Problem: Theoretical physics is a branch of physics that employs mathematical models and abstractions of physical objects and systems to rationalize, explain and predict natural phenomena. This is in contrast to experimental physics, which uses experimental tools to probe these phenomena.

The advancement of science generally depends on the interplay between experimental studies and theory. In some cases, theoretical physics adheres to standards of mathematical rigor while giving little weight to experiments and observations. For example, while developing special relativity, Albert Einstein was concerned with the Lorentz transformation which left Maxwell's equations invariant, but was apparently uninterested in the MichelsonMorley experiment on Earth's drift through a luminiferous ether. Conversely, Einstein was awarded the Nobel Prize for explaining the photoelectric effect, previously an experimental result lacking a theoretical formulation.

A physical theory is a model of physical events. It is judged by the extent to which its predictions agree with empirical observations. The quality of a physical theory is also judged on its ability to make new predictions which can be verified by new observations. A physical theory differs from a mathematical theorem in that while both are based on some form of axioms, judgment of mathematical applicability is not based on agreement with any experimental results. A physical theory similarly differs from a mathematical theory, in the sense that the word "theory" has a different meaning in mathematical terms. A physical theory involves one or more relationships between various measurable quantities. Archimedes realized that a ship floats by displacing its mass of water, Pythagoras understood the relation between the length of a vibrating string and the musical tone it produces. Other examples include entropy as a measure of the uncertainty regarding the positions and motions of unseen particles and the quantum mechanical idea that (action and) energy are not continuously variable.
1. What is theoretical physics used to explain?
2. Can it also predict things?
3. What does it employ?
4. What part of physics is it different from?
5. What did Einstein develop?
6. What did he win for this?
7. What does a physical theory involve?
8. What keeps a boat above water?
9. Who figured this out?
10. Did he also study musical tone?
Answer: 1. natural phenomena.
2. yes
3. matematical models
4. This is in contrast to experimental physics, which uses experimental tools to probe these phenomena.
5. an explanation of the photoelectric effect
6. the Nobel prize
7. it's a model of physical events/
8. it displaces its mass of water
9. Archimedes
10. Pythagoras understood the relation between thno

Problem: CHAPTER III--SOAMES PREPARES TO TAKE STEPS

When Soames entered his sister's little Louis Quinze drawing-room, with its small balcony, always flowered with hanging geraniums in the summer, and now with pots of Lilium Auratum, he was struck by the immutability of human affairs. It looked just the same as on his first visit to the newly married Darties twenty-one years ago. He had chosen the furniture himself, and so completely that no subsequent purchase had ever been able to change the room's atmosphere. Yes, he had founded his sister well, and she had wanted it. Indeed, it said a great deal for Winifred that after all this time with Dartie she remained well-founded. From the first Soames had nosed out Dartie's nature from underneath the plausibility, savoir faire, and good looks which had dazzled Winifred, her mother, and even James, to the extent of permitting the fellow to marry his daughter without bringing anything but shares of no value into settlement.

Winifred, whom he noticed next to the furniture, was sitting at her Buhl bureau with a letter in her hand. She rose and came towards him. Tall as himself, strong in the cheekbones, well tailored, something in her face disturbed Soames. She crumpled the letter in her hand, but seemed to change her mind and held it out to him. He was her lawyer as well as her brother.

Soames read, on Iseeum Club paper, these words:

'You will not get chance to insult in my own again. I am leaving country to-morrow. It's played out. I'm tired of being insulted by you. You've brought on yourself. No self-respecting man can stand it. I shall not ask you for anything again. Good-bye. I took the photograph of the two girls. Give them my love. I don't care what your family say. It's all their doing. I'm going to live new life. 'M.D.'
1. Who is Soames' sibling?
2. Who did she marry/
3. Was he nice looking?
4. who was impressed by it?
5. Anyone else
6. Who?
7. who is James?
8. Was Dartie poor?
9. What did Winifred decorate her balcony with?
10. What kind are out there now?
11. What about in July?
12. Where is Winifred when her brother finds her?
13. Is she holding something?
14. What?
15. What is it written on?
16. Who is her attorney?
17. How does their height compare?
18. How long has she been married?
19. Does Soames think she's happy?
20. Is she?
Answer:
1. Louis Quinze
2. Dartie
3. yes
4. Winifred
5. yes
6. her mother and James
7. her father
8. yes
9. flowers
10. Lilium Auratum
11. hanging geraniums
12. sitting at her Buhl bureau
13. yes
14. a letter
15. Iseeum Club paper
16. her brother
17. the same
18. twenty-one years
19. yes
20. no