Maths Museum Museum
    Armillary Sphere Maths Museum
The Armillary Sphere in the musem shows the sun travelling around the earth, as this is what people believed during the Renaissance when it was made. We now know that the earth travels around the sun. This period is what we recognise as a year, although the earth revolves on its own axis once every day. This applet shows the current areas of day and night across the world as the earth spins on it's axis.

Please wait, applet loading.

This is a Mercator projection of the world showing the current areas of day and night. The map will be updated every five minutes as long as this page remains loaded.

© 1996 Edward R. Hobbs
This applet was created by Ed Hobbs. Visit Ed's Java Arcade where there are plenty of other educational applets including a trip to Mars and the Lissajous Lab, where you can generate your own patterns.
Back to the Gallery Back to Artefact