The Effect of Light Intensity The effect of different light wavelengths was tested in the following experiment. The rate of photosynthesis can be affected depending on the light treatment it receives. With the aid of DPIP acting as NADPH in photosynthesis‚ it was possible to observe the reaction as it took place. Samples were created with dark‚ 24 cm‚ 30 cm‚ and 49 cm light treatments. The absorbance was measured in five-minute intervals for each sample and recorded in an appropriate table
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produced by the resonating column of air will sound louder than the sound produced by the sound source. The expressions below show the relationships between the length of the column of air and wavelength‚ and the velocity of sound and wavelength. The relationship between the velocity of sound and wavelength is called the basic equation. í Setting Up u Set up the equipment as shown in the illustration‚ and fill with water‚ taking care it does not overflow. u Raise and lower the reservoir and check
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PHY112 – Lab 9 – Worksheet Directions •When you go to the simulation you will have a choice to either run the simulation or download the simulation. Run may not work on all computers. If it does not run‚ download the simulation and work from there. •When the simulation opens‚ play with the controls and buttons to become familiar with how the simulation works. •Note: A formal lab report is not required for this activity. You may cut and paste this worksheet to a new Word document and adjust the
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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 light that continues past the solute hits the phototube. The spectrophotometer then digitally
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Concentration of Potassium Manganate using Colorimetry Introduction The purpose of this experiment is to conclude the concentration of an unknown solution using colorimetry to plot a calibration curve. Colorimetry measures the absorption of light at wavelengths within the visible region of the electromagnetic spectrum. It can be used to identify the unknown concentration of a solution in reference to a solution of a known concentration. When a solution appears coloured‚ you see the colour that has not
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Physics notes – Interactions of light and matter Young was able to explain this result as a wave-interference phenomenon – the double-slit interference pattern demonstrates the wave-like nature of light. Free download and print from www.itute.com ©Copyright 2009 itute.com Explaining the interference pattern using the wave model Light has been described both as a particle and as a wave. Isaac Newton (~1665) made up a particle model of light to explain many of the known behaviours
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Atomic Spectra Lab Purpose: The purpose of this lab was to identify the wave length and spectra of the two elements‚ mercury and hydrogen. The wavelengths of the two elements represent the characteristic energies of moving electrons. The spectra of the two elements are what side of the energy spectrum their wavelengths are on. Materials: • Hydrogen lamp • Mercury lamp • 2 diffraction devices • Flashlight • Paper • Pencil • Calculator Procedure: 1. Place
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strong depence on the frequency/wavelength shorter wavelengths are scattered most longer wavelengths travel in (almost) straight lines Rayleigh scattering experiment? 4 RAYLEIGH SCATTERING Why is the sky blue? The blue color of the sky is due to Rayleigh scattering. As light moves through the atmosphere‚ most of the longer wavelengths pass straight through. Little of the red‚ orange and yellow light is affected by the air. However‚ much of the shorter wavelength light is absorbed by the gas molecules
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Measuring the Absorption Coefficient for Some Common Materials Used in Functional Rooms through Standing Wave Ratio Adonis Cabigon1‚ Alaiza Tangaha2 Department of Physics‚ University of San Carlos‚ Nasipit‚ Talamban‚ Cebu City 6000 1adoniscc@yahoo.com 2mayalaiza92@yahoo.com Abstract In this paper‚ we present the measurement of the absorption coefficient α of MDF (Medium Density Fiberboard) and Fiber Cement through an improvised standing wave apparatus consist of an enclosed tube with
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Chapter 21 Homework Due: 11:59pm on Sunday‚ July 28‚ 2013 You will receive no credit for items you complete after the assignment is due. Grading Policy Problem 21.1 The figure is a snapshot graph at = 0 of two waves approaching each other at 1.0 stacked vertically‚ showing the string at 1 intervals from = 1 to = 6 . . Draw six snapshot graphs‚ Part A =1 ANSWER: Answer Requested Part B =2 ANSWER: Answer Requested Part C =3 ANSWER: Answer Requested Part D =4 ANSWER:
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