resistance definition in science

Resistance is often considered as localized in such devices as lamps, heaters, and resistors, in . A penguin's body is slim and straight, so it cuts through the water easily, with minimum resistance. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). 3. a. the tendency of a conductor to oppose the flow of current, causing electrical energy to be changed into heat. The force a flowing fluid exerts on a body in the flow direction. Scientific definitions for resistance resistance [ rĭ-zĭs ′təns ] A force, such as friction, that operates opposite the direction of motion of a body and tends to prevent or slow down the body's motion. Air resistance is a frictional force that air pushes against a moving object. Science; Forces and motion; Friction Impact resistance refers to a material's ability to withstand sudden or intense force or shock. Resistance means "refusal to comply with or accept something." Translate resistance into Spanish. There is a general bounding between hardness and chemical composition, thus most hydrous minerals like halides, carbonates . Fasting insulin concentrations . In other words, it is a measurement of the energy contained within an electric field, or an electric circuit, at a given point.It is equal to the work that would have to be done per unit charge . Drug resistance is a common and serious problem in the treatment of epilepsy, affecting about 1in 3 patients. The way a surface offers resistance to movement by offering friction, conductors oppose the flow of current. The property of high electrical resistance has important applications in electrical and electronic devices. Electrical Resistance, the name itself tells that it is resistance to the flow of electricity. Given the broad nature of resistance, this page focuses on resistance which occurs amongst subcultures and . Rational management of drug resistance requires better understanding of its underlying mechanisms. Resistance is calculated by dividing the voltage between two points by the current flowing through the . It is theorized that the volume of training performed in a RT bout—herein determined by the formula: repetitions /×/ sets ()—plays a significant role in chronic muscular adaptations such as muscle size and strength ().As compared with single-set routines, acute studies indicate that . 2. the opposition offered by one thing, force, etc., to another. Factors affecting Resistance The factors that affect the electrical resistance of a conductor are- Length of Conductor unit of resistance is Ohms. Such factors include the availability of essential resources (e.g. When I was at the mall trying to make my way through the. Symbol: R b. a conductor or coil offering such opposition; resistor. Resistivity, commonly symbolized by the Greek letter rho, ρ, is quantitatively equal to the . What is Resistance? 222 Euglycemic clamp techniques are the gold standard for measurement of insulin resistance. Resistance (also known as ohmic resistance or electrical resistance) is a measure of the opposition to current flow in an electrical circuit. These drag forces act opposite to the . If you've ever seen a dog on a leash suddenly refuse to walk any farther, you know how much resistance one little pet can put up. adj. Definition: The resistance offered by the earth electrode to the flow of current into the ground is known as the earth resistance or resistance to earth. Insulin and Insulin Resistance. Resistance is a property of conductor due to which it resists or opposes the flow of electric current through it. 1 1 (physics) Shortened form of electrical resistance. Resistance to change is the unwillingness to adapt to altered circumstances. Antimicrobial resistance (AMR)—the ability of a microorganism (bacteria, virus, fungi, parasite) to resist the effects of a drug—is a serious, complex and costly public health problem. The earth resistance mainly implies the resistance between the electrode and the point of zero potential. Search resistance to breakage and thousands of other words in English definition and synonym dictionary from Reverso. He is credited for formulating Ohm's Law. R = V / I Where, V is Voltage and I is Current. The New Definition of Wearable Resistance. When the potential difference is applied to a . Resistance is defined as an opposition to current flow. It has important diagnostic properties in mineral identification or abrasion. More than 2.8 million antibiotic-resistant infections occur in the U.S. each year. resistant synonyms, resistant pronunciation, resistant translation, English dictionary definition of resistant. What is Ohm ' s Law? Resistance bands eliminate gravity from the equation. Resistive heating is the process by which an electric current passes through a conductive material (the resistor) and releases heat. Definition: By definition, air resistance describes the forces that are in opposition to the relative motion of an object as it passes through the air. He is a German physicist, who has studied the relationship between voltage, current and resistance and tells us that when one volt of voltage is applied across the component and one ampere of current is passed . Antibiotic resistance is ancient and the "resistome" is a dynamic and mounting problem. Insulin resistance is a hallmark of obesity and is thought to be the cause of or an associated factor in the metabolic syndrome associated with cardiac disease. The Nazis were the party that held power in Germany , the country that started the war. The faster you move, the greater the resistance. noun 1 1 The resistance in a wire increases as: the length of the wire increases the thickness of the wire. Abrasion resistance refers to the ability of materials and structures to withstand abrasion. Two main hypotheses have arisen as explanations for . Ohm definition, the standard unit of electrical resistance in the International System of Units (SI), formally defined to be the electrical resistance between two points of a conductor when a constant potential difference applied between these points produces in this conductor a current of one ampere. Define resistant. Resistance refers to the amount that an object impedes or resists in an electric current. 1 The refusal to accept or comply with something; the attempt to prevent something by action or argument. resistance, in electricity, property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current. These minute particles, en masse, must be pushed against for any object to move. By moving its flippers up and down, the penguin can create extra water resistance on one side or the other. In fluid dynamics, drag is a force acting opposite to the relative motion of any moving object. Battery A battery can act as a source of electricity in circuits. Resistance - Resistance measures how well a material or object conducts electricity. Resistance, or a resistance level, is the price at which the price of an asset meets pressure on its way up by the emergence of a growing number of sellers who wish to sell at that price . . If a unit of electrical charge were placed in a location, the voltage indicates the potential energy of it at that point. Often used in combination: drug-resistant bacteria; wrinkle-resistant pants. Some products have internal resistance qualities such as elastic bands that make it more difficult to move limbs, or have actual load embedded in them. It is associated with increased morbidity and increased risk of premature mortality. Flippers used for steering. Two main hypotheses have arisen as explanations for . Abrasion resistance resists mechanical wear. A measure of the degree to which a substance impedes the flow of electric current induced by a voltage. Flippers used for steering. The bigger the resistance, the smaller the current. Le terme résistance peut être employé dans le domaine de la médecine et de l'électricité.La résistance en médecineEn médecine, la résistance désigne l'adaptation des pathogènes aux . Note. State that resistance = p.d./current and understand qualitatively how changes in p.d. Electric current refers to the flow of electrons. ( noun) A social movement that seeks to prevent or reverse social, cultural, or economic structural change. It is the property of substance by virtue of which it opposes the flow of current through it, is known as electrical resistance. Voltage is a representation of the electric potential energy per unit charge. The resistance was the name for secret, anti- Nazi groups that were formed in Europe during World War II (1939-45). The way a surface offers resistance to movement by offering friction, conductors oppose the flow of current. This allows the penguin to steer through the water. Drug resistance is a common and serious problem in the treatment of epilepsy, affecting about 1in 3 patients. In liquids, friction is the resistance between moving layers of a fluid, which is also known as viscosity. Resistance is measured in ohms (symbol Ω ). Air resistance is the force that air exerts on objects moving through it. The larger resistance, the greater the barrier against the flow of current. resistance [ re-zis´tans] 1. opposition, or counteracting force, as opposition of a conductor to passage of electricity or other energy or substance. Grandeur caractérisant la "force" avec laquelle le conducteur s'oppose au passage du courant. La résistance est un composant électrique dont la principale capacité, précisément, est de montrer une forte résistance au passage du courant électrique. About Antibiotic Resistance. The Science of Rubber Resistance. It is represented by the uppercase letter R. The standard unit of resistance is the ohm, sometimes written out as a word, and sometimes symbolized by the uppercase Greek letter omega: Introduction. The SI unit of electrical resistance is the ohm (O). High resistivity designates poor conductors. Hemodynamics is the study of blood flow. Battery A battery can act as a source of electricity in circuits. Resistance can occur at the micro level of individual people all the way to the macro level of protests that bring down whole governments. Definition of resistance in English: resistance. 1, 2 Antibiotic treatment is one of the main approaches of . Resistance is a property of conductor due to which it resists or opposes the flow of electric current through it. Abrasion-resistant materials are useful for both moving and fixed . noun. Employees can also feel uncomfortable with the changes introduced and resist, sometimes unknowingly . Resistors can also be used to provide a specific voltage for an active device such as a transistor.. All other factors being equal, in a direct-current circuit, the current through a resistor is inversely proportional to its resistance, and directly . 4. Resistance is measured in ohms. Resistance training (RT) is the primary exercise intervention for increasing muscle mass in humans. Unlike other resistive forces, such as dry friction, which are nearly independent of velocity, drag forces depend on velocity.Drag force is proportional to the velocity for a . Numerically, it is equal to the ratio of the potential of the earth electrode to the current dissipated by it. This ability helps to keep the material's original structure and look. All materials we encounter in everyday contexts have an electrical resistance; this . Antibiotic resistance happens when germs like bacteria and fungi develop the ability to defeat the drugs designed to kill them. In general, more viscous fluids are thicker, according to the journal . It is a specific type of drug resistance. A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. It is measured in ohms, which is named after its developer George Simon Ohm. The spectrum of activity reaches from peaceful, legal activities on the one hand, to violent, mass upheavals and civil wars on the other. Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance. environmental resistance The sum total of the environmental limiting factors, both biotic and abiotic, which together act to prevent the biotic potential of an organism from being realized. resistivity, electrical resistance of a conductor of unit cross-sectional area and unit length. Ce type d'appareil est d'une très grande. Creep, known also as cold flow, is the permanent deformation that increases with time under constant load or stress.It results due to long time exposure to large external mechanical stress with in limit of yielding and is more severe in material that are subjected to heat for long time. Air resistance is the friction that objects experience as they move through an atmosphere made up of air. An electrical circuit must have resistance in it in order to change electrical energy to light, heat or movement. Electrical resistance is the property of materials that results in energy being required to maintain an electric current in the material. Capable of, offering, or showing resistance. The resistance in ohms is numerically equal to the magnitude of the potential difference. A characteristic property of each material, resistivity is useful in comparing various materials on the basis of their ability to conduct electric currents. The S.I. The electrical resistance of an object is a measure of its opposition to the flow of electric current.Its reciprocal quantity is electrical conductance, measuring the ease with which an electric current passes.Electrical resistance shares some conceptual parallels with mechanical friction.The SI unit of electrical resistance is the ohm (), while electrical conductance is measured in siemens (S . Electrical Impedance (Z) is the total opposition/resistance that a circuit offers to alternating current. 'she put up no resistance to being led away' . Insulin resistance: definition and consequences Abstract Insulin resistance is defined clinically as the inability of a known quantity of exogenous or endogenous insulin to increase glucose uptake and utilization in an individual as much as it does in a normal population. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). The very important equation voltage = current x resistance V = I x R A high electrical resistance of an electrical conductor is the opposition to the flow of an electric current through that conductor; the inverse measure is known as electrical conductance. Resistance. The meaning of OHMIC RESISTANCE is electrical resistance as distinguished from inductive or capacitive reactance. The science of resistance examines the entire phenomenon of popular opposition to governments and/or occupying powers. Resistance involves collisions of the current-carrying charged particles with fixed particles that make up the structure of the conductors. Air resistance always tries to slows a moving object down. this opposes the flow of electricity in a material. It is a method of wearing down or rubbing away by means of friction. Resistance is a complex social phenomenon that can include a broad range of behaviors and actions. What is a resistor? Resistance is a measure of how much a component decreases the current (see resistor ). The greater the resistance the electricity encounters, the more heat is created. This allows the penguin to steer through the water. That means the germs are not killed and continue to grow. We use this equation to calculate resistance: resistance = potential difference ÷ current For example, 3 A flows through a 240 V. 2. the natural ability of a normal organism to remain unaffected by noxious agents in its environment; see also immunity. Resistance - Resistance measures how well a material or object conducts electricity. Definition: It is the opposition force experienced by the flowing electrons in some substances. What is Drag in Physics - Air and Fluid Resistance. Rearranging the above relation, R = The unit of electrical resistance is ohms. High resistivity designates poor conductors. Resistance is the opposition that a substance offers to the flow of electric current . Impedance is measured in ohms and may include resistance (R), inductive reactance (XL), and capacitive reactance (XC); the total impedance is the algebraic sum of the resistance, inductive reactance, and capacitive reactance. Air is made up of relatively widely spaced particles in the form of molecules and atoms. Resistance is a measure of the opposition to current flow in an electrical circuit. Live Science. resistant: [adjective] giving, capable of, or exhibiting resistance. Definition of Resistance Movement. Scientists often refer to this force as drag or drag force, a term we'll use interchangeably throughout the lesson. Resistance is known that the directed movement of electrons constitutes a current flow. The ohm (symbol: Ω) is the SI derived unit of electrical resistance, named after German physicist Georg Ohm.Various empirically derived standard units for electrical resistance were developed in connection with early telegraphy practice, and the British Association for the Advancement of Science proposed a unit derived from existing units of mass, length and time, and of a convenient scale . or resistance affect current. The electrical resistance is a measure of the difficulty to pass an electric current through a conductor. It focuses on how the heart distributes or pumps blood throughout the body. The act of resisting, opposing, withstanding, etc. It can be covert or overt, organized, or individual. Hardness is a metric that measures how resistant a material is to localised plastic deformation caused by mechanical indentation or abrasion. You can complete the definition of resistance to breakage given by the English Definition dictionary with other English dictionaries: Wikipedia, Lexilogos, Oxford, Cambridge, Chambers Harrap, Wordreference, Collins Lexibase dictionaries, Merriam Webster. A penguin's body is slim and straight, so it cuts through the water easily, with the minimum resistance. Definition: Environmental resistance is a process where combined elements restrain a certain specie to grow uncontrollably.In other words, by employing different variables the nature appears to regulate species' growth to avoid that they reach their full potential or an overpopulation scenario. In general, the word 'resistance' is used to describe an impeding force that acts against an object as it tries to get something done. Learn . noun 2 2 Advertisement The capacity of an organism, tissue, or cell to withstand the effects of a harmful physical or environmental agent, such as a microorganism or pollutant. Causes of the global resistome are overpopulation, enhanced global migration, increased use of antibiotics in clinics and animal production, selection pressure, poor sanitation, wildlife spread, and poor sewerage disposal system. ohm = Electric charge flows easily through some materials than others. Shlomo Melmed MB ChB, MACP, in Williams Textbook of Endocrinology, 2020. According to the Ohm's Law, Resistance can be defined as the ratio between the voltage applied to the current flowing through a circuit. re•sist•ance (rɪˈzɪs təns) n. 1. the act or power of resisting, opposing, or withstanding. The resistance is the ratio of potential difference to current. Resistance There is a resistance to the flow of an electric current through most conductors. Low resistance means the object conducts electricity well, high resistance means the object does not conduct electricity well. This article discusses resistance along with the resistance formula and its derivation. It is an important consideration in the design and selection of various types of personal protective equipment (PPE), such as: In addtion to a level of protection, impact resistance also gives an indication of the durabiltiy of materials. Antibiotic resistance is the ability of a microorganism to withstand the effects of an antibiotic. See how to calculate the resistance of a component. It is associated with increased morbidity and increased risk of premature mortality. Definition: Resistance (Represented by R) offers hindrance to the flow of current in an electrical circuit. Just to make sure we are on the same page, in this article "wearable resistance" is an external gravitational load worn by an athlete. See synonyms for resistance. An easier way to explain resistance is to consider an example of a person in a crowded market struggling to go from one shop to another. Science; Forces and motion; Friction The concepts of electrical resistance and electrical current are closely intertwined and need to be taught at the same time. R is the constant of proportionality called resistance (in ohms) The electrical resistance of a circuit is the ratio between the voltage applied to the current flowing through it. A resistor is an electrical component that limits or regulates the flow of electrical current in an electronic circuit. Elle s'exprime en ohms (symbole : W oméga ) La résistance R d'un conducteur ohmique est le quotient . Resistance. When a current of one ampere flows through a material that has a potential difference of one volt across it, then the resistance of that material is said to be one Ohm. If you're lifting a heavy weight, the most effective part of a rep is coming down in a controlled manner… This is the part that puts the most strain on the muscle as it's less natural than picking something up. The study of hemodynamics integrates a number of sciences, including biology, chemistry, and physics. For example; The faster the vehicle -moves, the bigger the air resistance becomes. It is also known as drag. Employees may realize they don't like or want a change and resist publicly, and that can be very disruptive. This can be measured as a value of "electrical resistance", and its inverse property is measured as "electrical conductance." food and water), predation, disease, the accumulation of toxic metabolic wastes, and, in some species, behavioural changes due to stress . As the heart pumps blood through the blood vessels, it helps to supply oxygen to the organs and tissues of the body. By moving its flippers up and down, the penguin can create extra water resistance on one side or the other. resistivity, electrical resistance of a conductor of unit cross-sectional area and unit length. Antibiotic resistance evolves naturally via natural . 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