ASTR 1345 1st Edition Lecture 2 Outline of Last Lecture I. Scientific MethodII. Scientific TheoryOutline of Current Lecture I. RadiationII. Age of the UniverseIII. PhysicsCurrent Lecturel.Radiation is electromagnetic waves and the difference between the waves is the frequency. Least harmful to most harmful: Radio Waves-> Microwave-> Infrared->Visible Light-> Ultraviolet-> X-Ray-> Gamma Ray.ll.The age of the universe is about 14 billion years old. The age of the solar system is about 4.5 billion years old. Primates on Earth go back 10 million years, humans about 100,000 years.lll.Physics is the study of matter, energy, motion, space and time, based on experimental observations. It is based on theories tested by quantitative observations. Quantitative measurements are subject to experimental error, so “facts” may change as precision of measurement is increased.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a
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