ASTA01H3 Chapter : Radiation

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3. 1 i n fo r ma t ion f rom the sk ies. we use the laws of physics as we know them here on earth to interpret the electromagnetic radiation emitted by those objects. L igh t and r a d ia t ion. Radiation: any way in which energy transmitted through space from one point to another without the need for any physical connection b/w the two locations. The term electromagnetic just means that the energy carried is in the form of rapidly fluctuating electric and magnetic fields. Electromagnetic theory provides us with answers to questions regarding masses, temperature and proportion of galaxies and planets in the universe. Visible light our human eyes happen to be sensitive. is the particular type of electromagnetic radiation to which. Modern instruments can detect many forms of invisible electromagnetic radiation which goes completely unnoticed by our eyes such as radio, infrared and ultraviolet waves, also x rays and gamma rays www. notesolution. com.