Hypotheses, theories, laws and principles?

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SUMMARY

The discussion centers on the distinctions between hypotheses, theories, laws, and principles in the context of physical science. Key examples include Bernoulli's principle and Hooke's Law, which illustrate how principles can be viewed as fundamental laws or normative rules. Participants express confusion over the terminology, particularly regarding the interchangeability of 'principle' and 'law'. The conversation highlights the need for clarity in understanding these scientific concepts and their applications.

PREREQUISITES
  • Understanding of scientific terminology, specifically hypotheses, theories, laws, and principles.
  • Familiarity with examples of scientific laws such as Hooke's Law and Bernoulli's principle.
  • Basic knowledge of the scientific method and how scientific concepts are validated.
  • Awareness of the differences between descriptive and normative rules in science.
NEXT STEPS
  • Research the differences between scientific hypotheses, theories, and laws in detail.
  • Explore the implications of Bernoulli's principle in fluid dynamics.
  • Study Hooke's Law and its applications in physics and engineering.
  • Investigate the role of principles in scientific inquiry and their relationship to laws.
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Students in physical science, educators teaching scientific concepts, and anyone interested in clarifying the distinctions between scientific hypotheses, theories, laws, and principles.

wrongusername
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I had this discussion about the differences between hypotheses, theories, and laws in my physical science class today, and I suddenly remembered the principles I had learned about in physics (e.g. Bernoulli's principle, Pauli exclusion principle). I was curious how principles fit into this whole hypotheses/theories/laws thing, but unfortunately the teacher thought I was talking about values (like the principles scientists work by) and I couldn't quite explain what I was talking about. So can somebody please clarify this for me? :smile:
 
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wrongusername said:
I had this discussion about the differences between hypotheses, theories, and laws in my physical science class today, and I suddenly remembered the principles I had learned about in physics (e.g. Bernoulli's principle, Pauli exclusion principle). I was curious how principles fit into this whole hypotheses/theories/laws thing, but unfortunately the teacher thought I was talking about values (like the principles scientists work by) and I couldn't quite explain what I was talking about. So can somebody please clarify this for me? :smile:
This is probably the answer you are looking for.

http://chemistry.about.com/od/chemistry101/a/lawtheory.htm
 
Don't forget Hooke's Law which is about as rigid as the springs it touches upon.
 
I think 'principle' is interchangeable with 'law' in most cases.
 
Tinyboss said:
Wikipedia has a decent discussion on it.

A principle is one of several things: (a) a descriptive comprehensive and fundamental law, doctrine, or assumption; (b) a normative rule or code of conduct, and (c) a law or fact of nature underlying the working of an artificial device.

Principle as scientific law
Laws Physics. Laws Statistics. Laws Biological. Laws of nature are those that can not be proven explicitly, however we can measure and quantify them observing the results that they produce.

Pulled from the Wikipedia page. So are principles "fundamental" laws or, as Jimmy said, usually "just" laws?

Why do they have different names then?



Jimmy Snyder said:
Don't forget Hooke's Law which is about as rigid as the springs it touches upon.

How would this fit into the discussion about principles? Just wondering.
 

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