Difference between revisions of "Scientific method"

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(Deleted meaningless example - nobody asserts that *only* human actions are responsible for climate change, and there is plenty of dispute over the issue, despite broad scientific consensus.)
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The '''Scientific Method''' is a procedure for the dispassionate inquiry into any and all phenomena. 
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#REDIRET [[Scientific theory]]
It involves the careful collection of data and the development of [[Theory|theories]] which organize those facts into [[Falsifiablity|falsifiable]] explanations. 
 
When theories move away from falsifiability and become dogmatic, then we say they are not scientific (see [[pseudoscience]]).
 
 
 
Each scientific theory is built up as a deliberately fragile structure, like a house of cards, that can collapse if any foundational principles are proven to be false.
 
 
 
 
 
==The four steps of the scientific method {{fact}}==
 
 
 
1. '''Careful observation and description of a phenomenon or group of phenomena.''' (I observe that a heavy steel ship floats on water)
 
 
 
2. '''Formulation of an hypothesis to explain the phenomena.''' (I propose that it is the overall density of the ship, rather than its weight that determines if it floats)
 
 
 
3. '''Use of the hypothesis to predict the existence of other phenomena, or to predict the results of new observations.''' (To see whether my hypothesis holds true, I predict that any object that is less dense than water will float and any object more dense than water will sink; I test various objects that are more or less dense than water by putting them in a tub.)
 
 
 
4. '''Replication of the experiments and results by independent experimenters.''' (rather than take my word for it, my neighbors try the same experiment and look for any flaws in my methodology).
 
Mathematical derivations are also commonly used to support a theory and predict results, but only an experiment can provide conclusive evidence (relativity, for example, could not have been predicted by math alone).
 
 
 
 
 
 
 
==References==
 
<references/>
 
 
 
* http://teacher.pas.rochester.edu/phy_labs/AppendixE/AppendixE.html
 
* http://physics.ucr.edu/~wudka/Physics7/Notes_www/node6.html
 
* http://biology.clc.uc.edu/Courses/bio104/sci_meth.htm
 
[[category:science]]
 

Revision as of 18:51, May 17, 2007