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Free-body diagram

"A free body diagram, sometimes called a force diagram, is a pictorial device, often a rough working sketch, used by engineers and physicists to analyze the forces and moments acting on a body. The body itself may consist of multiple components, an automobile for example, or just a part of a component, a short section of a beam for example, anything in fact that may be considered to act as a single body, if only for a moment. A whole series of such diagrams may be necessary to analyze forces in a complex problem. The free body in a free body diagram is not free of constraints, it is just that the constraints have been replaced by arrows representing the forces and moments they generate." [Free body diagram. Wikipedia]
The free-body diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Physics solution from the Science and Education area of ConceptDraw Solution Park. Read more
Free-body diagram
Free-body diagram, inclined plane,
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How to Draw Physics Diagrams in ConceptDraw PRO

Nothing is more helpful in the study of physics as a visual representation of the physical processes: physics schemes, diagrams and illustrations. Physics charts can be helpful when you learn Physics, perform experiments, or solve any other tasks regarding Physics. ConceptDraw PRO allows you to draw physical diagrams of mechanical, nuclear, optical and electrical processes using the set of vector physics symbols and physics diagram templates. Read more

physics symbols, physics diagrams Physics

Physics solution extends ConceptDraw PRO software with templates, samples and libraries of vector stencils for drawing the physical illustrations, diagrams and charts. Read more
physics symbols, physics diagrams
"A lens is an optical device which transmits and refracts light, converging or diverging the beam. A simple lens consists of a single optical element. A compound lens is an array of simple lenses (elements) with a common axis; the use of multiple elements allows more optical aberrations to be corrected than is possible with a single element. Lenses are typically made of glass or transparent plastic. Elements which refract electromagnetic radiation outside the visual spectrum are also called lenses: for instance, a microwave lens can be made from paraffin wax.
The variant spelling lense is sometimes seen. While it is listed as an alternative spelling in some dictionaries, most mainstream dictionaries do not list it as acceptable." [Lens (optics). Wikipedia]
The example "Ray tracing diagram for convex lens" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Physics solution from the Science and Education area of ConceptDraw Solution Park. Read more
Ray tracing diagram
Ray tracing diagram, convex lens, ray, body, convex lens,