A full description of the different kinds of light and their implications on technology in society begins this unit. This is then extended to the various kinds of telescopes that are used to observe the night skies, including major observatories and space based telescopes.

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Unit 3 - Lesson 1: The EM Spectrum

by Athabasca University

This lesson is part of the Athabasca University Astronomy 230: Northern Lights, Northern Skies course. In this lesson, you will learn how to discuss the nature of light, how to describe the different types of light and their uses, and how to describe the relationship between the speed of light and distances.
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This lesson is part of the Athabasca University Astronomy 230: Northern Lights, Northern Skies course. In this lesson, you will learn how to distinguish between reflection and refraction, and how to describe examples of reflection and refraction in everyday life.
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This lesson is part of the Athabasca University Astronomy 230: Northern Lights, Northern Skies course. In this lesson, you will learn how to distinguish between reflecting and refracting telescopes, and how to discuss advantages of building an observatory on top of a mountain.
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This lesson is part of the Athabasca University Astronomy 230: Northern Lights, Northern Skies course. In this lesson, you will learn how to distinguish between radio and optical telescopes in design, and how to compare the advantages of using an optical telescope to the advantages of using a radio telescope.
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This lesson is part of the Athabasca University Astronomy 230: Northern Lights, Northern Skies course. In this lesson, you will learn how to compare the Hubble Space Telescope to other space telescopes in terms of function, and how to describe the advantages to having a telescope in space instead of on the surface of the Earth.
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