W e l c o m e
Group Members
❑B.M Irfan-Ul-Furqan Mustafa
❑Muhammad Ahmad
❑Abdur Rafay
Groups Members
contents
❑Introduction❑History of Ideas about Black Holes❑Formation❑Characteristics of Black Hole❑Growth of Black Hole❑Size and Amount❑Gravitational Pull❑Falling a Body In Black Hole❑Conclusion
Introduction
❑ John Wheeler in 1969
❑ Black hole - a region in the space where the gravitational
pull is so strong that neither substance nor light can leave
this area.
History of Ideas about Black Holes
❑ In the 18th century John Michell and
Pierre-Simon Laplace
❑ In 1915 Albert Einstein
❑ Karl Schwarzschild (1916)
❑ Robert Oppenheimer and Hartland Snyder (1939)
❑ Stephen Hawking (Present)▪ The Black Hole War (Book)
Formation
❑What is Star ?
- Cloud Of Gases & Elements
- Gasses
- Hydrogen
- Helium
- Control Hydrogen Fusion
Life Cycle Of a Star
Life Cycle Of a Star
• f
Supernova
❑Star Collapses
– Supernova– Black Hole
– Neutron Star
Parts Of Black Hole
Parts of Black Hole
❑Event Horizon
– Outer Horizon
– Inner Horizon
❑Singularity
❑Ergosphere
Characteristics of Black Hole
❑ Although black holes come in a variety of masses and sizes, their structures are all alike.
❑ A black hole's entire mass is concentrated in an almost infinitely small and dense point called a singularity.
❑ Cannot be Captured by Camera.
❑ It is Impossible for us to know How Big a Black Hole is .
❑ Black holes can Swallow anything.
❑We Can Only See BH By Using IR Telescope.
Growth of Black Hole
❑ Could grow as massive as 50 billion suns
❑ Feed Gasses And Dust.
❑ Feed a Whole Star.
❑ Merging into each Other.
Size And Amount❑ Mass > Sun
❑ Size
❑ Lie at the hearts of galaxy (27,000 light-years away.)
Gravitational Pull
Falling a Body In Black Hole
❑Time Freeze
❑Gravitational Effect
❑Death
– Quick Death
– Very Quick Death
Researches
❑Largest Black Hole
– S5 0014+813 (Name)
– 40 Billion Times mass of The SUN. (Mass)
(40000000000)
– 236.7 Billion Km (Diameter)
Death Of Black Hole
❑Hawking Radiation
– Formation
– Process
– Death Process of BH
Questions
❑ Star
❑ Black Hole
❑ Hawking Radiation
Thanks For Your
ATTENTION