10 Questions
What were the subcategories that Sir Isaac Newton used to break down his subject?
Motion, forces, and other phenomena
In what manner did Sir Isaac Newton conduct his work?
Mathematically
How would you describe the directions mentioned in the text?
Perpendicular
How would you communicate your position to a fellow scientist according to the text?
With a pair of numbers indicating distances in different directions
What does a third number in a spatial location represent?
The distance from the starting point
What is traditionally given the special set of three numbers (0, 0, 0)?
The origin of the spatial system
What was initially set to be one ten-millionth of the distance from the Equator to the North Pole?
The meter
What was used as the standard object to refine the definition of a meter in 1960?
A specific orange light emitted by krypton
What does the final refinement to the meter in 1983 define it as?
$1/299,792,458$ of a second for light to travel any color
What does the text suggest is Earth's reference point for setting up physical measures like a meter?
The Equator
Study Notes
Breaking Down the Subject
- Sir Isaac Newton categorized his subject into three subcategories: Length, Time, and Mass.
Conducting Work
- Newton conducted his work in a systematic and precise manner.
Directions
- Directions mentioned in the text are given as three-dimensional spatial locations.
- The three dimensions are described as Left and Right, Forward and Backward, and Up and Down.
Communicating Position
- A scientist would communicate their position to a fellow scientist using three numbers, specifying their location in three-dimensional space.
Spatial Locations
- A third number in a spatial location represents the vertical or up/down direction.
Origin of Coordinates
- The origin of coordinates is traditionally given the special set of three numbers (0, 0, 0), representing the reference point.
Definition of a Meter
- Initially, a meter was set to be one ten-millionth of the distance from the Equator to the North Pole.
- In 1960, the standard object used to refine the definition of a meter was the wavelength of light emitted by the krypton-86 atom.
- In 1983, the final refinement to the meter defined it as the distance traveled by light in a vacuum in 1/299,792,458 of a second.
Earth's Reference Point
- The text suggests that the Earth's center is used as the reference point for setting up physical measures like a meter.
Explore the foundational concepts of Newton's laws of motion, including the breakdown of motion, forces, and extending the understanding of forces to other phenomena in a mathematical manner. This quiz provides an overview of the basic tasks and tools used in conceptual and mathematical understanding of motion.
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