PHYS 1010 Lecture Notes - Lecture 2: Eaves, Wave Equation, Diffraction
25 Aug 2016
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Andromeda galaxy (freshest object that you can see with the naked eye) Inaccessible to us/ spacecraft; new horizon v- 60000 km/h. 4500 billion years to reach 2. 5 yr to get info back. Billions of other galaxies even farther away. Use laws of physics learned here on earth to interpret the light (electromagnetic. Radiation: a way in which energy is transmitted from one point to another in space without need for any psychical connection between those 2 points. Electromagnetic: refers to energy (light) traveling in the form of oscillating electric and magnetic fields (wave) that is given off by electrons inside atoms. As technology and experimental techniques developed in the mid 1800, scientist began to recognize all types of em radiation could travel through space in the form of waves. A disturbance in which energy is transferred from place to place without physical movement of material from one place to another.
