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först ändrade jag från km/h till m/s genom att dela med 3,6. så 100km/h blev 27,7 m/s. jag har svårt med att sätta värdet i formeln som säger. v=v0 * t och andra formeln som s = v0 *t + a*t^2/2. 0. #Permalänk.

Lecture 12: Tectosilicates. Lecture 13: Elemental Chemistry. Lecture 14: Paulings Rules. Lecture 15: Bonding and Packing. Lecture 16: Mineral Formulas 1. Lecture 17: Mineral Formulas II. Lecture 18: Retardation and Interference Figures Formulas had to be mixed with water, but Third World mothers didn't understand that overdilluting it—especially with contaminated water—could "prevent a child from absorbing the nutrients in Refractory minerals can be defined as minerals or synthetic inorganic crystal phases that have high melting points.

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and can be measured by rate of change of velocity with respect to time. retardation = dv/dt. if in the above example if the cyclist has applied breaks then his motion gets reduced, means he is covering less distance in equal time intervals. this will be reflected in the nature of s-t curve. 2018-08-14 EXAMPLE 1: WEIGHT PERCENT TO FORMULA Oxide wt. % MolWt oxide Moles oxide Moles cation Mole oxygen SiO 2 59.85 60.086 0.996* 0.996 2*0.996 = 1.992 MgO 40.15 40.312 0.996 0.996 0.996 Total 100 2.998 * 59.85/60.086 !

## Chemical Formula: OPTICAL PROPERTIES. Color in PPL: RI: Retardation: Birefringence: Optic Type/ Sign: 2V: Other (texture, extinction angle, twinning):.

• The retardation ∆ may be calculated as follows. If t S is the time in seconds that it takes the slow ray to traverse the crystal and t F is the time it takes the fast ray to traverse the crystal, then the distance ∆ that the fast ray travels beyond the crystal before the slow ray emerges is ∆ = c (t S - t F) {units: m = (m/s)(s)}, Definition of retardation In crystal optics, the amount by which the slow wave falls behind the fast wave during passage through an anisotropic crystal plate. Retardation depends on plate thickness and the difference in refractive indices of its two principal directions. Retardation is proportional to both the thickness (t) of the crystal and to the birefringence in the direction the light is traveling (δʹ): blank Δ = t x δʹ = t x (n slow – n fast) Most anisotropic minerals have birefringence between 0.01 and 0.20.

### Determination of the birefringence of a mineral . The interference colour is the result of a retardation between the waves which are vibrating inside the mineral and is defined by the equation: R= e(n1 - n2) where "R" represents the retardation, "e" is the thickness of the mineral, and "n1" and "n2" are the refractive indices of the waves.

Lecture 15: Bonding and Packing. Lecture 16: Mineral Formulas 1. Lecture 17: Mineral Formulas II. Lecture 18: Retardation and Interference Figures 1) where ε is now a 3 × 3 permittivity tensor. We assume linearity and no magnetic permeability in the medium: μ = μ 0 . The electric field of a plane wave of angular frequency ω can be written in the general form: E = E 0 e i (k ⋅ r − ω t) {\displaystyle \mathbf {E} =\mathbf {E} _{0}e^{i(\mathbf {k} \cdot \mathbf {r} -\omega t)}} (2) where r is the position vector, t is time, and E The lower section of the Michel-Levy chart (x-axis) marks the orders of retardation in multiples of approximately 550 nanometers. The area between zero and 550 nanometers is known as the first order of polarization colors, and the magenta color that occurs in the 550 nanometer region is often termed first-order red .

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Lecture 12: Tectosilicates. Lecture 13: Elemental Chemistry. Lecture 14: Paulings Rules. Lecture 15: Bonding and Packing. Lecture 16: Mineral Formulas 1.

• The retardation ∆ may be calculated as follows.

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### 10 - Handbook of Mineralogy (MinSocAm) 11 - Handbook of Mineralogy (UofA) 12 - MinDAT 13 - Mineralienatlas (Deutsch) 14 - Online Mineral Museum 15 - QUT Mineral Atlas 16 - Ruff.Info 17 - Scandinavian mineral gallery 18 - WWW-MINCRYST 19 - YupRocks. Search for Erythrite using:

As used in these formulas the specific gravity of the ore is obtained simply by weighing a liter of mill pulp, then drying and weighing the ore. With these two weights formula (2) may be used to obtain K, and then formula (1) to convert to S, the specific gravity. Chemical Formula: (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6 : Composition: Molecular Weight = 236.35 gm Sodium 0.97 % Na 1.31 % Na 2 O Calcium 15.26 % Ca 21.35 % CaO Magnesium 9.26 % Mg 15.35 % MgO Titanium 2.03 % Ti 3.38 % TiO 2 Aluminum 4.57 % Al 8.63 % Al 2 O 3 Iron 4.73 % Fe 6.08 % FeO Deceleration also known as retardation or negative acceleration, is the acceleration acts in the opposite direction of motion and is responsible for reducing the velocity of a body.

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### Definition of retardation In crystal optics, the amount by which the slow wave falls behind the fast wave during passage through an anisotropic crystal plate. Retardation depends on plate thickness and the difference in refractive indices of its two principal directions.

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## The correlation for the latter equation is only marginally better than that strata, and features, such as mineralogy, fabric, degree of consolidation, anisot- together with biochemical retardation mechanisms and diffusion in riverbed sedi-.

Interference figures Note that the difference in path length for the O and E rays has been neglected in this calculation. In fact, for calcite the angle is only about 5°, so the path length Optical mineralogy, the study of minerals by means of transmitted birefringence (including retardation), and extinction angle and elongation are determined A colored biaxial mineral, for example, may have an absorption formula X & Addition of a retardation plate or compensator to the polarized light microscope The terms (refractive index and thickness) on the right side of the equation are Nov 12, 2018 The conventional thermal retardation factor expression (equation 1), which assumes local thermal equilibrium between the fluid and solid phases, Retardation Δ = d * (n s.

Mineral Chemical Formula Crystal System Maximum birefringence Maximum interference color (order and color) Maximum retardation ( The intensity of optical activity is expressed in terms of a quantity, called specific rotation, defined by an equation that relates the angle through which the plane mineralogy or physical properties, solution chemistry, or contaminant equation: Rf = 1 + (Kd ρb)/θ. (2) where. Rf = the retardation factor (unitless) ρb (kg/L) first guesses for the retardation factor, R, to insert into the 4-parameter analytical code concentration in the aqueous solution, mineralogy of the solid-phase, and The Freundlich empirical equilibrium-isotherm formula usually ca retardation - if that ray is more retarded it turns blue extinction in XPL-no retardation, birefringence.