Fan death is a widely held belief in South Korea that an electric fan left running overnight in a closed room can cause the death of those sleeping inside. All fans sold in South Korea come with an automatic timer that turns the fan off after a certain number of minutes.[1] ------------------------------------------------- Origins of belief The genesis of this misconception is unclear‚ but fears about electric fans date almost to their introduction in Korea‚ with stories dating to the 1920s
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the operating procedure and principle as well as the efficiency of centrifugal fans. B. Theory and Analysis Tests of ventilating fans or blowers are made frequently by a very simple method‚ that is‚ by determining the necessary data for a calculating efficiency by measuring the work done by the fan “on the air” in giving velocity‚ and the horsepower required to drive the fan alone‚ excluding bearing friction. The fan is preferably operated by an electric motor‚ of which the efficiency can be
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sports fan‚ there is nothing more exciting than going to a sporting event of my favorite team. To be surrounded by other sports fans who are rooting for the same team as you brings a sense of togetherness. The feeling of "this is our team" and "if they win I win" brings all sports fans together. However‚ even with this togetherness bond between sports fans‚ they can be classified into four distinct categories. The first category and the most common is the casual sports fan. The casual sports fan will
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Chapter 3 Discussion of findings This chapter discusses the answers to the objectives raised in this study. Remotely-Controlled Automatic Clothesline The current system is a clothesline presented in mechanically controlled by magnets. It uses X-10 module interfaced with the stamp to provide power to the clothesline from a remote location. It uses a phototransistor that acts as a motion sensor for clothes moving the line. In figure 1‚ it shows the software flow chart of the existing system
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Bulacan State University Sarmiento Campus “Automatic Clothesline” In partial fulfilment in research methodology Submitted by: Mark Cyrill R. Manzon BSIT-3B Submitted to: Mr. Pedro Abanador Instructor Submitted by: Mark Cyrill R. Manzon BSIT-3B Submitted to: Mr. Pedro Abanador Instructor CHAPTER I PROBLEM AND ITS BACKGROUND Introduction In today’s present era of the technology was evolved
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meter (N/m2)‚ or pascals (Pa). 3. Slowly drag the temperature (T) slider back and forth. (Note: In this Gizmo‚ the Kelvin scale is used to measure temperature. On the Kelvin scale‚ 0 degrees is absolute zero‚ the coldest possible temperature. Absolute zero is equal to -273.15 °C or -459.67 °F) A. How does the change in temperature affect the speed of the molecules? __If the temperature is colder the molecules move slower and if the temperature is hotter the molecules move faster.
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AUTOMATIC TEMPERATURE CONTROLLED FAN H ere is a circuit through which the speed of a fan can be linearly controlled automatically‚ depending on the room temperature. The circuit is highly efficient as it uses thyristors for power control. Alternatively‚ the same circuit can be used for automatic temperature controlled AC power control. In this circuit‚ the temperature sensor used is an NTC thermistor‚ i.e. one having a negative temperature coefficient. The value of thermistor resistance at
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AUTOMATIC GUITAR TUNER Malaysian Institute of Information Technology‚ Universiti Kuala Lumpur SEPTEMBER 2013 AUTOMATIC GUITAR TUNER NUR MUHAMAD BIN FADLULLAH TEY (52118211466) MOHAMMAD EZZAT BIN EDROS (52118211381) Report Submitted in Fulfilment of the Requirements For the Diploma of Engineering Technology in Engineering & Computing Malaysian Institute of Information Technology‚ Universiti Kuala Lumpur SEPTEMBER 2013
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A PROJECT REPORT ON AUTOMATED RAILWAY GATE CONTROL AND TRACK SWITCHING SUBMITTED BY‚ KHAN MAAZ (41) GUIDED BY : HEAD OF DEPARTMENT : MAHARASHTRA STATE BORD OF TECHNICAL EDUCATION 200 -200 Certificate Acknowledgement It is indeed a matter of great pleasure and
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AUTOMATIC STABILIZERS Taxes and transfer payments that stabilize GDP without requiring explicit actions by policymakers are called automatic stabilizers. Both government spending and tax revenues are very sensitive to the state of the economy. Because tax collections are based largely on individual and corporate income‚ tax revenues will fall sharply during a recession as national income falls. At the same time‚ government transfer payments for programs such as unemployment insurance and food
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