I’ll do my best to help!). This Week: . . C. o. l. o. r . & Images. Next Week: . . Depth. (Kevin Ponto) . Image Compositing (Perry . Kivolowitz. ) . This Week. Optics & Physics of Color. for. 1. st. year Physics . Honours. Course. By . Arnab. . Gangopadhyay. . Light. The . light. , . with which we see, is a small part of the vast spectrum of electro magnetic field.. Interaction of light with matter divided into three regimes.. dealing with light and vision.. Optical means . ‘. relating to the eye. ’. Light . Light is radiant energy that . travels (radiates) outward in all directions . from the object giving off the light.. How does our body construct our conscious visual experience? . How de we transform particles of light energy to another? . We do this by receiving light energy and transforming it into neural messages that our brains process into what we consciously see.. What is it and how does it work. a. type of electromagnetic radiation of a specific wavelength. Some of these wavelengths we can see (visible light) . Some wavelengths we cannot see (x-rays, infrared, ultraviolet). dealing with light and vision.. Optical means . ‘. relating to the eye. ’. Light . Light is radiant energy that . travels (radiates) outward in all directions . from the object giving off the light.. Low profile, High performance. Key Features. Up-to 108 lm/w. Ultra wide row spacing. Module lengths of 4’, 8’ and new 6’ . Suspended and wall Mount. Optional integrated . d. aylight sensors. Optional . they are: Geometrical optics - this area of optics operates on the primary assumption that light travels in a straight line. Although this is an abstraction of reality, it nevertheless permits rathe Light rays are (reflected) when they pass from one medium into a medium of a different density, except when they strike perpendicular to the interface. Convex Lens (. (عدسات محدبة . focuses light rays (which is called convergence of light rays).. Optics of Vision . Optics of Vision . Refraction power a lens “Diopter” = 1 m / focal length. Optics of Vision . Optics of Vision . Picture Formation. cataracts . (opacities in the lens). Picture Formation. Introduction to Optics. Overview. The Great Debate. What is light?. Properties of light. The wave-like model. Theories of . colour. Show me the light!. A historical debate: . Optics. Optics: is the study of the .