light visibility. This means that everywhere where LEDs are used‚ lighting bulbs can bring not only the light but wireless connection at the same time. With increasing demand for wireless data‚ lack of radio spectrum and issues with hazardous electromagnetic pollution‚ Li-Fi appears as a new greener‚ healthier and cheaper alternative to Wi-Fi. Moreover Li-Fi makes possible to have a wireless Internet in specific environments (hospitals‚ airplanes etc.) where Wi-Fi is not allowed due to interferences
Premium Infrared Light Lighting
References: ring monopole antenna with double meander lines for 2.4/5ghz dualband operation”‚ Progress In Electromagnetics Research‚ PIER 72‚187– 194‚ 2007.
Premium Printed circuit board Radio Wireless
Title: Spectrophotometric analysis of a two-component mixture Aim: i. To prepare working standards of dichromate and permanganate ii. To measure the absorbance of the prepared working standards of dichromate and permanganate using a spectrophototometer iii. To determine the concentrations of permanganate in a mixture of unknown. Abstract: Working standards of dichromate and permanganate were prepared and absorbance for each found. This was done in order to plot
Premium Light Concentration Potassium permanganate
integer positive quantum number‚ h is Planck’s constant‚ m is the mass of the particle and L is the length of the box. If we assume that the most intense band in the experimentally observed spectrum can be interpreted as absorption of electromagnetic radiation by an electron as it is promoted from the HOMO to the LUMO‚ we can derive the following expression for the energy absorption E. E =h2 [2ni+ 1]/ (8mL²) (2) the absorption
Premium Absorption spectroscopy Electromagnetic radiation Photon
__________________________________________ Mission We achieve customer satisfaction through service excellence and operational responsiveness. To provide network access and telecommunication services. To advance the quality of life by delivering the best solution to the communications based needs of our subscribing publics. SID is a customer-motivated organization; always striving to deliver innovative solution to extend the boundaries of communication at the sea‚ on land and in the air. SID’s
Premium Microwave Radio Electromagnetic radiation
A NEW REVOLUTIONARY SYSTEM TO DETECT HUMANBEINGS BURIED UNDER EARTHQUAKE RUBBLE USING MICROPROCESSOR OR MICRO COTROLLER [pic] [pic] “Thousands of persons killed as a cause of earthquake”. The above words aren’t the headlines of the newspaper but daily news everyone come across whenever we go through a newspaper or watching over a TV news. A person’s life is precious and meaningful to his loved ones. We‚ as responsible Engineers felt a part of society to bring
Premium Electromagnetic radiation Microwave Electromagnetic spectrum
CHAPTER 5: LIGHT In each of the following sentences‚ fill in the bracket the appropriate word or words given below. solid‚ liquid‚ gas‚ vacuum‚ electromagnetic wave‚ energy 1. Light is a form of ( ). 2. It travels in the form of ( ) 3. In can travel through ( ) 4. It travels fastest in the medium of ( ) 5. Light of different colours
Premium Light Electromagnetic radiation Book of Optics
ELECTRONICS CAREER www.ecatn.blogspot.com 9. The Q-factor of a parallel resonance circuit consisting of an inductance of value 1mH‚ capacitance of value 10-5F and a resistance of 100 ohms is (A) 1 (B)10 (C) π 20 (D) 100 10. In a travelling electromagnetic wave‚ E and H vector fields are (A) (B) (C) (D) perpendicular in space . parallel in space. E is in the direction of wave travel. H is in the direction of wave travel. 11. The lower cut-off frequency of a rectangular waveguide with inside
Premium Hertz Alternating current Capacitor
Electromagnetic waves in space See the book “Optics” by Hecht sections 3.2 and 3.3 Speed of light: EM waves travel in a vacuum with speed c = c = 299‚792‚458 ms-1 exactly They are transverse waves with (vector) E and B field orthogonal to each other‚ for this section bold indicates vector quanties. When far from the source (many wavelengths) the E and B fields are in phase The vector E x B points in the direction of motion Travelling waves can be written as E = E 0 ⋅ ei ( kx −ωt ) and B = B 0 ⋅ ei
Premium Electromagnetic radiation Electromagnetism Maxwell's equations
Title: Introduction to Spectrophotometric Analysis Introduction: Spectrophotometric Analysis which is one of the most common and valuable analysis techniques used to study the interaction of electromagnetic radiation with chemical compounds (Stewart & Ebel‚ 2000). By using spectrophotometric analysis or spectrophotometry‚ one can determine the identity in terms of structure and species of a biomolecule as well as establish the concentration of a certain biomolecule (Stewart & Ebel‚ 2000).
Premium Spectroscopy Absorbance Amino acid