What is Resistance: Definition and 1000 Discussions

The French Resistance (French: La Résistance) was a collection of French movements that fought against the Nazi German occupation of France and the collaborationist Vichy régime during the Second World War. Resistance cells were small groups of armed men and women (called the Maquis in rural areas) who, in addition to their guerrilla warfare activities, were also publishers of underground newspapers, providers of first-hand intelligence information, and maintainers of escape networks that helped Allied soldiers and airmen trapped behind enemy lines. The Resistance's men and women came from all economic levels and political leanings of French society, including émigrés, academics, students, aristocrats, conservative Roman Catholics (including priests and nuns), Protestants, Jews, Muslims, liberals, anarchists, and communists.
The French Resistance played a significant role in facilitating the Allies' rapid advance through France following the invasion of Normandy on 6 June 1944. The French Resistance provided military intelligence on the German defences known as the Atlantic Wall and on Wehrmacht deployments and orders of battle for the lesser-known invasion of Provence on 15 August. The Resistance also planned, coordinated, and executed sabotage acts on the Nazi electrical power grid, transport facilities, and telecommunications networks. The Resistance's work was politically and morally important to France both during the German occupation and decades that followed. It provided the country with an inspiring example of the patriotic fulfilment of a national imperative countering an existential threat to French nationhood. The actions of the Resistance stood in marked contrast to the collaborationism of the Vichy régime.After the Allied landings in Normandy and Provence, the paramilitary components of the Resistance were organized more formally, into a hierarchy of operational units known, collectively, as the French Forces of the Interior (FFI). Estimated at 100,000 fighters in June 1944, the FFI grew rapidly and reached approximately 400,000 by October. Although the amalgamation of the FFI was, in some cases, fraught with political difficulties, it was ultimately successful, and it allowed France to rebuild the fourth-largest army in the European theatre (1.2 million men) by VE Day in May 1945.

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  1. Shelby8

    Current and resistance of wire heating up water

    Homework Statement An office worker uses an immersion heater to warm 250 g of water in a light, covered, insulated cup from 20 degrees C to 100 degrees C in 4 minutes. The heater is Nichrome resistance wire connected to 120V power supply. Assume wire is at 100 degree C during 4 minute time...
  2. M

    Finding Resistance in RC Circuit

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  3. B

    How much less wind resistance will a round skyscraper have?

    For a school project, I need to know how much less wind resistance a round skyscraper will have compared to a standard rectangular one. You can assume the skyscraper will simply be a generic elliptical shape, somewhat similar to an egg. Answer doesn't have to be extremely specific, I just need...
  4. A

    Projectile Motion problem involving air resistance

    Homework Statement Ok, so I am attempting to solve a projectile motion problem involving air resistance that requires me to find the total x-distance the projectile traverses before landing again. Given: \\ m=0.7\text{kg} \\ k=0.01 \frac{\text{kg}}{\text{m}} \\ \theta=30 \degree Homework...
  5. H

    Need help understanding potential difference practically

    I have a problem understanding the concept of potential difference. I get the picture of seeing it as a height difference for example (rock or water that would fall down) but what confuses me is that many times the order of elements in a circuit does not matter. To explain myself better: if I...
  6. doktorwho

    How to find the equivalent Thevenin's resistance?

    Homework Statement Find the Thevenin's equivalent with respect to points A and B Homework Equations 3. The Attempt at a Solution [/B] The resistance i found to be ##R_t=(R_2+R_1)||R_3+R_4## and that is the correct expression but for the voltage source the book gives...
  7. D

    Engineering What Voltage Should Be Applied to Achieve a Change in Capacitor Energy of 4uJ?

    Homework Statement This is the second problem from our test preparation cycle and i partially solved and understood it. The circuit in the picture is in the state of switch being open (STATE 1: SWITCH OPEN). Calculate ##E1## so that the change in the electrical energy of the capacitor is...
  8. D

    Engineering Understanding thevenin's circuit in linear circuits

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  9. M

    Finding the effect of air resistance on period of oscilation

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  10. A

    What is the velocity of a falling object with air resistance?

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  11. H

    Why would a parallel circuit (or in blood) decrease resistance

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  12. A

    Thevenin resistance in an opamp RC circuit

    Homework Statement In the figure given what is the Thevenin resistance between the nodes of the capacitor?? Homework Equations The Thevenin resistance is the open node resistance between two points. The Attempt at a Solution The way I see it, R2, Rf and R1 are in series and that combination...
  13. A

    What is the Thevenin and Norton equivalent for the given circuit in Fig. 4.125?

    Homework Statement Determine the Thevenin and Norton equivalents at terminals a-b of the circuit in Fig. 4.125. The figure is uploaded. Homework Equations We know that the Thevenin resistance is the resistance between the terminals when the independent sources are turned off. The Attempt at a...
  14. D

    Engineering Find the current in the circuit

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  15. H

    A How is the von Klitzing constant used to measure resistance?

    How is the constant used to measure resistance? I can't find a clear answer anywhere. The constant is h/e^2 but that doesn't really help in seeing how it is linked to resistance other than the units being the same in base units.
  16. hackhard

    Resistance from fingertip to Earth wire

    i connected one probe of digital mutimeter to the Earth terminal of domestic ac supply and held the other probe. it showed resistance of 1.8Mohm . but when i touched that end (one i'd held) to the floor. it displays 1( beyond 200Mohm ). why so ? shouldn't resistance be lesser?doesnt any current...
  17. R

    Calculating Resistance in a Circuit with Unknown Components

    Homework Statement I understand part a, but not part B. Homework EquationsThe Attempt at a Solution For part b) the PD across the resistor is 2V, but we don't know the current so we can't calculate using ohm's law eqn. And because the new resistor's resistance is unkown, how do we actually...
  18. J

    Calculating the missing resistance when only given voltage

    Homework Statement I am asked to calculate the missing resistance(R5) when only given the voltage drop of of 14v across it Homework Equations current and divider rule ohms law The Attempt at a Solution [/B] i tried finding the current of the 6+10 ohm series resistor that is parallel to R5...
  19. Dinie

    Resistance of rice cooker's heating element?

    hi everyone, i need some help with my project that is DC rice cooker. i have the same problem for my calculation and logic cause my rice cooker use 12V and 100Watt. is that mean i need to use 8.3333Amp for the current? or i need to design a circuit that can reduce the amount of current needed...
  20. P

    Solar Cell Current increases as Resistance increases Problem

    Hi everyone, so I'm trying to achieve IV curves based on how this website had done below: http://www.voltaicsystems.com/blog/solar-charger-tutorial-part-2/ But whenever I increase the resistance, the amperage increases rather than decreases! For example, when I use a 500 ohm resistor the...
  21. ernd59

    Insulation Resistance and tangent delta in a X Capacitor

    Hallo, I have a question which elements are responsible for the increase of tangent delta in a X Capacitor and the reduction of its insulation resistance?
  22. hackhard

    Graphite Touch Button: High Conductivity & Faster Response

    graphite has high conductivity , so i though of making a touch button out of a pencil drawn pattern on the wall.the pattern is shown below. when not touched -resistance between ends of the pattern >200Mohm (exceeds dmm limit) when fully pressed - resistance between ends of the pattern = 1.3...
  23. O

    Electrical Resistance Heating

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  24. F

    Resistance and Inertia: How Foundation Size Affects Seismic Movement

    If an object is heavier.. it has more resistance to inertia.. during seismic movement.. when the ground shakes or accelerates.. does it mean bigger foundation would be more resistant and move less.. and smaller foundation can move more?
  25. G

    Resistance: Dissipated power in collision model

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  26. L

    Pendulum in vacuum vs with air resistance

    If a pendulum consisting of a string and a bob is allowed to swing in a vacuum vs in air, which has larger period?
  27. I

    What is the resistance between two resistors?

    Homework Statement Homework Equations R=V/I The Attempt at a Solution Would it be 10ohms? Since PQ is between two 10ohms resistor.
  28. W

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  29. A

    How to make total resistance of 1 ohm?

    Homework Statement We have 1Ω, 2Ω, 2Ω, 4Ω, 5Ω and 6Ω resistors. We have to make a circuit with all of them and total resistance must be 1 ohm. Homework Equations Parallel: 1/R1+1/R2=1/R In series: R1+R2=R The Attempt at a Solution I have only made a circuit from 4 resistors: 1 ohm and 2 ohms...
  30. Dilemma

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    Hello, Circuit: 1. Homework Statement Determine the net resistance between points a and c and a and b. Assume R' ≠ R. Homework Equations ε - IR = 0 V = IR The Attempt at a Solution http://i.imgur.com/Y2KPI20.jpg I applied an emf between the points a and c, and tried to solve using...
  31. G

    Does net charge affect resistance?

    Hi. Is the resistance of a charged cable different compared to a cable with zero net charge? If it is charged negatively, one could argue that now there are more carriers for the current, so the resistance should be smaller (similarly to water that becomes more conductive if ions are added). On...
  32. Kara386

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    I'm not entirely clear what shunt resistance is, it's fairly hard to find things on google which refer to it in the context of LEDs. So we did an experiment in which we measured the IV characteristics of InAs at different temperatures, and observed the gradients of these graphs (apparently those...
  33. A

    B Resistance of Space-Time fabric

    According to relativity gravity is just an illusion caused by wrapping of space-time fabric by mass, right? So, what is the elasticity of of space-time? There must be some king of resistance for the wrapping, otherwise even a tiny mass would plunge in the space time for eternity.
  34. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    Homework Statement We were given five samples of nichrome wire, each with a different diameter but the same length. A micrometer was used to measure the diameters. We then measured and recorded the electrical resistance, R in Ohms of each nichrome sample with a DMM. I will try to summarize all...
  35. M

    Total resistance in a circuit question

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  36. P

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    Using the regression eqn. Find the base resistance of the thermistor. Find the temp. Of the boiling water using this eqn. Y=1.54e^-0.059x How do I go about solving this problem
  37. D

    Beginner Question About Series Parallel

    How exactly do you tell if two elements are in series or parallel? I know that if two elements share two of the same extraordinary nodes then they are in parallel: But in this example I do not see that. I know for certain that the answer for Rt is: [ ( (R1 || R2) + R3) || R4 ] + R5
  38. G

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  39. O

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  40. R

    Resistance calculation on right angle current flow

    As you know, resistance of a rectangular shape is given by R=ρ A/L But how do we theoretically calculate the resistance of the bottom case? ( now, the current flow is not parrallel, current flows from bottom through the right side) I would like to know if there is any references for this...
  41. T

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  42. D

    Voltage vs Resistance. (Temperature analogy for metals)

    Hello everyone, From what i know electrical resistance for metals is a constant, but in fact it varies with temperature but not voltage. Explanation for metals and temperature is something like "heat, which is in fact average speed of electrons, does obstruct tranmission of other electrons...
  43. M

    The Effects of Resistance on Voltage

    In an open circuit, a voltmeter in parallel to a battery measures the EMF. Once the circuit is closed, the measured voltage drops due to both the internal and the external resistance. My question is how can the initial resistor not affect the voltage the voltmeter measures? Additionally...
  44. NihalRi

    Finding wire with the right resistance

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  45. sammyqw

    Calculating Total Resistance in a Parallel Circuit

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  46. E

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  47. diegovmtj

    Help with two electrical circuits please

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  48. moenste

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  49. N

    Batteries, Resistance, Power, Potential, and Current

    Homework Statement You have a 9V battery with an internal resistance of 1.5 ohms. If a 3 ohms load is connected to the battery, how much current will flow through it? When the 3 ohms load is connected, what potential difference will an ideal voltmeter read across the battery's terminals...
  50. S

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