Keep it as simple as possible, yet no simpler. Albert Einstein Illustration: The Meshing of Words With Images X-ray photograph of DNA [Rosalind Franklin,

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Presentation transcript:

Keep it as simple as possible, yet no simpler. Albert Einstein Illustration: The Meshing of Words With Images X-ray photograph of DNA [Rosalind Franklin, 1952]

Table 1. Reactor power levels in Chernobyl accident [Wolfson, 1991]. DateTimePower Level 4/251:00 am3200 MW 4/252:00 pm1600 MW 4/2511:10 pm1600 MW 4/261:00 am30 MW 4/261:19 am200 MW 4/261:23 am2,000,000 MW Figure 1. Simplified diagram of nuclear reactor [Wolfson, 1991]. Coolant Loss Reactor Vessel Core Pressurizer Steam Generator Two types of illustrations exist: tables and figures

Table 2. Sequence of events in the Chernobyl accident [Wolfson, 1991]. April 25 April 26 DateTimePower LevelEvent 1:00 a.m. 2:00 p.m. 11:10 p.m. 1:00 a.m. 1:19 a.m. 1:23 a.m MW 1600 MW 30 MW 200 MW 2,000,000 MW Operators begin power descent Power descent delayed for 9 hours Emergency core-cooling system disconnected Operators switch off automatic control Power descent resumed Power minimum reached Operators pull rods beyond allowable limits Operators start two additional coolant pumps Operators violate coolant flow limits Power surges by factor of 10,000 in 5 seconds Tables can present words as well as numbers

When presenting numerical data, you choose between tables and graphs Time (hour) midnight 2:00 4:00 6:00 8:00 10:00 noon 2:00 4:00 6:00 8:00 10:00 Normal (mg/dl*) Diabetic (mg/dl) Table 2. Blood glucose levels [Carlson, 1982]. * decaliters/milligram

Temperature (K) Distance From Burner (mm) Figure 3. Computational and experimental temperatures for laminar diffusion flames [Sandia, 1987]. Experiment Simulation Line graphs are common in engineering and science

Figure 4. Response of T-cells in cosmonauts after short-term and long-term flights [Konstantinova, 1991]. Cells% Flight Duration (Days) – –366 Normal range Bar graphs compare wholes

Figure 5. Schedule for the construction, evaluation, and production phases of the Solar One Power Plant. Task Construction Test and Evaluation Power Production Gantt charts are a type of bar charts

Industrial wastes (28%) Medical and research wastes (16%) Power reactor wastes (64%) Power Reactor Industrial Medical Government Government wastes (2%) Figure 5. Volume of low-level nuclear wastes from various sources [League, 1985]. Pie graphs compare parts of a whole

Figure 6. Estimated annual dose of radiation in the United States [GPU Nuclear, 1985]. Average dose: 160 mrem Natural Sources Medical Sources 85 mrem 70 mrem { Fallout: < 3mrem Occupational: < 1mrem Nuclear power: < 1mrem Graphs come in many forms

When presenting images, you choose between photographs, drawings, and diagrams Compressor Combustor Turbine

The main advantage of photographs is realism Figure 2. Space Shuttle Challenger, from about 59 seconds to 60 seconds into launch (January 28, 1986). On the right rocket, flame first becomes visible and then impinges on tank. 59 seconds 59.5 seconds 60 seconds

One advantage of drawings is control of detail Figure 5. Wind tunnel experiment at Virginia Tech for evaluating film-cooling designs for the blades of gas turbine engines [Thole and others, 2000]. Secondary Flow Primary Flow Secondary Flow Turbine Vanes Combustor Simulator Dilution Jet Film-Cooling Holes

The main advantage of a diagram is the ability to show flow of a variable through a system Figure 8. Schematic of test stand for evaluating components of an air conditioner design.

Figure 5. Schematic of thermal storage system. RECEIVER FLASH TANK HP HTR DEAR- ATOR HOT WELL TSSGTSSG TURBINE TSU DSPH TSH FT The thermal storage system stores heat in a huge, steel- walled tank. Steam from the solar receiver passes through heat exchangers to heat the thermal oil, which is pumped into the tank. The tank then provides energy to run a steam generator to produce electricity. A schematic of this system is shown in Figure 5. Scientists and engineers often use illustrations that are too complex for the text

The thermal storage system, shown in Figure 6, stores heat in a huge, steel-walled tank. Steam from the solar receiver heats a thermal oil, which is pumped into the tank. The tank then provides energy to run a steam generator to produce electricity. Figure 6. Schematic of thermal storage system for the solar power plant. steam generator 650°F 580°F 425°F 435°F solar receiver 575°F 425°F 530°F 250°F Thermal Tank Heat Exchanger Heat Exchanger The precision of the illustrations should reflect the precision of the text

Figure 7. Title of figure. Some formats allow you extra sentences to explain unusual details...., as shown in Figure 7. For clarity, you should introduce and explain illustrations in the text

The testing hardware of the rocket shown in Figure 8 has five main components: camera, digitizer, computer, I/O interface, and mechanical interface. Commands are generated by the computer, then passed through the I/O interface to the mechanized interface where the keyboard of the ICU is operated. The display of the ICU is read with a television camera and then digitized. This information is then manipulated by the computer to direct the next command. PRINTER CONTROL TERMINAL COMPUTER DIGITIZER CAMERA ELECTRO- MECHANICAL INTERFACE ROCKET Figure 8. Testing hardware. Inconsistencies between text and images disrupt fluidity

Our system for testing the launch controls of the rocket consists of four main parts: computer, electro-mechanical interface, camera, and digitizer. In this system (shown in Figure 9), the computer generates test commands to the rocket through the electro- mechanical interface. The test results are read with a television camera, and then digitized. The computer receives the information from the digitizer, and then directs the next test command. Figure 9. System to test launch controls for rocket. Camera Digitizer Computer Electro- Mechanical Interface Rocket Illustration is the meshing of words with images