easily solar energy is converted into light energy is important. The Photovoltaic effect is a process through which the PV cells transfers light into electricity. sunlight is made of photons. these photons contain different amounts of energy. When they strike a PV cell‚ they reflect‚ absorb and pass right through. when a photon is absorbed‚ it turns into electrical energy. This energy is transferred to an electron in the semiconductor. then the escaped electron becomes a part of the electrical circuit
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Exercise #2 Pre Lab This lab will teach me how to use a spectrophotometer. The use of the spectrophotometer is to measure the concentration of solute. The solute being measured must be colored and is determined based on the adsorption of light photons on a wavelength. The spectrophotometer uses a beam of light that strikes the diffraction grating that basically forms of prism of light. Then only a specific wavelength of light shines through the spectrophotometer and interacts with the solute. The
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LESSON ONE: Speed of light: C= 3 x 10^8 m/s‚ C=3x10^5 km/s Light year= dist= speed x time Earth rotates 360 deg every SIDEREAL DAY 1 Sidereal day= 24 sidereal hrs= 23:56 solar hours Earth revolves 360 around the sun ever 365.24 days= tropical year Earth’s rotation axis precesses every 26‚000 yrs Moon revolves 360 deg ever 27.3 days= Sidereal mon Moon’s cyc repeats every 29.5 days= Syndonic mon Saros cycle: one eclipse yr is only 346 days. 19 eclipse years= 223 syndonic months. LESSON ONE
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PHYSICS OF EVERYDAY LIFE BY Neha arora DEPARTMENT OF APPLIED SCIENCES Science is around us everywhere. The water you are drinking has science in it; the house you are living in has science in it. Anywhere you go‚ whatever you do sciences will surely going to help you. When we talk about the educational science‚ there are many other subjects which come under science. These subjects are called branches of science. Some of them are physics‚ chemistry‚ biology‚ astrology‚ etc. Physics is more than
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Http://www.ei.gov/kids/energy.cfm?page=solar_home-basics * The sun has produced energy for billions of years. Solar energy is the sun’s rays (solar radiation) that reach the Earth. This energy can be converted into other forms of energy‚ such as heat and electricity. * In the 1830s‚ the British astronomer John Herschel famously used a solar thermal collector box (a device that absorbs sunlight to collect heat) to cook food during an expedition to Africa. Today‚ people use the sun’s energy
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University Malaysia Terengganu Department of Chemical Sciences KIM3402 Laboratory Reports for Spectrometry Program: Bachelor of Science (Chemistry) Lab Group: K1 Prepared for: Dr. Noorashikin Binti MD Saleh Name of Author : Liew Ken Min Student ID : UK 31217 Signature : TABLE OF CONTENTS PAGE CHAPTER 1 Theory and Objectives of the experiment 3 1.1 General Properties of Spectroscopic Methods 1.2 UV-Vis Spectroscopy 1.3 Fluorescence Spectroscopy 1.4 Atomic Spectrometric
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and tell him/her that all the photons that ever bounced off your face‚ all the particles whose paths were interrupted by your smile‚ by the touch of your hair‚ hundreds of trillions of particles‚ have raced off like children‚ their ways forever changed by you. And as your widow rocks in the arms of a loving family‚ may the physicist let him/her know that all the photons that bounced from you were gathered in the particle detectors that are her/his eyes‚ that those photons created within her/him constellations
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In our lab‚ we were given the task of burning seven different salts and taking notes of what we observed. The different salts included Potassium chloride‚ Calcium chloride‚ Strontium chloride‚ Lithium chloride‚ Copper II chloride‚ Sodium Chloride‚ and Barium Chloride. Burning a pinch of each salt separately by holding a nichrome wire over a Bunsen burner‚ we found that each salt emitted a different color of light. For example‚ Potassium Chloride burnt a bright pink flame when burned‚ while Calcium
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The Big Bang For decades the Big Bang theory has been the leading theory on the beginning of our universe. Alternate theories come and go‚ but mainly go. As new data and research are continually eliminating alternatives to the standard model of cosmology‚ the Big Bang just keeps getting stronger. Before discussing the alternate theories to the Big Bang theory‚ the basics of the early universe should first be understood. The main points opposing the theory are based around a few aspects that will
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