Topic 1realm Of Physics

Topic 1 Physics and Physical Measurements Contents: 1.1 The realm of physics 1.2 Measurement and uncertainties 1.3 Mathematical and graphical techniques 1.4 Vectors and scalars

Introduction WHAT IS PHYSICS? ,[object Object],[object Object],[object Object],[object Object]

PHYSICS & MATHS ,[object Object],[object Object],[object Object],[object Object],[object Object]

MEASUREMENTS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

THE INTERNATIONAL SYSTEM OF UNITS (SI)* ,[object Object],[object Object],[object Object],[object Object]

SI BASE UNITS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SI BASE UNIT OF LENGTH ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TYPICAL DISTANCES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SI BASE UNIT OF MASS ,[object Object],Cylinder of platinum and iridium 0.039 m in height and diameter The mass is not the weight (=measure of the gravitational force)

TYPICAL MASSES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SI BASE UNIT OF TIME ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TYPICAL TIMES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SI BASE UNIT OF TEMPERATURE ,[object Object],[object Object]

SI DERIVED UNITS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

COMMON SI PREFIXES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

CGS SYSTEM ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DIMENSIONAL ANALYSIS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

DIMENSIONAL ANALYSIS Notation: L length; M mass; T time [M][L 2 ] . [T -2 ] Energy [L] . [T -2 ] Acceleration [L] . [T -1 ] Velocity [L 3 ] Volume [L 2 ] Area [L] Distance DIMENSION QUANTITY

DIMENSIONAL ANALYSIS ,[object Object],[object Object],[object Object]

SIGNIFICANT FIGURES ,[object Object],[object Object],[object Object]

SIGNIFICANT FIGURES ,[object Object],3.50 x 10 -3 number of order unity power of ten

SIGNIFICANT FIGURES ,[object Object],[object Object],[object Object],[object Object],[object Object],v=d/t=2.5 m.s -1

SIGNIFICANT FIGURES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SIGNIFICANT FIGURES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],4 3 2 2

CONVERTING UNITS ,[object Object],[object Object],Convert 72 km.h -1 to m.s -1

Conversions ,[object Object],[object Object],[object Object],[object Object],[object Object]

KWh to J and J to eV ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SI Format ,[object Object],[object Object],[object Object],[object Object]

ORDER OF MAGNITUDES ,[object Object],[object Object]

ORDER OF MAGNITUDE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

ORDER OF MAGNITUDE ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Summary for Range of Magnitudes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Errors and Uncertainties ,[object Object],[object Object],[object Object],[object Object]

Mistakes ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Systematic Errors ,[object Object],[object Object]

Systematic Errors result from ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Random Errors ,[object Object],[object Object]

Random Errors result from ,[object Object],[object Object],[object Object],[object Object],[object Object]

Reducing Random Errors ,[object Object],[object Object],[object Object]

Accuracy ,[object Object],[object Object]

Precision ,[object Object],[object Object]

uncertainties ,[object Object],[object Object],[object Object],[object Object]

Expression of physical measurements and uncertainties ,[object Object],Real value or final value Approximate value or measured value Uncertainty

Types of uncertainties. ,[object Object],[object Object],[object Object],[object Object]

Working with uncertainties. ,[object Object],[object Object],[object Object],[object Object]

Working with uncertainties cont. Or Also for

Limit of Reading and Uncertainty ,[object Object],[object Object],[object Object]

Reducing the Effects of Random Uncertainties ,[object Object],[object Object],[object Object]

Diagramming Accuracy and Precision precise ,[object Object],Accurate

Diagramming Accuracy and Precision in relation to error and uncertainty figure 1

Plotting Uncertainties on Graphs ,[object Object],[object Object],[object Object]

Topic 1realm Of Physics

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Topic 1realm Of Physics