What types of radiation is given off from the electromagnetic spectrum?
The spectrum of electromagnetic waves encompasses the full range of frequencies, from radio waves to gamma rays. A nice introduction of the electromagnetic spectrum is available at: http://imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html http://www.lbl.gov/MicroWorlds/ALSTool/EMSpec/EMSpec2.html http://imagers.gsfc.nasa.gov/ems/ems.html Dr. Bernhard Fleck SOHO Project Scientist European Space Agency Research and Scientific Support Department Magnetism QUESTION: Who was the first to discover magnetism and how did they first experiment it? ANSWER: The discovery was lost to history but was probably in ancient CHina around 2000 BC or earlier, when the use of a lodestone-like substance was mentioned as a navigation aid. Magnetism was studied several times, but a detailed description had to wait until 1600 when Gilbert – a court physician -wrote his book ‘De Magnete’ Dr. Sten Odenwald Solar Astronomer NASA Goddard Space Flight Center QUESTION: Does magnetism in the sun have any dir
