CalcTool: Most accessed calcs


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	To remove this ad and customize your own favorites list, just sign up and sign in for free. Combinations, permutations Calculates nPr and nCr for n and r. (3774) Reynolds number From the flow conditions and viscosity. (2371) Porosity and permeability Determination using Darcy's law. (1906) FRET efficiency Finds critical distance and efficiency. (1868) Simple pendulum Period, height, energy and speed calculation. (1674) Reflection and refraction Calculates angles, quantites and constants. (1394) Diffraction grating Finds angles of first few diffraction orders. (1328) Hagen-Poiseuille equation Pressure drop for laminar flow in pipe. (1293) Centrifugal force Apparent acceleration and force. (1244) Energy of a Photon For a photon of the given wavelength. (1145) Flow in pressurized pipe Pressure drop by Hazen-Williams equation. (1052) Arcsin, arccos and arctan Gives the reverse of the sin, cos and tan functions. (1002) Gravity-fed pipe flow Hazen-Williams formula for a full pipe. (933) n (Sellmeier equation) Refractive index at a given wavelength. (929) Thin film optical coating Reflectivity at angle and wavelength. (876)


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