Beyond Penguins and Polar Bears. Το Ταξίδι της Ηλεκτρικής Ενέργειας -The Journey of Electrical Energy. Noesis - Αρχική Σελίδα. Science Toys. Εταιρεία.
Human body. Teaching suport. Teaching support Greek sites. Home - History of Science and Technology - Research Guides at University of Delaware. Eratosthenes Experiment 2015. Welcome to the Community for the Eratosthenes Experiment 2015-17 for the Measurement of the Earth's Circumference!
For details on the event and the latest photo contest, please see here and here. Guidelines for participation.