Light is everywhere in our world. We need it to see: it carries information from the world to our eyes and brains. Seeing colors and shapes is second nature to us‚ yet light is a perplexing phenomenon when we study it more closely. Here are some things to think about: Our brains and eyes act together to make extraordinary things happen in perception. Movies are sequences of still pictures. Magazine pictures are arrays of dots. Light acts like particles—little light bullets—that stream from the
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Distance from light/mm | Colorimeter reading/arbitrary units | | Algal balls solution | Hydrogen carbonate solution | | 1 | 2 | mean | 1 | 2 | mean | 0 | 0.52 | 0.52 | 0.52 | 0.50 | 0.50 | 0.50 | 250 | 0.52 | 0.45 | 0.49 | 0.59 | 0.63 | 0.61 | 500 | 0.50 | 0.49 | 0.50 | 0.52 | 0.55 | 0.54 | 750 | 0.47 | 0.55 | 0.51 | 0.54 | 0.53 | 0.54 | 1000 | 0.58 | 0.56 | 0.57 | 0.52 | 0.54 | 0.53 | Results Results The results do not show the general relationship between light intensity and
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Truesdell AP Biology Period 5 2 October 2013 CHAPTER 7 STUDY GUIDE AN OVERVIEW OF PHOTOSYNTHESIS Autotrophs are plants that can feed themselves by making their own food. Photo-autotrophs are organisms that produce organic molecules from inorganic molecules using the energy of light. Producers are when plants make their own organic molecules. A redox reaction is oxidation and reduction. Photosynthesis takes water and carbon dioxide to make glucose and oxygen. Cellular respiration takes glucose
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Photosynthesis is process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose. In so doing‚ photosynthesis provides the basic energy source for virtually all organisms. An extremely important byproduct of photosynthesis is oxygen‚ on which most organisms depend. Photosynthesis occurs in green plants‚ seaweeds‚ algae‚ and certain bacteria. These organisms are veritable sugar factories‚ producing millions of
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Submit your completed lab report to the Lab: Photosynthesis Lab assignment link for grading. For information on how this assignment will be graded‚ please visit the Course Information sectionChlorophyll and Accessory Pigments A pigment is any substance that absorbs light. The color we see comes from the wavelengths of light that reflect. Chlorophyll‚ the green pigment common to all photosynthetic cells‚ absorbs all wavelengths of visible light except green. The green reflects back to our eyes
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How does the Wavelength affect the Refractive Index? The aim of this experiment is to investigate the relationship between the refractive index and the wavelength. We will be testing 5 different wavelengths: 630nm (red)‚ 570nm (yellow)‚ 532nm (green)‚ 445nm (blue) and 405nm (violet). Figure 1 Figure 1 What is the refractive index? The refractive index is the measurement of how hard it is for light to pass through a certain substance‚ thus affecting the speed of light. By knowing the
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Photosynthesis Lab Before you begin‚ save this Lab Report Template on your computer as LastNameAPBIOPhoto Read all the instructions below BEFORE you start! 1. Please go to the following website: http://www.biocourse.com/mhhe/bcc/domains/biolabs.xsp 2. Scroll down and click on the link to Photosynthesis. It is the 6th one down on the left. 3. Read the instructions for entering the virtual lab. There is background information in the online lab manual that will be helpful in interpreting
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Photosynthesis Lab Data Collection: The absorption of different wavelengths of light by Chlorophyll Wavelength (nm) Absorbance of light by chlorophyll (Arbitrary units) Diluted Calculation New Reading (Arbitrary units) Violet 430 2.35 50% 2.35 x 2 3.20 Blue 470 1.09 - - 1.09 Blue-Green 492 0.38 - - 0.38 Green 520 0.77 - - 0.77 Yellow-Green 550 0.85 - - 0.85 Yellow 580 1.43 - - 1.43 Orange 600 0.65 - - 0.65 Red 700 0.16 - - 0.16 Absorption and reflection of light: Different
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Comparing Wavelengths In The Electromagnetic Spectrum Gamma rays have the smallest wavelength in the electromagnetic spectrum‚ there is only 0.03 nano meters between the peak of each wave as is shown in this diagram. There is a universal speed that electromagnetic waves travel at which is 300m/s and this means that the wave frequency depends on the wavelength. The wave frequency for gamma rays is 300/0.03=10000hz. Gamma rays are produced by violent events in the universe such as supernovas and
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"The light begins…the light ends" Dulce Maldonado Abstract: In this lab the students did two labs in which they learned the process of photosynthesis‚ which involves the use of light energy to convert carbon dioxide and water into sugar‚ oxygen‚ and other organic compounds. Oxygen is released as a product. This process is often summarized by the following reaction: 6CO2 + 12H2O ------> C6H12O6 + 6H2O + 6O2 The energy of photosynthesis comes from absorbed photons found in light and involves
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