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 Abe_PSF2 |
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Abe_PSF2 shows how the wavefront shape and the transmission function of an optical system will affect its image blur or point spread function (PSF). Image degradation from wavefront effects such as third-order aberrations (coma, spherical, astigmatism) and defocus, Zernike polynomial coefficients, discontinuous phase errors (waffle, checkerboard, or random), and/or a subaperture phase plate are simulated. Blur growth from transmission losses due to obscurations from secondary mirror struts or a central obscuration are modeled, as well as apodization effects or speckle. The pupil can be round, hexagonal, or rectangular, and system wavelength and f/number are user-selectable. The graphical user interface is intuitive and straightforward. Abe_PSF2 is ideal for high school or college teachers and students interested in science, optics, or astronomy.
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Filesize: 108 K
Downloads: 324 |
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| Beam Analyzer |
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The Beam Analyzer is a "less is more" type of free engineering program that allows you to model beams for various kinds of loadings and then obtain the deflections and reactions at supports, using finite element method. The small Java-based application runs within your Web browser, providing a basic beam diagram with inputs for length, width, nodes, loadings, and constraints. Although the instructions are minimal, the program wakes up with a sample beam model that makes the product understandable (with a bit of experimentation). A simple Show Results function pops up a frame with the deflections and reactions for the nodes specified. Units are not indicated, so the user must keep track and stay consistent. A full version, which adds the ability to save the beam models and print the stress distribution diagrams, is also available.
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Filesize: 32 K
Downloads: 2894 |
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| Calc 98 |
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Calc98 is a calculator designed for scientific and engineering users. It includes scientific, statistics, financial, array and matrix, and time functions. It also includes a wide range of unit conversions, and a stopwatch. Calc98 is compact in terms of screen space, so you can keep it maximized while working within another application, and use the "always on top" option. You can also customize the appearance of Calc98 by resizing the buttons and their fonts, rearranging the keypads, etc. Other features include RPN option, the ability to save calculation data, ASCII conversion, keyboard shortcuts, and more.
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Filesize: 448 K
Downloads: 818 |
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| Calculait v1.5 |
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Calculait v1.5 is a multifunction calculator with full scientific, financial, statistics, and unit conversion functions. It's also a world clock. Although especially made for the nonprofessional, it has a slew of powerful functions to satisfy the more demanding user. It can calculate, for example, hyperbolic trigonometric functions, convert all manner of measures, and even tell the time in any major city on the planet. It features a scientific calculator, statistics calculator, financial calculator, equivalents converter, random number generator, animated message board, and a world clock.
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Filesize: 388 K
Downloads: 654 |
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| Convert and Calculate |
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Convert and Calculate converts between many types of common measurements and calculates download time based on the speed of the download and can calculate the final price after tax is added. The Conversions it can do are growing all the time, it now includes conversions of distance, time, area, degree (temperature), weight, and computer memory size (KB, MB, GB, bits, Bytes).
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Filesize: 1428 K
Downloads: 1566 |
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| Convert, v1.2 |
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Description: The program includes metric, American, British, old Russian systems of measurements. The following categories are supported: weight, length, area, volume, force, pressure, energy, capacity, speed, acceleration, brightness, angular measure, time, dose, temperature.
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Filesize: 60 K
Downloads: 690 |
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| Co-Solve-it! |
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Co-Solve-it! is a menu-driven DOS freeware program to calculate resin/solvent interaction, solvent properties, evaporation, flashpoint, and other blended properties. It can be used to estimate physical properties of solvents and resins mixtures, as well as coatings, inks, adhesives, cleaners, and others. Co-Solve-it! uses a modular approach. You access the various features and functions through the appropriate program module. Each module handles the specific calculations and graphing requirements of a separate problem. Simply select from the main menu and step through the procedures necessary to find the required data. The solvent database contains more than 1100 solvents, and the resin database contains more than 480 resins and pigments.
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Filesize: 4033 K
Downloads: 354 |
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| ESB Unit Conversion Utility |
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User friendly Win32 FREE Utility to easily convert between units of measurement. Includes Units for Temperature, Distance, Mass, Area, Volume, Pressure, Velocity, Acceleration, Force, Energy, Power, Fuel Consumption, Flow and Torque.
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Filesize: 441 K
Downloads: 443 |
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| Foot-Inch-Fraction Calculator |
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