Tuesday, March 22, 2011

The Role of Measurement in Science


Role of Measurement in Science




  • Measurement is a method/procedure that allows one to associate a number with a physical quantity such as time, energy, density, etc.
  • Physics interact with the "Universe"/"Nature"/"Real World" by means of measurements.
  • Measurement is the ultimate authority to which a physicist turns to determine the correctness of his conclusions.
  • Reality to a physicist is that which he can observe through measurement.
  • The fundamental physical quantities - Length, Time, Mass, Temperature, and Charge - are all defined by a measuring process. They are operationally defined. All other physical quantities such as velocity, energy, and force are defined by an equation in terms of the five fundamental quantities. They represent derived quantities.
Physical models, no matter how beautiful or reasonable they may seem, will not be accepted as valid until their predictions are confirmed by experimental measurements. Models must be vulnerable to disproof. They must be testable.

http://faculty.wwu.edu/vawter/PhysicsNet/Topics/ModelsInScience/MeasurementsRole.html







13 comments:

  1. HELP!!!! I DONT KNOW WHAT TO DO FOR THE BUSCH GARDENS WRITE UP!!!!!
    Brooke,blue

    ReplyDelete
  2. I need help with what to do for this busch gardens lab write up!!
    Justin/blue

    ReplyDelete
  3. It is an experiment, you came up with questions you wanted to find out about, did some research,
    made some rough draft predictions, figured out what and how you could measure / observe gather data to find out if your predictions... the independent and dependent variables ... increase, decrease, or stay the same ? It is the same thing we do with every experiment that is why we call it the scientific method!

    Now re4cord your data, do any calculations and graph your results.

    Once done you write your conclusion? Were your predictions accurate, inaccurate or you can't tell?

    How do you know?

    ReplyDelete
  4. When is this due?
    Justin/blue

    ReplyDelete
  5. What are we supposed to write on the blog, for Evidence of Review?

    Should I just comment on the blog above?

    Savanah Yellow

    ReplyDelete
  6. Thank you for the review blog! I have written down some of the things I didn't have in my Glossary.

    Savanah Yellow

    ReplyDelete
  7. Don't forget to go to the Blog site listed on your Progress log too..

    ReplyDelete
  8. Thank you for the review! I learned and took Important notes on the review! Thank you :)

    ReplyDelete
  9. Mr. V is there any extra credit besides building a computer? I know I really messed up on the Rerun and Im willing to work hard to get some points to fix that mistake.
    Larry
    Yellow

    ReplyDelete
  10. There is a Bonus topic that you could expand on this week's Progress Log.

    ReplyDelete