hole-conduction silicon
61Capacitor — This article is about the electronic component. For the physical phenomenon, see capacitance. For an overview of various kinds of capacitors, see types of capacitor. Capacitor Modern capacitors, by a cm ruler Type Passive …
62High-temperature superconductivity — Unsolved problems in physics What causes superconductivity at temperatures above 50 kelvin? High temperature superconductors (abbreviated high Tc or HTS) are materials that have a superconducting transition temperature (Tc) above 30 K… …
63Spitzer Space Telescope — The Spitzer Space Telescope prior to launch General information NSSDC ID 2003 038A …
64physical science, principles of — Introduction the procedures and concepts employed by those who study the inorganic world. physical science, like all the natural sciences, is concerned with describing and relating to one another those experiences of the surrounding… …
65Metamaterial cloaking — Electromagnetism Electricity · …
66Shockley , William Bradford — (1910–1989) British–American physicist Shockley, born the son of a mining engineer in London, was educated at the California Institute of Technology and at Harvard, where he obtained his PhD in 1936. He started work at the Bell Telephone… …
67X-ray astronomy — X rays start at 0.008 nm and extend across the electromagnetic spectrum to 8 nm, over which the Earth s atmosphere is opaque. X ray astronomy is an observational branch of astronomy which deals with the study of X ray observation and detection… …
68Plate tectonics — The tectonic plates of the world were mapped in the second half of the 20th century …
69Nanopore sequencing — is a method under development since 1995 [1][2] for determining the order in which nucleotides occur on a strand of DNA. A nanopore is simply a small hole, of the order of 1 nanometer in internal diameter. Certain transmembrane cellular proteins… …
70Carbon nanotubes in photovoltaics — Organic photovoltaic devices (OPVs) are fabricated from thin films of organic semiconductors, such as polymers and small molecule compounds, and are typically on the order of 100 nm thick. Because polymer based OPVs can be made using a coating… …
