Bananas in Norway - exotic fruits herald the era of globalization in trade
This is one of the first batches of banana that was sent to Norway. One of the people in this picture is Christian Mathiessen, the founder of Norway’s biggest fruit importer, Bama. Norway was the second country to import bananas in Europe, after the United Kingdom. Before global trading became as it is today, people really didn’t encounter many products that weren’t made locally. However, the 20th century saw a massive increase in global trade, and soon enough all sorts of goods would be travelling around the world.
Einstein's Theory of Relativity - groundbreaking new theory proposes that the laws of physics appear the same to all observers and that the speed of light is unchanging
Albert Einstein determined that the laws of physics are the same for all non-accelerating observers, and that the speed of light in a vacuum was independent of the motion of all observers. As a result of these principles Einstein deduced there is no fixed frame of reference in the universe. Everything is moving relative to everything else. This was the theory of special relativity. It introduced a new framework for all of physics and proposed new concepts of space and time.
It is known as special relativity because it applies only to special cases.: frames of reference in constant, unchanging motion. Einstein then spent 10 years trying to include acceleration in the theory and published his theory of general relativity in 1915. In it, he determined that massive objects cause a distortion in space-time, which is felt as gravity.
Space.com - Einstein's Theory of General Relativity
The Conversation - How Einstein's Theory of General Relativity Killed Off Common-Sense Physics