1. Plasma
bmitted by:
Halima Usman
Arooj Anwer
Sidra Butt
Farah Masood
Aqsa Aftab

2. What is plasma?
 Plasma is considered as the fourth state of
matter.
 It does not have any definite shape and
volume.
 Conducts electricity.
 By heating plasma ionizes.
 By applying magnetic field
plasma deflects

3. Discovery of Plasma
 The existence of plasma was first discovered by Sir
William Crookes.
 He used Crookes tube, an experimental electrical
discharge tube in which air is ionized by the application
of a high voltage through a voltage coil.
 Sir J.J. Thomson, a British physicist,
identified the nature of the matter in 1897.
 It was not until 1928 that the term “plasma”
was coined by Irving Langmuir
Sir William Crookes

4. Properties of Plasma
 Consist of free moving ions and electrons
 It can be accelerated and steered by electric and
magnetic fields.
 Stars are predominantly plasma as are most
space and astrophysical objects.
 Energy is needed to strip electrons from atoms
to make plasma

5. Where Plasma exists?
 Lightning
 Nebulae
 Auroras (Northern Lights)
 Interstellar space
 The Sun
 The solar wind
 Galaxies
 Flames as plasmas

7. Applications of Plasma
 Plasmas are conductive and respond to electric and magnetic fields
and can be efficient sources of radiation
 Recent new discoveries have occurred in understanding extremely
cold plasmas which condense to crystalline states, the study of
high-intensity laser interactions, new highly-efficient lighting
systems, and and help in computer manufacturing
 In present, there is a research going on plasma medicine.
 Plasma medicines, experiments confirm that plasma can be
effective in in vivo antiseptics without affecting surrounding tissue
and, moreover, stimulating tissue regeneration.
 Industrial and extractive metallurgy surface treatments such
as thermal spraying(coating), etching in microelectronics, metal
cutting and welding

8. 1. A plasma display panel (PDP) is a type of flat panel
display common to large TV displays 30 inches (76 cm) or
larger.
They are called "plasma" displays because the
technology utilizes small cells
containing electrically charged ionized gases, or what are
in essence chambers more commonly known
as fluorescent lamps.

9. Thank you for
listening!