Task 7. Answer the questions about the text «Quantum Mechanics»

Task 6. Decide if the statements are true, false or not mentioned in the text.

Task 5. Change the words in bold with the words of the similar meaning given in the box.

Task 4. Match the words with the definitions.

Task 3. Read the text «Quantum Mechanics» again and find the English equivalents for the following words.

Взаимосвязь; кинетический (вращательный) момент; частица; соответственно; амплитуда положения; многозначительно; выводить, устанавливать происхождение; квантовая физика; разветвляться; соавтор; корпускулярная теория света; постоянная Планка; переоценивать; в терминах.

1. depart from a. to tie a number of things together, to unite people

2. advance b. to take something offered, agree with something

3. accept c. to become known, to come out of something

4. bind d. not to use usual way of doing something, refuse

5. speculation from something

6. emerge e. progress in science, technology, human knowledge

7. duality f. separate

8. discrete g. consideration or discussion why something has happened

h. the fact that something has two aspects or parts

provides accepted developed

deals with average

emerged branched out

1. Quantum mechanics (QM) is concerned with physical phenomena at microscopic scales.

2. Quantum mechanics gives the mathematical description of the dual particle-like and wave-like behaviour.

3. The earliest version of QM appeared in the first decade of the 20^th century.

4. QM was advanced by Niels Bohr.

5. The advanced versions of QM were adopted by most of scientists of the 20^th century.

6. Later the theory of QM expanded into every aspect of physics other discipline.

7. Calculate the mean distance travelled.

1. Quantum mechanics is also known as quantum physics, or quantum theory.

2. At the same time, the atomic theory and the corpuscular theory of light first came not to be widely accepted as the scientific fact.

3. However there were concepts in the new quantum theory which gave major worries to many leading physicists.

4. Chaotic systems have good quantum numbers, and quantum chaos studies the relationship between classical and quantum descriptions in these systems.

5. Quantum mechanics has since branched out into almost every aspect of the 20th century physics and other disciplines, such as quantum chemistry, quantum electronics, quantum optics, and quantum information science.

1. What is QM? Name the other terms of QM.

2. What does the name quantum mechanics derive from?

3. What provides the information about the probability amplitude of position, momentum, and other physical properties of a particle?

4. When were the earliest versions of quantum mechanics formulated?

5. Who reformulated the quantum theory in the mid-1920s?

6. Did QM branch out into almost aspect of the 20th century physics and other disciplines?

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