PPT-Electronic Spectra: Ultraviolet and Visible Spectroscopy

1411 Ultraviolet and visible light give rise to electronic excitations Spectroscopy of organic molecules is possible because the absorption of radiation is restricted to quanta having energies corresponding to specific molecular excitations. 2010-2011. Third Year. Dr Fadhl Alakwa. www.Fadhl-alakwa.weebly.com. UST-Yemen. Biomedical Department. Light Transmission Dependence on Concentration. Beer’s Law. The Beer-Bouguer-Lambert Law. molecular . Screens. ‘How it works?’. Cathode Ray Tubes. Output devices. Cathode Ray Tubes. Television screens used to use a technology called, cathode ray tubes (CRT). An electron gun emitted electrons inside a glass tube onto phosphor atoms at the end of the glass tube, causing the phosphor atoms to light up. The electron gun scanned the screen many times per second, producing an image. . CHE 6416. Michael Evans. 1. How does Microwave relate to other spectroscopies. Different types of motion. Translational. Vibrational. Rotational.. 2. What is Microwave Spectroscopy?. Microwave stimulates Rotational translations. 1.2-m UK Schmidt Telescope. Author: . Primož Cigler. Mentor: . prof. dr. Tomaž Zwitter. Seminar Leader: . prof. dr. Peter Križan. What I will be talking today about?. Basics about spectroscopy and some theoretical background. Professor. Dr. HANS SCHUESSLER . By. . Ansam Jameel Talib. Molecular Physics Course. . . . History of Raman Scattering. 1923. . – Inelastic light . scattering . predicted by A. . Introduction . to Spectroscopy. Spectroscopy involves an interaction between matter and light . (EMR). Light can be thought of as waves of energy or packets (particles) of energy called photons. Properties of light waves include wavelength and frequency. Spectroscopy. 441 . Chem. CH-2. 1. The Ultraviolet . and Visible Spectrum. Near UV. Visible. 200 nm. 400 nm. 800 nm. Wavelength (nm). 10 nm. Far UV. Higher frequency. Lower frequency. 2. The absorption of . Ultraviolet (UV) light falls in the range of the EM spectrum between visible light and X-rays. UV . light, which comes from the sun, is invisible to the human eye. .. It . makes black-light posters glow, and is responsible for summer tans — and sunburns. Next be sure that you have at least 4 colored pencils to work with today at your table.. Electromagnetic Waves . Spectrum Foldable. Please get your notebook and add this title to the next available page. Spectroscopy . . Is the interaction between matter and electromagnetic radiation (light). . Spectroscopy is commonly used in chemistry to detect, identify, and quantify information about different atoms and molecules. Mark . Schnittker . 2013, Aug-23. schnittker@yahoo.com. 408-368-1064. . Some common measurement techniques. . . Atomic techniques (usually inorganic). X-ray spectroscopy. Optical absorption. Plasma discharge. 47 Studies in Characteriza�on of Intracranial Space hccupying biharika trasad 1 , Vinaya toornima 2 , Merwyn Cernandes 2 3 4 1 Senior Resident, Department of Radiodiagnosis, All India Ins& radiaton. , through different types of filters. . UV & . Sunblock. Measuring and comparing the level of ultraviolet radiation, through different types of filters.. Objective. The purpose of this activity is to study the level of ultraviolet radiation resulting from the intervention of a sunlight beam through different types of filters, creating a hypothesis and proceeding to test it using the . Dr. Indranil . Chakraborty. Department of Chemistry. Kharagpur. College. UV-Vis spec-1. 29-03-2020. 1. WHAT IS COLOUR. ?. Colour is a sensation which occurs when light enters the eye and focuses on the retina at the back of the eye. The light actually initiates a photochemical reaction in the nerve cells attached to the retina. These transmit impulses to the brain and stimulate our sense of colour.