GPS Anti Spoof vs Microscope

Instantly compare observed celestial navigation altitudes with high precision, live calculated altitudes. Shoot the Sun, tap pause in the app, and get instant feedback. Standard version includes data for the Sun, Venus, and two stars. The Pro version of the app is for serious navigation use and includes data for the Sun, Moon, Venus, Mars, Jupiter, Saturn, the 57 standard navigational stars, plus Polaris. Both versions function off-network and at sea however the standard version only works for ten days off-network. The Pro version can function for weeks in the middle of the ocean without network access. This app calculates the exact sextant altitude that should be observed in celestial navigation at sea or on land assuming that the GPS position is correct. No paperwork is required, no tables of corrections. All corrections are included automatically: index error, system time error, dip of the horizon, refraction, temperature and pressure corrections to refraction, altitude above sea level, parallax, and also gravitational deflection of the vertical (a correction of up 2 nautical miles not handled by any other celestial navigation sight-clearing product) are all included automatically. If the GPS position is wrong, due to Spoofing at sea, observations will not match. With this app and occasional quick sextant sights, mariners can reliably detect GPS spoofing. No GPS Spoofing? The app also functions as a celestial navigation trainer: take a sextant sight and immediately compare against the app's display. No paperwork and instant feedback will improve celestial sextant skills in hours instead of days or weeks.  The app works off-network, even in the middle of the ocean. If a network connection is available, the app will download temperature and pressure information automatically. Or weather data can be entered manually, if desired. The ephemeris data is generated from the same JPL numerical integrations of lunar and planetary motions used by the official Nautical Almanac and Astronomical Almanac. All coordinates are accurate to one second of arc, and displayed altitudes are accurate to a tenth of a minute of arc.

Compound Microscope by EduTech Era is an interactive learning app designed to help students explore the microscopic world with ease. The app explains the structure, parts, and working of a compound microscope in a simple, student-friendly way. Students can learn how to use the microscope, understand magnification, and observe tiny living organisms like cells and microorganisms. With 3D interactive models that can be zoomed, rotated, and explored offline, learning becomes visual and engaging. Ideal for school-level biology, the app makes complex concepts easy to understand and encourages curiosity about the unseen world. Features: - Interactive 3D compound microscope with zoom & rotate - Learn microscope parts and their functions - Understand magnification and observation techniques - Explore cells and microorganisms - Works completely offline-no internet needed - Perfect for school biology and hands-on learning - Activity-based visuals to reinforce concepts Discover the microscopic world in a simple and interactive way with Compound Microscope by EduTech Era, your guide to learning biology effectively.