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- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/PHY_2030%3A_General_Physics_II/19%3A_Electric_Current_and_Resistance/19.3%3A_Resistance_and_ResistorsOhm’s Law states that current is proportional to voltage; circuits are ohmic if they obey the relation V=IR.
- https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/30%3A_Nuclear_Physics_and_Radioactivity/30.2%3A_RadioactivityDetectable amounts of radioactive material occurs naturally in soil, rocks, water, air, and vegetation.
- https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/19%3A_Electric_Current_and_Resistance/19.3%3A_Resistance_and_ResistorsOhm’s Law states that current is proportional to voltage; circuits are ohmic if they obey the relation V=IR.
- https://phys.libretexts.org/Courses/Kettering_University/Electricity_and_Magnetism_with_Applications_to_Amateur_Radio_and_Wireless_Technology/14%3A_Introduction_to_Semiconductor_Devices/14.02%3A_Band_Theory_of_SolidsThe energy levels of an electron in a crystal can be determined by solving Schrödinger’s equation for a periodic potential and by studying changes to the electron energy structure as atoms are pushed ...The energy levels of an electron in a crystal can be determined by solving Schrödinger’s equation for a periodic potential and by studying changes to the electron energy structure as atoms are pushed together from a distance. The energy structure of a crystal is characterized by continuous energy bands and energy gaps. The ability of a solid to conduct electricity relies on the energy structure of the solid
- https://phys.libretexts.org/Bookshelves/Electricity_and_Magnetism/Electromagnetics_and_Applications_(Staelin)/12%3A_Optical_Communications/12.04%3A_Optical_detectors%2C_multiplexers%2C_interferometers%2C_and_switchesThis page covers key photon detectors including phototubes and semiconductor photodiodes, with the latter preferred for efficiency in visible and infrared light. It explains optical communication syst...This page covers key photon detectors including phototubes and semiconductor photodiodes, with the latter preferred for efficiency in visible and infrared light. It explains optical communication systems utilizing wave-division multiplexing and details the workings of multiplexers, demultiplexers, and interferometers like Mach-Zehnder and Michelson.
- https://phys.libretexts.org/Bookshelves/University_Physics/University_Physics_(OpenStax)/University_Physics_III_-_Optics_and_Modern_Physics_(OpenStax)/09%3A_Condensed_Matter_Physics/9.06%3A_Band_Theory_of_SolidsThe energy levels of an electron in a crystal can be determined by solving Schrödinger’s equation for a periodic potential and by studying changes to the electron energy structure as atoms are pushed ...The energy levels of an electron in a crystal can be determined by solving Schrödinger’s equation for a periodic potential and by studying changes to the electron energy structure as atoms are pushed together from a distance. The energy structure of a crystal is characterized by continuous energy bands and energy gaps. The ability of a solid to conduct electricity relies on the energy structure of the solid
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/PHY_2040%3A_General_Physics_III/10%3A_Nuclear_Physics_and_Radioactivity/10.2%3A_RadioactivityDetectable amounts of radioactive material occurs naturally in soil, rocks, water, air, and vegetation.
- https://phys.libretexts.org/Bookshelves/Modern_Physics/Spiral_Modern_Physics_(D'Alessandris)/8%3A_Misc_-_Semiconductors_and_Cosmology/8.1%3A_Modeling_Semiconductors_(Project)The size of the band gap between the highest filled energy band (the valence band) and the lowest unfilled energy band (the conduction band) is of crucial importance in determining the solids properti...The size of the band gap between the highest filled energy band (the valence band) and the lowest unfilled energy band (the conduction band) is of crucial importance in determining the solids properties. The total charge within the gaussian rectangle is the product of the doping charge density (ρ), which is negative, and the volume of the rectangle within the depletion zone (Ax).
