laser emits at wavelength λ
61Thermodynamic temperature — is the absolute measure of temperature and is one of the principal parameters of thermodynamics. Thermodynamic temperature is an “absolute” scale because it is the measure of the fundamental property underlying temperature: its null or zero point …
62Fluorescence — Fluorescent minerals emit visible light when exposed to ultraviolet light Fluorescence is the emission of light by a substance that has absorbed light or other electromagnetic radiation of a different wavelength.[1] It is a form of luminescence.… …
63Proximity fuze — A proximity fuze (also called a VT fuze, for variable time ) is a fuze that is designed to detonate an explosive device automatically when the distance to target becomes smaller than a predetermined value or when the target passes through a given …
64Mass–energy equivalence — E=MC2 redirects here. For other uses, see E=MC2 (disambiguation). 4 meter tall sculpture of Einstein s 1905 E = mc2 formula at the 2006 Walk of Ideas, Berlin, Germany In physics, mass–energy equivalence is the concept that the …
65Spectrophotometry — Spectrophotometer In chemistry, spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength.[1] It is more specific than the general term electromagnetic spectroscopy in …
66LED Incapacitator — DHS newsletterThe LED Incapacitator (Light Emitting Diode) is a powerful weapon designed like a flashlight. It emits an extremely bright, rapid, and well focused blue wave of differently colored random pulses. Before the human eyes can focus in… …
67Atomic emission spectroscopy — (AES) is a method of chemical analysis that uses the intensity of light emitted from a flame, plasma, arc, or spark at a particular wavelength to determine the quantity of an element in a sample. The wavelength of the atomic spectral line gives… …
68Synthetic aperture radar — (SAR) is a form of radar in which the highly directional (and thus very large) rotating antenna used by conventional radar is replaced with many low directivity small stationary antenna positions scattered over some area near or around the target …
69Measurement and Signature Intelligence — Measurement and Signature Intelligence, or MASINT, refers to intelligence gathering activities that bring together disparate elements that do not fit within the definitions of the major disciplines mentioned above. As a means of collecting… …
70Zinc selenide — Chembox new Name = Zinc selenide ImageFile = Zinc selenide unit cell 3D balls.png ImageName = Zinc selenide OtherNames = zinc(II) selenide Section1 = Chembox Identifiers CASNo = 1315 09 9 Section2 = Chembox Properties Formula = ZnSe MolarMass =… …
