Speed of Life?

You thought of meeting your date in the same place you first met? Well think again, you will never be at the same place ever again. Firstly, Earth is rotating. You can argue that within a day, your position on the Earth relative to the sun will be the same after about 24 hours (1…

What is the ‘slowest’ speed of Light?

Last time, I discussed the Speed of Gravity, and said it is equal to the Speed of Light in vacuum, but what is the Speed of Light? Easy question, 299,792,458 metres per second, or often rounded off to 300,000 km/s. This is the speed of light in vacuum, denoted by the ‘c’. This is the maximum…

Space-time fabric

Before Einstein, the viewpoint of scientists was that Time was Absolute. It does not change for anyone. You can imagine it as the whole universe having a single pace of time. So if an hour has passed for me, an hour would pass for anyone travelling with some velocity, an hour for someone on top…