This is a Powerpoint presentation of black hole

This is a Powerpoint presentation of black hole

1. Black Holes O. S. Vidyasagar

2. What are Black Holes?

3. A black hole is a region in space where gravity is so strong that nothing, not even light, can escape from it. Black holes form when massive stars collapse under their own gravity at the end of their life cycles. The boundary around a black hole is called the event horizon, beyond which nothing can return.

4. The Black Holes In The View Of Stephen Hawking

5. Stephen Hawking was a renowned English theoretical physicist, cosmologist, and author, born on January 8, 1942, in Oxford, England, and passed away on March 14, 2018, in Cambridge, England Hawking was diagnosed with amyotrophic lateral sclerosis (ALS), a motor neuron disease, at the age of 21. He served as a Professor of Mathematics at the University of Cambridge from 1979 to 2009, a position once held by Sir Isaac Newton He proposed that black holes emit radiation, now known as Hawking radiation, which can lead to their eventual evaporation. Hawking’s life and work have inspired millions, demonstrating the power of human resilience and intellect.

6. Stephen Hawking made several groundbreaking contributions to our understanding of black holes. Here are some key points: Singularity and Event Horizon: Hawking, along with Roger Penrose, showed that when a star collapses, it forms a singularity, an infinitely dense point where the laws of physics as we know them break down. This singularity is surrounded by the event horizon, the boundary beyond which nothing can escape. Hawking Radiation: Perhaps his most famous contribution is the prediction of Hawking radiation. He proposed that black holes are not completely black but emit radiation due to quantum effects near the event horizon. This radiation causes black holes to lose mass and eventually evaporate over time. Area Theorem: Hawking’s area theorem states that the total surface area of a black hole’s event horizon can never decrease over time. This is analogous to the second law of thermodynamics, which states that the entropy of a closed system must always increase.

7. Parts of black hole:

8. Quiz time:

9. Who is known as the Black hole man?

10. What is the name of the black hole situated at the center of Milky Way galaxy?

11. The name of the black hole at the center of Milky Way galaxy is Sagittarius-A

12. Time for the last question Which black hole is the closest to Earth?