Gyrodial shows equality of apparent
Sun and true Earth rotations, proving by
both apparent gyroscope and real shadow
motions that these all are caused solely
by Earth's rotation: both spikes cast single
shadow by synchronization to Sun with
gyroscope below despite Earth's rotation.
This didactical toy is copyrighted.
It is 3D: click it with
mice to rotate and
roll the middle
button to zoom.
This didactical toy shows constant rotation of Earth proving that it is cause of Sun's apparent movement.
Gyrodial's design is created by Andrija Radović, http://www.andrijar.com All inquiries should be sent to firstname.lastname@example.org