Chicago (~40 miles)
Related to our work at Fermilab
Hopefully related to things you’re learning in school
Physics and astronomy, but also chemistry
Some really interesting questions about the world
Where do things happen? In space …
When do things happen? In time …
Because … he was Einstein!
Easily the greatest physicist and scientist in modern history. One of the great men of the 20th century
1905: Clerk in Patent Office
At older age!
Many, many discoveries. Easily could have won 3-4 Nobel prizes
He was a really smart man!
I will talk today about his two theories of relativity (Special Relativity and General Relativity)
E=mc2 (special relativity)
Black holes (general relativity)
This piece of paper is 8 inches long
It is 1.5 miles from the school to the store
I have to get up at 7 am
The bus is 20 minutes late
What do we mean by distance (such as 1.5 miles)?
What do we mean by a time (such as 7 am)?
The “prime mover”
An unknown, priviledged being in THE state of perpetual, absolute rest
Defined by (x, y, z) coordinate system with respect to the prime mover
Unique and clearly defined
Time is measured by the prime mover’s clocks
Aristotle (384-322 BC)
No such things as “absolute rest”
The laws of nature and physics are identical for anybody moving with a constant speed along a straight line
Galileo Galilei (1564-1642)
“Absolute Space, in its own nature, without regard to any thing external, remains always similar and immovable. Relative Space is some moveable dimension or measure of the absolute spaces; which our senses determine, by its position to bodies; and which is vulgarly taken for immovable space . And so instead of absolute places and motions, we use relative ones”
There exists absolute space, but we measure space only relative to other objects in space