Please enable JavaScript.
Coggle requires JavaScript to display documents.
Stephen Hawking and his Black Hole Theory, download (3) - Coggle Diagram
Stephen Hawking and his Black Hole Theory
Life of Stephen Hawking
Who Is Stephen Hawking?
Stephen Hawking was a British theoretical scientist who is famous for discovering black holes. It is amazing how he managed to do so many great things while being diagnosed with ALS at 21 years old.
Early Life
On January 8th, 1948, Stephen Hawking was born in Oxford, England. In School, he was not a very good student, and was near bottom of the class. He spent his time pursuing his own hobbies and he even built a computer from recycled spare parts with his friends.
University
Stephen Hawking entered the University of Oxford at the age of 17. He wished to study Mathematics there but at that time Oxford University did not give diplomas for that so instead he studied cosmology there. He did not study much, only 1 hour per day, but he still earned his honors in natural science and went to get a Ph.D in Cosmology at Cambridge University.
After Graduation
Stephen Hawking became a member of the Institute of Astronomy in 1968 at Cambridge. He continued to research there and after a few years he published his first book, in 1972,
The Large Scale Structure of Space-Time
. He returned to Cambridge in 1979 and became the Lucasian Professer of Mathematics there, a highly renowned teaching position.
1 more item...
Wife and Children
1 more item...
Books
1 more item...
How He Talked
1 more item...
Black Hole Theory
1 more item...
Disease
When Stephen Hawking was 21 years old, he was diagnosed with ALS, a disease that makes the nerves controlling your muscles shut down. This changed his life forever as he realised that he had little time left to live and he started studying and researching more.
Our Scientific Inquiry
Inquiry 1 Video
Inquiry 2 Video
Put Video Here
Keywords:
balloon foil star die collapse compress gravity dense matter fabric
marble ball curve hole pull objects edge event horizon trapped escape
facts about black holes
did you know that the first black hole was discovered in 1916
You Can't Directly See a Black Hole.
There are Three Categories of Black Holes.
If you fall into a black hole, theory has long suggested that gravity would stretch you out like spaghetti, though your death would come before you reached the singularity
do you know that if
two black holes meet the bigger black hole will consume the smaller one
did you know if black holes were not on the vacuum it would still not make any sound because the black hole sucks sound too!
did you know that Our Milky Way Probably Has a Black Hole
did you know that Black holes come in a range of sizes
What Are Black Holes
a Black hole is a region of space having a gravitational field so fierce that no matter or radiation can escape.
How Black Holes were discovered
The German scientist, Karl Schwarzchild was the first to discover black holes in 1915. A solution for general relativity was created by him for the case of perfectly spherical object in empty space.
How a Black Hole is Formed
When a star collapses, a stellar black hole is created. When an object as massive as a star collapses in on itself, the singularity is where the mass of the star is concentrated. This causes a supernova which is an exploding star that blasts part of the star into space.
Everything is trapped inside it, and nothing can go out because of the gravitational force.
How Black Holes Got Its Name
Before 1967, Black holes were called 'Black Starts'. However, an American scientist named John Wheeler made a new term for it, 'Black Holes'.
How a black hole looks like:
Stephen Hawking's Theory:
In 1974, Professor Stephen Hawking developed a theory called Hawking Radiation. When you implement quantum mechanics into the equation of black holes, you discover that there is thermal radiation emitted by the black hole because of the quantum effects near the event horizon.
How Long Do Black Holes last for?
Even if black holes were as large as the sun, it would take more than one millennium to die. That's 1000 years!
How
BIG
are Black Holes?
Black Holes can big or small. The smallest black holes are believed by scientists to be one atom however that atom has a mass of a mountain.
The smallest black holes formed at the beginning of the universe.
Stellar black holes are a type of black holes that can have a mass up to 20 times more than the mass of the sun. It is predicted that there are many in the milkyway galaxy.
The
LARGEST
type of Black Holes are supermassive black holes. These type of black holes have masses that are more than 1 million suns together. There is evidence discovered by science proving that there is one supermassive black hole in every large galaxy's center. The supermassive black hole in the Milky Way is Sagittarius A. Its mass is equal to about 4 million suns and can fit inside a large ball holding 2 or more million earths.
Supermassive black holes were made at the same time the galaxy they are in were made, scientists believe.
How are black holes being studied?
Black Holes are being studied using telescopes and satellites travelling in outer space by many space agencies such as NASA.
