The act of rubbing the surface of one body against that of another; attrition; in hygiene, the act of rubbing the body with the hand, with flannel, or with a brush etc., to excite the skin to healthy action.
Features of war that resist all action, make the simple difficult, and the difficult seemingly impossible. Friction may be mental (such as indecision) or physical (such as enemy fire). Friction may be imposed by enemy action or a variety of other physical and human factors. Fear is a key factor in the appearance of friction in military operations.
A frontiersman might rub two sticks together and the result is a fire. The rubbing of a coin can result in a wear on its surface. Typically, friction causes various degrees of noticeable wear and results in lowering the desire (and value) of a coin. Friction can be caused by a coin sliding in a holder, coin drawer, or even by a good intending collector who tries to "clean" the coin.
Resistance created by the surface of one object moving over the surface of another due to the interlocking of minute projections from the surfaces; this is called solid friction. If a lubricant is introduced between the two moving surfaces, fluid friction replaces solid friction.
Friction is the resistance to motion caused by contact between two bodies. If two bodies are in contact, there is not any friction between them unless an attempt is made to move the bodies relative to one another then a friction force develops between them which tends to impede the motion. The impediment to the motion may have two forms: The motion may be completely prevented because the friction force prevents all motion. The bodies may slide relative to one another, but the friction force acts to oppose the motion, even though the friction force is not terse enough to stop the motion.
Friction is a force that resists the motion of an object. Friction results from the close interaction between two surfaces that are sliding across each other. When you slam on your brakes and your car skids to a stop with locked wheels, it is the force of friction that brings it to a stop. Friction resists the car's motion. A g is a unit of acceleration equal to the acceleration caused by gravity. Gravity causes free-falling objects on the Earth to change their speeds at rates of about 10 m/s each second. That would be equivalent to a change in speed of 32 ft/s in each consecutive second. If an object is said to experience 3 g's of acceleration, then the object is changing its speed at a rate of about 30 m/s every second.
A resistance to mechanical motion caused by two surfaces rubbing against each other. The three types of friction are: 1) Static; 2) Dynamic (constant with varying speed); and 3) Viscous (increases with increased speed).
Without going into a physics lecture, friction basically refers to the rubbing together of two objects when one or both are moving. This contact releases energy in the form of heat, and eventually results in surface deterioration.
The force produced as reaction to movement. All fluids produce friction when they are in motion. The higher the fluid viscosity, the higher the friction force for the same flow rate. Friction is produced internally as one layer of fluid moves with respect to another and also at the fluid wall interface.
A disturbance which appears either on the high-points of a coin or in the fields, as a result of that coin rubbing against other objects. A coin is said to have friction when only the lustre is disturbed, and no actual wear of the metal is visible to the naked eye. Many strictly uncirculated coins can have some friction, often from storage in old style coin cabinets or albums or from rubbing against other coins in rolls. (See "Rubbing").
This is the deepest of the Swedish massage strokes. This stroke encompasses deep, circular movements applied to soft tissue causing the underlying layers of tissue to rub against each other. The result triggers an increase in blood flow to the massaged area.
Friction is defined as the resistance to motion between surfaces in contact. Friction can be constant or it can vary with speed. Elements contributing to overall friction may be in the form of drag, sliding friction, system wear or lubricant viscosity.
Friction is the resistance found at the duct and piping walls. Resistance creates a static pressure loss in systems. The primary purpose of a fan or pump is to produce a design volume of fluid at a pressure equal to the frictional resistance of the system and the other dynamic pressure losses of the components.
A force that opposes the motion between two objects in contact with each other. The force of friction between two objects is determined as the product of the normal force between the two objects and the coefficient of friction between them.
(Or frictional force.) The mechanical resistive force offered by one medium or body to the relative motion of another medium or body in contact with the first. Solid bodies in relative motion display sliding and rolling friction that depend upon the forces pressing the bodies together, but that are nearly independent of the shapes or relative speeds of the bodies. The resistance of fluids to the relative motion of a solid body is, however, dependent upon the relative speed and the shape of the body, as well as upon the character of the flow itself ( see drag). Turbulent resistance of the earth on the atmosphere ( surface friction) has been represented as proportional to both the first and second power of the speed of the low-level winds. The first representation leads to the cross-isobar frictional wind and to an estimate of the low- level frictional convergence, while the second representation has been employed in studies of momentum and energy abstraction from the atmosphere at the earth's surface. The word "friction" is often inappropriately used in place of turbulent drag when describing the differences between the atmospheric boundary layer and the rest of the troposphere.
Friction developed in dynamic seal situations during machine start-up. When machine operation is irregular, O-rings tend to conform (adhere) to the microfine grooves of surrounding glandular surfaces, requiring extra initial force to break them out of these microfine grooves.
Friction is a physical force that acts against the relative movement of two contiguous bodies. If a body is to be moved while being in contact with another one, work has to be done against the forces resulting from this contact. If a block is pulled upon by a defined force, then the block moves as soon as the force is higher than the adhesional force. If two solid bodies are moved relative to one another, then dynamic friction can be observed. In engineering, such a frictional force can be lowered by lubrication. Another possibility to decrease friction is the modification of the surfaces through deposition of atoms and molecules onto surfaces. The specific subject of friction is called tribology.
In meteorology, it is the turbulent resistance of the earth on the atmosphere. Considered as the resistance of fluids ( air and water) to the relative motion of a solid body. The amount is dependent on the size and shape of the body.
Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. It is not, however, a fundamental force, as it originates from the electromagnetic forces and exchange force between atoms. In situations where the surfaces in contact are moving relative to each other, the friction between the two objects converts kinetic energy into thermal energy, or heat (atomic vibrations).
After Sally Dick & Jane ended, Phideaux worked on music alone as a one-man recording project. He attended school at New York University for film and television production. After graduating from college, Phideaux decided to return to the collaborative aspect of music and formed an acoustic-themed band called The SunMachine with childhood friend Ariel Farber (violin/vocals) and various other folks.
a way that a form of energy, such as kinetic energy, is changed into another form, usually heat energy. Friction causes you to slow down when you are swinging. It also causes a spinning top to eventually fall over.
Friction models are very similar to promotional models, except that they have a small motor that allows them to be rolled along for short distances under their own power. Friction models are also sometimes called coasters.