Introduction for S4-S6

What does space do? Until just over 100 years ago, the answer to this question would have been something like “nothing really”. Space was considered as little more than a set of axes e.g. x,y,z with which an object’s position could be described using a set of coordinates. Similarly time was considered to be something which did nothing more than tick forward regularly at the same rate, no matter where you happened to measure it. This was entirely sufficient for Newton’s laws of gravity, discovered in the 17th century, and based on the idea that two masses exert an attractive force on each other. Newton’s laws had been used very successfully to describe gravitational effects on Earth and beyond e.g. the motion of the planets around the Sun. [Read more…]

Leave a Reply

Your email address will not be published. Required fields are marked *