Merge pull request #45 from pierre-auguste/dev

adding _Rsources

_Resources/BIPM Units/Ampere/Ampere.txt

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+A = V/Ω
+Ampère = Volt / Ohm
+
+Josephson effect (volt)
+-----------------------
+Josephson constant
+KJ = 483 597.848 416 984 GHz V–1 (calculated to 15 significant digits)
+KJ = 2e/h
+
+
+Quantum Hall effect (ohm)
+-------------------------
+von Klitzing constant
+RK = 25 812.807 459 3045 Ω (calculated to 15 significant digits)
+RK = h/e2

_Resources/Dialogs/Experiences/AccousticGasThermometry/AccousticGasThermometry_en.txt

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+The kelvin, symbol K, is the SI unit of thermodynamic temperature. It is defined by taking the fixed numerical value of the Boltzmann constant, k, to be 1.380 649 × 10^−23 when expressed in J K^−1, which is equal to kg m^2 s^−2 K^−1, where the kilogram, meter, and second are defined in terms of h, c, and ∆νCs.

_Resources/Dialogs/Experiences/AccousticGasThermometry/AccousticGasThermometry_fr.txt

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+Le kelvin, symbole K, est l’unité de température thermodynamique du SI. Il est défini en prenant la valeur numérique fixée de la constante de Boltzmann, k, égale à 1,380 649 × 10−23 lorsqu’elle est exprimée en J K−1, unité égale à kg m2 s−2 K−1, le kilogramme, le mètre et la seconde étant définis en fonction de h, c et ∆νCs.

_Resources/Dialogs/Experiences/AtomicClock/AtomicClock_en.txt

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+May I present to you our cesium atomic clock? We will endeavor to determine the correct frequency to excite the caesium 133 atoms.
+
+Step 1 : By turning on the blue button on the left, you will fill the oven (a vacuum) with some Cesium-133 gas.
+
+---
+
+Step 2 : The first red button will cool the atoms to near absolute zero temperature by slowing them down with four lasers.
+
+Look in the oven.
+
+---
+
+Step 3 : The second red button activates another laser to add velocity to these atoms and confine the Cesium into a coherent beam.
+
+Each atom has one of two possible energy states, which are referred to as hyperfine levels. For the sake of simplicity, let's call them state A and state B.
+
+---
+
+Step 4 : First green button powers on a magnetic field which removes all atoms in state B from the beam, so only atoms in state A remain.
+
+The state-A atoms are sent through a resonator where they will be subjected to microwave radiation, which triggers some of the atoms to change to state B.
+
+---
+
+Step 5 : Second green button, right to the resonator, will ensure atoms that are still in state A are removed by a second magnetic field.
+
+---
+
+Step 6 : The red button will activate the microwaves in the resonator. A detector then counts all atoms that have changed to state B.
+
+The percentage of atoms that change their state while passing through the resonator depends on the frequency of the microwave radiation. The more it is in sync with the inherent oscillation frequency of the atoms, the more atoms change their state. The goal is to precisely tune the microwave frequency to match the oscillation frequency of the atoms, and then measure it. After exactly 9,192,631,770 oscillations, one second has passed.

_Resources/Dialogs/Experiences/Avogadro/Avogadr_en.txt

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+The mole, symbol mol, is the SI unit for amount of substance. One mole contains exactly 6.02214076 × 10^23 elementary entities. This number, known as Avogadro's number, corresponds to the fixed numerical value of the Avogadro constant, NA, when expressed in mol^-1. The amount of substance, symbol n, of a system is a representation of the specified number of elementary entities. An elementary entity can be an atom, a molecule, an ion, an electron, or any other specified particle or group of particles.
+
+---
+
+The Avogadro project aims to redefine Avogadro's constant (currently defined by the kilogram -- the number of atoms in 12 g of carbon-12) and reverse the relationship so that the kilogram is precisely specified by Avogadro's constant. This method required creating the most perfect sphere on Earth. It is made out of a single crystal of silicon 28 atoms. By carefully measuring the diameter, the volume can be precisely specified. Since the atom spacing of silicon is well known, the number of atoms in a sphere can be accurately calculated. This allows for a very precise determination of Avogadro's constant.

_Resources/Dialogs/Experiences/Avogadro/Mole_fr.txt

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+La mole, symbole mol, est l’unité de quantité de matière du SI. Une mole contient exactement 6,022 140 76 × 1023 entités élémentaires. Ce nombre, appelé « nombre d’Avogadro », correspond à la valeur numérique fixée de la constante d’Avogadro, NA, lorsqu’elle est exprimée en mol−1.
+
+La quantité de matière, symbole n, d’un système est une représentation du nombre d’entités élémentaires spécifiées. Une entité élémentaire peut être un atome, une molécule, un ion, un électron, ou toute autre particule ou groupement spécifié de particules.

_Resources/Dialogs/Experiences/Caesium/CaesiumHyperfineGroundStructure_en.txt

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+The "Orbits" (A, B, C, D, E, and F) are electron energy levels within an atom.
+
+Note: Caesium's atoms have only one electron on level F. 
+
+The hyperfine structure of an energy level in an atom involves the splitting of this level into very closely spaced energy states.
+
+---
+
+It results from the interaction between the nucleus's magnetic moment and that of the electrons. This allows for precise energy transitions, notably used to establish extremely accurate time standards.
+
+In summary, the hyperfine structure of cesium 133 is like the regular beating of a heart, providing a reliable basis for measuring time.
+
+---
+
+To alter the hyperfine structure of atoms, a technique called microwave spectroscopy is employed. Microwaves absorbed by atoms induce transitions between the energy levels of the hyperfine structure. By observing changes in microwave absorption, one can deduce information about the hyperfine structure of atoms.
+
+Step 1: Find the frequency using the blue button or press the red button to activate the automatic mode.

_Resources/Dialogs/Experiences/ElementaryCharge/ElementaryCharge.txt

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+The elementary charge (e) is the fundamental and indivisible unit of electric charge. It is carried by subatomic particles such as protons and electrons.
+
+A proton carries a positive elementary charge (+e), while an electron carries an equal but negative elementary charge (-e).
+
+---
+
+This charge is a basic building block of electric interactions and is a critical concept in the study of electromagnetism and particle physics. Its approximate value is 1.602 x 10^-19 coulombs.

_Resources/Dialogs/Experiences/KibbleBalance/KibbleBalance.txt

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+The Kibble balance is constructed so that the mass to be measured and the wire coil are suspended from one side of a balance scale, with a counterbalance mass on the other side. The system operates by alternating between two modes: "weighing" and "moving". The entire mechanical subsystem operates in a vacuum chamber to eliminate the effects of air buoyancy.
+
+---
+
+
+While "weighing", the system measures the "I" component and the "v" component. The system controls the current in the coil to pull the coil through a magnetic field at a constant velocity "v". Coil position and velocity measurement circuitry use an interferometer together with a precision clock input to determine the velocity and control the current needed to maintain it. The required current is measured using an ammeter comprising a Josephson junction voltage standard and an integrating voltmeter
+
+---
+
+While "moving", the system measures the "U" component. The system ceases to provide current to the coil. This allows the counterbalance to pull the coil (and mass) upward through the magnetic field, which induces a voltage difference across the coil. The velocity measurement circuitry measures the speed of movement of the coil. This voltage is then measured using the same voltage standard and integrating voltmeter.
+
+---
+
+A typical Kibble balance measures U, I, and v, but does not measure the local gravitational acceleration "g", because "g" does not vary rapidly with time. Instead, "g" is measured in the same laboratory using a highly accurate and precise gravimeter. In addition, the balance depends on a highly accurate and precise frequency reference such as an atomic clock to compute voltage and amperage. Thus, the precision and accuracy of the mass measurement depends on the Kibble balance, the gravimeter, and the clock.

_Resources/Dialogs/Experiences/LaserRule/LaserRuler.txt

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+Our laser ruler is a handheld device.
+
+B is a mirror that reflects only photons of a certain frequency. The photon passing through the mirror to reach point C serves as a reference.
+
+---
+
+Since the distance ABCBA is equal to the distance ABDBA, we can exclude this distance from the equation (as well as the time needed by electronics) by starting the stopwatch when the reference photon has completed its round trip.
+
+---
+
+The stopwatch thus measures solely the round-trip time from D to our measuring mirror. It is now sufficient to divide this time by two (to obtain only the one-way time) and apply the time rule in seconds multiplied by 299792458 to obtain the distance traveled.

_Resources/Dialogs/Experiences/LightSpeed/LightSpeed.txt

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+The speed of light, denoted as "c," is a fundamental physical constant that represents the velocity at which electromagnetic waves, including visible light, propagate through a vacuum.
+
+This universal speed limit was elucidated by Albert Einstein's theory of special relativity, which he introduced in 1905.
+
+---
+
+In the International System of Units (SI), the speed of light is 299,792,458 meters per second. One meter is the distance traveled by the light in one second divided by 299,792,458.