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Our latest release
Sun's Apparent Path (North)
A tennis ball is thrown up in the air. A stroboscope illuminates the ball at uniform time intervals when you select "stroboscope". You have a cursor to calculate each position and you just need to rollover the balls to display the photographic shooting time.
Click on {print} to print the current page.
Click on 'cursor' to make some measurements.
Rollover each picture to display its photographic shooting time.
Enroll your school to take advantage of the sharing options. Once registered, the links below will include activation codes.
