visible light rays
81History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… …
82Photoelectric effect — The photoelectric effect is a quantum electronic phenomenon in which electrons are emitted from matter after the absorption of energy from electromagnetic radiation such as x rays or visible light.cite book | title = Physics for Scientists… …
83Dispersion staining — Contents 1 Dispersion Staining 1.1 Becke Line Dispersion Staining 1.2 Oblique Illumination Dispersion Staining 1.3 Darkfield Illumination Dispersion Staining …
84telecommunications media — Introduction equipment and systems metal wire, terrestrial and satellite radio, and optical fibre employed in the transmission of electromagnetic signals. Transmission media and the problem of signal degradation Every… …
85Diffraction — Computer generated intensity pattern formed on a screen by diffraction from a square aperture …
86gravitation — gravitational, adj. gravitationally, adv. /grav i tay sheuhn/, n. 1. Physics. a. the force of attraction between any two masses. Cf. law of gravitation. b. an act or process caused by this force. 2. a sinking or falling …
87protein — proteinaceous /proh tee nay sheuhs, tee i nay /, proteinic, proteinous, adj. /proh teen, tee in/, n. 1. Biochem. any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the… …
88Crab Nebula — Crab Nebula …
89Medical radiography — Diagnostics ICD 10 PCS B?0, B?1, B?2 ICD 9 CM 87 …
90Phase contrast microscopy — Phase contrast image of a cheek epithelial cell Phase contrast microscopy is an optical microscopy illumination technique of great importance to biologists in which small (invisible to the human eye) phase shifts in the light passing through a… …
