The Significance of Time Measurement in Human History
What is the central idea of this text?
A. Fire-clocks are similar to modern alarm-clocks.
B. Humans can tell time by looking at the stars.
C. Humans have always placed a value on measuring time.
D. Sundials are an accurate way to tell time.
How can we identify the central idea of a text?
A. Reading all the text.
B. Identifying the topic addressed.
C. Identifying the message conveyed by the text.
Correct answer:
C. Humans have always placed a value on measuring time.
B. Identifying the topic addressed.
The central idea of the text is that humans have always placed a value on measuring time. The author emphasizes the importance of time measurement, stating that it is essentially the measurement of life itself. This highlights the crucial role of tracking time in various aspects of human lives.
The text provides an example of how a minor error in a general's watch led to the downfall of Napoleon at Waterloo, underscoring the significant consequences of inaccurate time measurement. It also explores how larger periods of time are measured by observing the motion of heavenly bodies, while smaller units of time present a challenge.
To address the need for measuring smaller units of time, ancient civilizations used innovative methods such as fire-clocks, which relied on the burning of materials to track the passage of time. This demonstrates human ingenuity and resourcefulness in finding ways to measure time throughout history.
In conclusion, the central idea of the text highlights the value humans have always placed on measuring time, showcasing the importance of accurate time measurement for individuals and societies alike.