18. Modern physics Flashcards
1
Q
What are the 2 parts of the theory of relativity?
A
General and special relativity.
2
Q
What are the 2 main points behind Einstein’s theory of special relativity?
A
- The laws of physics are the same for all observers in uniform motion relative to one another. 2. The speed of light in a vacuum is the same for all observers regardless of their motion.
3
Q
What is gravity in special relativity?
A
A distortion of space-time.
4
Q
Time appears to be moving what in a moving frame relative to an observer than a rest frame?
A
Slower.
5
Q
What does quantum mechanics describe?
A
The motion and interaction of subatomic particles.
6
Q
What are the 3 main areas of quantum mechanics?
A
- Wave/particle duality. 2. Atomic energy. 3. Mass-energy equivalence.
7
Q
What does atomic physics study?
A
Structure of atoms, energy states, and interactions with field particles.
8
Q
What are the main areas of atomic physics?
A
Nuclear decay and half lives, quarks, the 4 fundamental forces, and models of the atom called the Rutherford and Bohr models.
