PHYS 1540 Lecture #1 -...

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PHYS 1540 Lecture #1        Professor:  Stanley Jeffers    Date:  2010-09-14 Head on over to 242 Petrie Science Building to pick up the lab manual as well as a booklet full of  power point slides that will be used during class. To Access audio recordings log-in to WebCT and click  links to audio recordings. Newton clarified many aspects of motion through his studies. He clarified things that genius’ in the  past such as Aristotle couldn’t. Physics:  To develop theories about the physical world based on experiments. A physical theory is a guess expressed mathematically about how a system works The theory makes predictions about how a system should work. Experiments check the theories’ predictions. If the predictions had faults you must return to your  original assumptions and critically analyze and change them accordingly to correspond with the  experiments results Every theory is a work in progress and subject to future change and modification. They are not  dogma for all times but are subjected to future revision in the presence of new evidence. The Fundamental Quantities and Their Dimension Length [L], Mass [M] and Time [T]. All other  physical quantities can be constructed from these three. Example:  = T 2π lg     = T2 4π2lg   = / T2 4π2LLT2   As you can observe that both sides of the equation have the same dimensions thereby increasing  the likeliness of an accurate and true equation. Without there being the same dimensions on both  sides the equation is definitely incorrect. There are weaknesses in dimensional analysis such as 
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This note was uploaded on 03/10/2011 for the course PHILOSOPHY 1000 taught by Professor Judithmarypelham during the Spring '11 term at York University.

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PHYS 1540 Lecture #1 -...

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