For a full Description see Finding the curvature of the Earth.
Click a Button to Start a Demo. Click again to skip one step. Click the Animation to start/stop. See also Controls below.
Use this Formular to convert between different lengh units. You can Copy/Paste the results into input fields in the other Forms.
Use this panel to save a certain App state by Get App State and use Copy/Paste to save the state in an external text file. Use Copy/Paste to copy a saved state from an external text file into this panel and click Set App State to activate this state. You can change the Parameters in this panel and apply them by pressing the RETURN button on the keyboard.
Use Get App Url to get an URL containing the current App State. Click Set App State oder copy the URL into any browser address field to go to this page and display the current App State.