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Get Full Access to University Physics, Volume 3 - 17 Edition - Chapter 3 - Problem 72
Get Full Access to University Physics, Volume 3 - 17 Edition - Chapter 3 - Problem 72

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ISBN: 9781938168185 2032

## Solution for problem 72 Chapter 3

University Physics, Volume 3 | 17th Edition

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Problem 72

A microscope slide 10 cm long is separated from a glass plate at one end by a sheet of paper. As shown below, the other end of the slide is in contact with the plate. The slide is illuminated from above by light from a sodium lamp $$(\lambda=589 \mathrm{~nm})$$, and 14 fringes per centimeter are seen along the slide. What is the thickness of the piece of paper?

Text Transcription:

lambda=589 nm

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Pseudoscience: UFO, ESP, perpetual motion machines (violate second law of thermo), polygraphs Evaluation of a claim: -Are the facts true as stated -Is there an alternative explanation (Occam’s Razor- simplest description is the best) -Is the claim falsifiable * -Have the claims actually been tested -Do claims require change in accepted ideas The Organization of Science: Disciplines: -Historical -Modern Approaches: -Field Researcher (Data driven) -Experimentalist (Data driven) -Theorist (Math and computers to find patterns and predict things) The Branches of Science: -Physics (Fundamental aspects of nature) -Chemistry (Atoms in combination) -Biology (Living systems) -Astronomy (Objects in space) -Geology (Earth) Types of Research: 1.) Basic Research: Expanding knowledge of fundamentals of nature 2.) Applied Research: Specific applications (better heart pump, bigger tv) Funding: US Gov’t: \$130 Billion (Biggest funding goes to Dep’t of Defense) Getting funds: 1.) Great Idea 2.) Write a grant (~20 page paper of new idea) 3.) Peer Review (Grant is ranked against other grants- ~20 scientists read and score your grant) 4.) In physics ~5% get money (students, universities, developing tech) Communication among scientists: -Collaborate -Scientific meetings -Peer reviewed journals -Students (grad and undergrad)

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