Basic Concepts - Electronics and Electrical Engineering - Electronics and Communication Engineering (ECE)

 Page 1


Lecture 
BASIC ELECTRICAL AND ELECTRONICS
ENGINEERING
ECE-131
Delivered by:
Irfan Ahmad Pindoo
Assistant Professor 
Department of ECE
Lovely Professional University
Page 2


Lecture 
BASIC ELECTRICAL AND ELECTRONICS
ENGINEERING
ECE-131
Delivered by:
Irfan Ahmad Pindoo
Assistant Professor 
Department of ECE
Lovely Professional University
Bohr’s Model of an atom
Page 3


Lecture 
BASIC ELECTRICAL AND ELECTRONICS
ENGINEERING
ECE-131
Delivered by:
Irfan Ahmad Pindoo
Assistant Professor 
Department of ECE
Lovely Professional University
Bohr’s Model of an atom
Democritus
• This is the Greek 
philosopher Democritus 
who began the search for a 
description of matter more 
than 2400 years ago.
– He asked: Could matter 
be divided into smaller 
and smaller pieces 
forever, or was there a 
limit to the number of 
times a piece of matter 
could be divided? 
400 BC
Page 4


Lecture 
BASIC ELECTRICAL AND ELECTRONICS
ENGINEERING
ECE-131
Delivered by:
Irfan Ahmad Pindoo
Assistant Professor 
Department of ECE
Lovely Professional University
Bohr’s Model of an atom
Democritus
• This is the Greek 
philosopher Democritus 
who began the search for a 
description of matter more 
than 2400 years ago.
– He asked: Could matter 
be divided into smaller 
and smaller pieces 
forever, or was there a 
limit to the number of 
times a piece of matter 
could be divided? 
400 BC
Atomos
• His theory: Matter could 
not be divided into smaller 
and smaller pieces forever, 
eventually the smallest 
possible piece would be 
obtained.
• This piece would be 
indivisible.
• He named the smallest 
piece of matter “atomos,” 
meaning “not to be cut.”
Page 5


Lecture 
BASIC ELECTRICAL AND ELECTRONICS
ENGINEERING
ECE-131
Delivered by:
Irfan Ahmad Pindoo
Assistant Professor 
Department of ECE
Lovely Professional University
Bohr’s Model of an atom
Democritus
• This is the Greek 
philosopher Democritus 
who began the search for a 
description of matter more 
than 2400 years ago.
– He asked: Could matter 
be divided into smaller 
and smaller pieces 
forever, or was there a 
limit to the number of 
times a piece of matter 
could be divided? 
400 BC
Atomos
• His theory: Matter could 
not be divided into smaller 
and smaller pieces forever, 
eventually the smallest 
possible piece would be 
obtained.
• This piece would be 
indivisible.
• He named the smallest 
piece of matter “atomos,” 
meaning “not to be cut.”