1. C H A P T E R 1 Introduction and Mathematical Concepts
Units: Unit conversion, Dimensional Analysis
Trigonometry
Vectors

2. 1.1 The Nature of Physics
What is physics?

3. 1.1 The Nature of Physics
Physics is the study of the fundamental laws of nature.

4. 1.1 The Nature of Physics
Physics is the study of the fundamental laws of nature.
Physics deals with the behavior and structure of matter.

5. 1.1 The Nature of Physics
Physics is the study of the fundamental laws of nature.
Physics deals with the behavior and structure of matter.
Physics is very fundamental and the most basic of the sciences.

6. 1.1 The Nature of Physics
Physics is the study of the fundamental laws of nature.
Physics deals with the behavior and structure of matter.
Physics is very fundamental and the most basic of the sciences.
The beauty of physics is its capacity for predicting how nature will behave in one situation on the basis of experimental data obtained in another situation.

7. Sub-Fields of Physics
Introductory physics is divided into the following
sub-fields:
Mechanics
Thermal physics
Wave motion and sound
Electricity and magnetism
Light and optics
Modern physics

8. Sub-Fields of Physics
Introductory physics is divided into the following
sub-fields:
Mechanics (Chapters 1-11)
Thermal physics (Chapters 12-15)
Wave motion and sound (Chapters 16-17)
Electricity and magnetism (Chapters 18-24)
Light and optics (Chapters 25-27)
Modern physics (Chapters 28-32)

9. Units
    
System SI
CGS BE
SI stands for the French phrase "Le Systeme International d'Unitus."
CGS - centimeter (cm), gram (g), and second.
BE - British Engineering.

10. Units System SI CGS BE Length meter (m) centimeter (cm) foot (ft)
    
System SI
CGS BE
Length
meter (m)
centimeter (cm)
foot (ft)
SI stands for the French phrase "Le Systeme International d'Unitus."
CGS - centimeter (cm), gram (g), and second.
BE - British Engineering.

11. Units System SI CGS BE Length meter (m) centimeter (cm) foot (ft) Mass
    
System SI
CGS BE
Length
meter (m)
centimeter (cm)
foot (ft)
Mass
kilogram (kg)
gram (g)
slug (sl)
SI stands for the French phrase "Le Systeme International d'Unitus."
CGS - centimeter (cm), gram (g), and second.
BE - British Engineering.

12. Units System SI CGS BE Length meter (m) centimeter (cm) foot (ft) Mass
    
System SI
CGS BE
Length
meter (m)
centimeter (cm)
foot (ft)
Mass
kilogram (kg)
gram (g)
slug (sl)
Time
second (s)
SI stands for the French phrase "Le Systeme International d'Unitus."
CGS - centimeter (cm), gram (g), and second.
BE - British Engineering.

13. Units of length
Early units of length were associated with the human body.

14. Units of length
Early units of length were associated with the human body.
The foot was originally defined to be the length of the royal foot of King Louis XIV.

15. Units of length
Early units of length were associated with the human body.
The foot was originally defined to be the length of the royal foot of King Louis XIV.
These units are not reproducible.

16. Earlier Definition of meter
Metre (meter) originated from the Greek word metron meaning “measure”.

17. Earlier Definition of meter
Metre (meter) originated from the Greek word metron meaning “measure”.
In 1793, the meter was defined in terms of the distance measured along the earth's surface between the north pole and the equator.

18. Standard Meter Bar
In 1799, a platinum-iridium meter bar, was used to define meter.

19. Standard Meter Today
Since 1983, meter is defined using the speed of light, m/s.
The meter is the length of the path traveled by light in vacuum during a time interval of 1/ of a second.

20. Standard Kilogram Today
The standard platinum-iridium kilogram is kept at the International Bureau of Weights and Measures in Sevres, France.

21. Units of time The Earth takes 24 hours to rotate once.
Before 1956, the mean solar day was defined to be 24x60x60 = 86,400 seconds.

22. Standard Second Today A cesium atomic clock.
The second is the duration of periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom.

23. SI Base Units Physical Quantity Unit Name Symbol Time second s Length
Physical Quantity
Unit
Name
Symbol
Time
second s
Length
meter m
Mass
kilogram kg
Electric current
ampere A
Temperature
kelvin K
Amount of substance
mole
mol
Luminous intensity
candela cd

24. Some SI Derived Units
Area - m2
Volume - m3
Density - kg/m3

25. Conversion of Units

26. Dimensional Analysis
In physics, the term dimension is used to refer to the physical nature of a quantity and the type of unit used to specify it.
Length- L, Mass-M, Time-T