Forensic and Investigative Science FIS 206 Lecture Notes - Lecture 3: Real Image, Movie Projector, Virtual Image
27 Apr 2016
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Document Summary
Universal image for science microscope, many organizations for science us this as the symbol. Type of evidence microscopes are used for: trace: hairs, fibers, fabrics, glass, bullets, duct tape, tool marks, questioned documents, patterns, illicit drugs (homogenous or heterogeneous) Lens object: real image: exist in real space, doesn"t need to visualize through lens, multiple views, opposite side of lens as the object, inverted image object real image. The lens a translucent material that bends light in a known and predictable image: converging lens. All light enters one side and meets at a point (principle focus) on the other side of the lens. Principle focus point found on either side of lens at a specific (measurable) distance. Focal distance (f) determines the quality of the image. Compound light microscopy the concept used in all microscopes (dual lens system: 2 stages of magnification. Lens 1 = 10x lens 2 = 15x. Lens 2 magnifies object produces a real image.
