Blackbody radiation: a spectroscopic study John Greavu Partner: Nicholas Souhleris TA: Yilikal Ayino (Friday‚ Section 006) April 18‚ 2014 I. PRELAB A blackbody is a body that absorbs all electromagnetic radiation and emits a continuous spectrum‚ such as heated cavern with just a small opening to the outside world. In 1900‚ German physicist Max Planck derived an expression for this blackbody spectrum. Knowing that oscillators emit radiation‚ he assumed that oscillators within the cavern were
Premium Light Black body Electromagnetic radiation
Antennas & Propagation CS 6710 Spring 2010 Rajmohan Rajaraman Introduction An antenna is an electrical conductor or system of conductors o Transmission - radiates electromagnetic energy into space o Reception - collects electromagnetic energy from space In two-way communication‚ the same antenna can be used for transmission and reception Radiation Patterns Radiation pattern o Graphical representation of radiation properties of an antenna o Depicted as two-dimensional
Premium Electromagnetic radiation Rayleigh fading Fading
Radiation All microscopic objects – fires‚ cubes‚ people‚ and stars – emit radiation at all times. They radiate because the microscopic charged particles in them are in constant random motion‚ and whenever charges change their state of motion‚ electromagnetic radiation is emitted. The temperature of an object is a direct measure of the amount of microscopic motion within it. The hotter the object – that is‚ the higher its temperature – the faster its constituent particles move and the more energy
Free Electromagnetic radiation Light Electron
percent error were able to be extrapolated. Based on the literature values‚ the cereal box spectrometer proved its value as a decently accurate spectrometer. Introduction: Every element and subsequent atom associated emits light; also know as electromagnetic radiation‚ when in an excited state. Analyzing this emitted light can give insight to the makeup and characteristics of them. The light given off by an energetically excited atom is not a continuous distribution of all possible wavelengths‚ but
Premium Electromagnetic radiation Light Atom
and chromatic aberration in lenses. In opaque media‚ the refractive index is a complex number: while the real part describes refraction‚ the imaginary part accounts for absorption. The concept of refractive index is widely used within the full electromagnetic spectrum‚ from x-rays to radio waves. It can also be used with wave phenomena other than light (e.g.‚ sound). In this case the speed of sound is used instead of that of light and a reference medium other than vacuum must be chosen.[2] Contents [hide]
Premium Refractive index Refraction Electromagnetic radiation
EXECUTIVE SUMMARY This report is intended for the recruitment and selection processes of Healthcare united and the development of a new and improved recruitment and selection policy that Healthcare United can adopt in order to improve the recruitment and selection process of the company. This report identifies and analyses the 2000 Healthcare United recruitment and selection guidelines against the current 2010 Healthcare United recruitment policy and relevant legislation. Identify and discuss key
Premium Recruitment Management Human resource management
Electromagnetic energy‚ in the form of light‚ travels in wavelengths and is measured in nanometres (nm). Pigments within matter‚ such as plants‚ absorb varying wavelengths of light. The absorption spectrum can be defined as a graphical representation of a pigment’s ability to absorb light against varying wavelengths (nm). The pigments light absorbing ability is measured using a spectrophotometer. An action spectrum can be defined as the graphical representation of the rate of photosynthesis against
Premium Photosynthesis Electromagnetic radiation Light
to hubs and switches. Core - the central part of an optical fiber that provides the transmission region for an optical signal. Cladding - A layer of optical glass surrounding the light-carrying core of an optical fiber. Radio waves - An electromagnetic wave used for long distance communication. Wireless WAN - A wireless wide area network‚ is a form of wireless network its a larger version of Wireless LAN. Wireless LAN - A wireless local area network links two or more devices using a wireless
Premium Computer network Wi-Fi Electromagnetic radiation
techniques which differ widely in their mode of application and information they reveal. As a useful working definition‚ spectroscopy is a study of interaction of electromagnetic radiation with matter in the experiment it means it’s the usage of ultra-light to measure the absorbance of the copper sulpate. The regions of the electromagnetic spectrum immediately adjacent to the high- and low- energy extremes of the visible region are known as the ultraviolet (UV) and infrared (IR) regions respectively
Premium Electromagnetic radiation Spectroscopy Electromagnetic spectrum
information Ex. Radio wave When the motion of the particles is perpendicular to the motion of the wave‚ it is called a traverse wave Pointing down Acceleration down Wave -> We see the motion of the medium Soundwaves -> air Lightwaves = electromagnetic waves Stadium waves -> people Water waves -> water Light waves -> no medium Pointing up Acceleration up Without tension‚ there can be no traverse waves in a medium. -> Do not occur inside liquids and gases -> can occur on surface of
Free Electromagnetic radiation Light Wavelength