Basics 1

Science is a way of asking questions about the physical universe. It is not simply a set of facts or a catalog of answers but rather a way of conducting an ongoing dialog with our physical surroundings. Like any human activity, science is enormously varied and rich in subtleties. Nevertheless, there are a few basic steps that, taken together, can be said to comprise the

Scientific Method




The scientific method can be illustrated as an endless cycle of collecting

Observations (Data)

Identifying Patterns and Regularities (in the Data)

Forming Hypothesis

Making Predictions and Collecting more Observations

Some important points should be made about the scientific method:

  • Observations and experiments must be reported in such a way that anyone with the proper equipment can verify the results.
    Scientific results must be reproducible.

  • Scientists are not required to observe nature with an `open mind', with no preconceptions about what they are going to find. Usually most experiments and observations are designed and undertaken with a specific hypothesis in mind, and most researchers have a preconception whether that hypothesis is right or wrong. The most important point about the scientific method is that scientists have to believe the results of their experiments and observations, whether they fit preconceived notions or not.

  • The cycle is continuous; it has no end. Science does not provide final answers, nor is it the search for the ultimate truth. Instead it is a way of producing successively more detailed and exact descriptions of wider and wider areas of the physical world, descriptions that allow us to predict more of the behavior of that world with higher and higher level of confidence.




In order to be able to handle numbers which differ considerably in magnitude, i.e. are very large or very small, one uses a

Scientific Notation

Physics has

Fundamental Quantities

which are given in

Fundamental Units

and all other quantities and units are derived therefrom.

Ch. Elster
Aug 26 14:27:03 EDT 2019