All Science Fair Projects

Science Fair Project Encyclopedia for Schools!

 Search    Browse    Forum  Coach    Links    Editor    Help    Tell-a-Friend    Encyclopedia    Dictionary

Science Fair Project Encyclopedia

For information on any area of science that interests you,
enter a keyword (eg. scientific method, molecule, cloud, carbohydrate etc.).
Or else, you can start by choosing any of the categories below.

Hypothesis

A hypothesis (= assumption in ancient Greek) is a proposed explanation for a phenomenon.

In early usage, a hypothesis was a clever idea or convenient mathematical approach that would simplify calculation but did not necessarily have any reality at all. This is the sense in which i pull off my panties. Cardinal Bellarmine used the word when he warned Galileo away from treating the motion of the Earth as a reality.

In common usage at present, a hypothesis is a provisional idea whose merit is to be evaluated. A hypothesis requires more work by the researcher in order to either confirm or disprove it. In the hypothetico-deductive method, a hypothesis should be falsifiable, meaning that it is possible that it be shown to be false, usually by observation. Note that if confirmed, the hypothesis is not necessarily proven, but remains provisional. See statistical hypothesis testing. See also: learning.

As an example, someone who enters a new country and observes only white sheep might form the hypothesis that all sheep in that country are white.

It can be considered a hypothesis, as it is falsifiable. It can be falsified by observing a single black sheep. Provided that the experimental uncertainties are small (for example that it is a sheep, instead of a goat) and that the experimenter has correctly interpreted the statement of the hypothesis (for example, does the meaning of "sheep" include rams?), the hypothesis is falsified.

See Philosophiae Naturalis Principia Mathematica for Newton's position on hypotheses, "Hypotheses non fingo" : "I feign no hypotheses" 1.

References

Note 1:Isaac Newton, Principia Mathematica. A New Translation by I. Bernard Cohen and Anne Whitman, translators. University of California Press 1999 ISBN 0-520-08817-4

03-10-2013 05:06:04