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2. Rolling resistance - Wikipedia

   en.wikipedia.org/wiki/Rolling_resistance

   Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface. It is mainly caused by non-elastic effects; that is, not all the energy needed for deformation (or movement) of the wheel, roadbed, etc., is recovered when the pressure is removed.

3. Fillet (picture framing) - Wikipedia

   en.wikipedia.org/wiki/Fillet_(picture_framing)

   A fillet corner sample. Note the flat "lip". In the picture framing industry, a fillet (also referred to as a slip) is a small piece of moulding [1] which fits inside a larger frame or, typically, underneath or in between matting, used for decorative purposes. [2] The picture framing term is probably related to, though not necessarily derived ...

4. Rolling contact fatigue - Wikipedia

   en.wikipedia.org/wiki/Rolling_contact_fatigue

   Rolling Contact Fatigue (RCF) is a phenomenon that occurs in mechanical components relating to rolling/sliding contact, such as railways, gears, and bearings. [2] It is the result of the process of fatigue due to rolling/sliding contact. [2][3] The RCF process begins with cyclic loading of the material, which results in fatigue damage that can ...

5. Timber framing - Wikipedia

   en.wikipedia.org/wiki/Timber_framing

   Timber design or wood design is a subcategory of structural engineering that focuses on the engineering of wood structures. Timber is classified by tree species (e.g., southern pine, douglas fir, etc.) and its strength is graded using numerous coefficients that correspond to the number of knots, the moisture content, the temperature, the grain ...

6. Mat (picture framing) - Wikipedia

   en.wikipedia.org/wiki/Mat_(picture_framing)

   In the picture framing industry, a mat (or matte, or mount in British English) is a thin, flat piece of paper -based material included within a picture frame, which serves as additional decoration and to perform several other, more practical functions, such as separating the art from the glass. Putting mats in a frame is called matting, a term ...

7. Rotating reference frame - Wikipedia

   en.wikipedia.org/wiki/Rotating_reference_frame

   t. e. A rotating frame of referenceis a special case of a non-inertial reference framethat is rotatingrelative to an inertial reference frame. An everyday example of a rotating reference frame is the surface of the Earth. (This article considers only frames rotating about a fixed axis. For more general rotations, see Euler angles.)