MagnetMeter vs EZ Lunars Uso e estatísticas

The first and only Vector Magnetometer on the iPhone - Visualize the hidden world of magnetism around you in 3 dimensions (3GS or later!)! It can be perfectly used to explore and measure the direction and strength of the magnetic field of random objects around you (which can be quite fascinating!). With limitations (see docs) it can be used as a metal detector to find electric lines or pipes in walls (always good to check a wall before drilling in, at least better with this than not to check at all). Another application is to use this tool as a rough estimate of your north-south position on earth without using the GPS(!) - just by measuring the local earth magnetic declination (it works fine even while flying in a plane to check how the declination changes). Or simply explore your next Christmas present before opening it! Send us your results! The application has four different displays modes to visualize the magnetic field: - Absolute Mode: Displays the absolute magnetic field in microtesla (μT) measured by the magnetometer. - North Mode: A compass head-up displays the geographic north along with the pointer that directs to the magnetic north (thus display difference magnetic to geographic north). - Declination Mode: Two arrows will be displayed to indicate the declination of the earth magnetic field (0° just on equator, increasing to north with blue pointer direction up or south with blue pointer direction down). - Relative Mode: This mode shows the relative strength (absolute minus compensation vector) of the magnetic field in μT. … and five different display modes for acceleration visualization: - Absolute Mode: Displays the reverse acceleration of the iPhone (1g up when hold steady). - X-Rotation - Y-Rotation - Z-Rotation: The arrow will display the rotation around the X-, Y- and Z-Axis of the iPhone. The digital indicator shows the angle numerically (-180° - +180°). A way to calibrate will be added with one of the next updates, so you could use this as a level. - Relative Mode: This mode shows the relative strength (absolute minus compensation vector) of the acceleration. For a detailed documentation, please visit our product homepage. For recreational use only. However it CAN (!) be very accurate. The measurement is performed as good as possible (we try our best) by using the inbuilt accelerometer and magnetometer to their limits. The range of the accelerometer typically has a max of ±3g (~4.2g displayed here if combined) and each magnetometer usually recalibrates internally when over ±120μT in one axis. However, tell us your experience!

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EZ Lunars

Lunars are easy when you have the pre-computed lunar distance tables! Learn to do lunars as they were done when the pre-computed lunar distances were published in the Nautical Almanac over 100 years ago (last published in 1906). The ezLunarsOne lunar distance tables contain the lunar distances of up to 6 navigational bodies each day at 3-hour intervals. Each distance also has a proportional logarithm value to help interpolate the cleared distance to a time between the 3-hour values. A proportional logarithm table, moon augmented semidiameter, and second differences table are also included. Everything you need to perform lunars with a pencil and paper just like the ancient navigators! Most users, however, will let the app do all of the work. ezLunarsOne includes functions to guide you through the process of planning your lunar, making the observations and using the tables to compute Greenwich time. When your lunar is cleared, the solution can be output to a lunar clearing form just like you would do by hand. When you are ready to do lunars by hand, the lunar distance tables and blank clearing forms can be sent to a printer or PDF file for use outside the app. Since the lunar solution also requires data from the Nautical Almanac, the full Nautical Almanac from ezAlmanacOne is provided in the app. ezLunarsOne performs all astronomical calculations using the NOVAS 3.1 software from the US Naval Observatory (USNO) and a JPL ephemeris that covers the years 1960 through 2059. Since all calculations are performed in the software, ezLunarsOne is fully functional with no dependency on a data connection from your device.