MGMT 1050 Lecture Notes - Lecture 11: Richmond Hill, Ontario, Hydrogen Atom, Christian Metal
20 Jul 2016
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Make sure that you understand *why* radio waves have each of these advantages. Advantages of radio waves: can be detected on earth both night and day (not overwhelmed by sunlight) as well as through clouds. Unaffected by the amount of light in the sky: easily detected with ground-level telescopes (they completely penetrate earth"s atmosphere) Radiowaves are long waves, which easily pass through the atmosphere. Therefore, radio dishes don"t need to be placed at high-altitudes (can pass through the entire atmosphere: reflect off most metallic surfaces, not absorbed by interstellar dust. Radio light from distant surfaces can make it through the dust of the milky way (because they are long waves: strongly emitted by distant (young) galaxies, allowing us to observe galaxies as they appeared in the distant past. Reber detected radio emission from two discrete sources : describe the process that is producing the 21-cm radio emission in our galaxy.
