DEFINITION OF TIME IN SCIENCE.
Time is something that we experience on a daily basis; characterized by notions such as the past, present and the future. Its progression is embodied in our continued experience of the future becoming the present, while the present becomes the past. In fact, it would be impossible to talk of motion or dynamics without the concept of time and its progression. In this sense, it is very similar to our experience of space. Just as it is natural to ask where a certain event has taken place, it is also natural to ask when it occurred. Therefore, time, along with spatial coordinates, is a marker for defining events. However, it is clear that time is different to space in how we experience it in our daily lives. Whereas we feel free to roam in any spatial coordinate that we desire, we feel compelled to follow time forward and always at the same pace. However hard we try the clock will always tick-tock as it always has and will. The future will displace the present, which will itself in turn be driven to the past. This everyday experience of time as possessing a clear (always forward) direction is strangely not borne out in fundamental descriptions of nature and this continues to be one of the biggest puzzles in theoretical fundamental physics.
B-THEORY OF TIME.
Time is something that we experience on a daily basis; characterized by notions such as the past, present and the future. Its progression is embodied in our continued experience of the future becoming the present, while the present becomes the past. In fact, it would be impossible to talk of motion or dynamics without the concept of time and its progression. In this sense, it is very similar to our experience of space. Just as it is natural to ask where a certain event has taken place, it is also natural to ask when it occurred. Therefore, time, along with spatial coordinates, is a marker for defining events. However, it is clear that time is different to space in how we experience it in our daily lives. Whereas we feel free to roam in any spatial coordinate that we desire, we feel compelled to follow time forward and always at the same pace. However hard we try the clock will always tick-tock as it always has and will. The future will displace the present, which will itself in turn be driven to the past. This everyday experience of time as possessing a clear (always forward) direction is strangely not borne out in fundamental descriptions of nature and this continues to be one of the biggest puzzles in theoretical fundamental physics.
B-THEORY OF TIME.
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