Laser — Questions and answers

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Who unveiled the world's first working laser in 1960?

Choices

  1. Albert Einstein
  2. Theodore Maiman ✓
  3. Dr. Evelyn Reed
  4. Arthur Schawlow

Answer: Theodore Maiman

From page 1

What important idea for the laser did Albert Einstein theorize many years before it was built?

Choices

  1. How to build a powerful flash lamp.
  2. The concept of 'population inversion'.
  3. 'Stimulated emission' of light. ✓
  4. The crystalline structure of ruby.

Answer: 'Stimulated emission' of light.

From page 3

What special material did Theodore Maiman choose for his laser, even though others doubted it?

Choices

  1. Different types of gases
  2. Various liquids
  3. Synthetic ruby ✓
  4. A conventional mercury lamp

Answer: Synthetic ruby

From page 4

What challenging state did Maiman need to create in the ruby atoms for the laser to work?

Choices

  1. A smoking, failed flash lamp
  2. Overheating the system
  3. Population inversion ✓
  4. Insufficient energy input

Answer: Population inversion

From page 5

When was the birth of the laser demonstrated by Maiman?

Choices

  1. In 1954
  2. In 1960 ✓
  3. In 1970
  4. In 1980

Answer: In 1960

From page 8

Which of these is NOT mentioned as something lasers help with in modern life?

Choices

  1. Scanning groceries at the store.
  2. Sending information across oceans.
  3. Cleaning windows in tall buildings. ✓
  4. Making entertainment better.

Answer: Cleaning windows in tall buildings.

From page 10