Why is a new redefinition of the second in the works? Explain how optical atomic clocks work and why they can measure time more precisely.Ħ. What was the problem with the pre-1967 method of basing the second on the rotation of the Earth, according to the article?ĥ. Which method from the past was most fascinating, surprising or memorable to you? Were any of these methods similar to the ones you proposed in the warm-up activity?Ĥ. The article provides a rich history of how humans have told time. What is the International Bureau of Weights and Measures (known by its French acronym, B.I.P.M.)? What are the seven base units it regulates and why? Why is the organization constantly refining the standard units?ģ. And measurement would be pointless if we weren’t all using the same units.” Do you agree? Explain the meaning of these opening lines and what evidence from your own life and studies might support its claims.Ģ. The article begins: “Modern civilization, it is said, would be impossible without measurement. Read the featured article, then answer the following questions:ġ. How could you explain the concept of a second in simple language a third grader would understand?įinally, share your definition with a partner or the class: Whose is most accurate and why? Questions for Writing and Discussion Completing the Recommission Nuclear Reactor project will also un-pillage it. Seastead: Cannot be placed adjacent to another Seastead. Panama Canal wonder now gives +10 Gold to its city.
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Take some time to consider what a second really is. Civ 6 world builder ai teams mod Civ 6 world builder ai teams update Mahabodhi Temple and Statue of Liberty now award Diplomatic victory points. ( You might wonder what exactly is time, but let’s save that question for another day!) Just how long is a second? How would you define it? More important, how would you get two people to agree on the length of a second if neither of you had a clock, stopwatch or timekeeping device? Part 2: What is a second, actually? Write a definition to explain it. How are they similar? How are they different? Would you want to live in a world without clocks? What would be the advantages and disadvantages of this imagined world? (Keep in mind: The items on your list can be big or small, personal or global.)Īfterward, find a partner and share your lists. Then, make a list of 10 ways things would be different without clocks. Take a few minutes to picture that world. For example, how would you know when to get up in the morning? What time would third period be? When should the ball drop on New Year’s Eve?
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