Astronomers use redshirts to track the rotation of our galaxies, tease out the subtle tug of a distant plant on its parent star, and measure the expansion rate of universe.
The electric distance meter and extensometer are used to measure length between two points and tensile strength respectively.
Electronic distance measurement uses electromagnetic waves such as infrared light while extensometer place the object under stress.
<h3>What is Electronic distance measurement and extensometer?</h3>
Electronic distance measurement and extensometer are tools that can be used to Know the length between two points and tensile strength respectively using different techniques.
The extensometer usually places a sample under stress to determine the length of the material while Electronic distance measurement uses beam of infrared light.
Learn more about Electronic distance measurement at: brainly.com/question/777464
The different standard times are known as time zones. Time zones are useful because they can allow people to be active during the day and sleep during the night. If people spent hours with sunlight sleeping and worked in the dark, they would likely suffer health problems.
Big countries such as Australia and the United States have many time zones so that people can work and sleep in the time that is adjusted to the hours with sunlight in their specific location.
<span />
- Map scale refers to the ratio between distance on a map and the corresponding distance on the ground.
- So, the option that goes with it is c. Measure the distance between places.
Hope you could get an idea from here.
Doubt clarification - use comment section.