Do you know how lightning is created?
The video explains how lightning is created.
Physics
Time for an experiment
The video shows what happens to a candleflame when it doesn’t have any oxygen.
Visit to the National Observatory of Athens
The video is a short virtual tour of the National Observatory of Athens. The viewer can see the meridian transit telescope, a replica of the Antikythera mechanism (the world’s oldest computer) and the Doridis telescope.
