The first electric refrigerator was made in 1913. Before then, people found other ways to store their food. In cold areas, ancient people could freeze
Sometime around 1674 the British flag became formally known as the ‘Union Jack’ when mounted on a warship and the ship was not in harbour.
Have you ever noticed something interesting about cameras, though? What shape is the camera lens? What shape are the pictures they produce? That’s right! Round lenses produce rectangular pictures! What’s up
Is it magic? Nope! It’s science — and it’s all about water. The regular white glue most students know so well is made up of a variety