One student sustained vibration control motor until refrigerator lifted,woolrich outlet online, while another student to withdraw refrigerator below weighbridge. Video screenshot<br>Total lift a refrigerator with a cell phone a few minutes? Tsinghua University, two students gave the answer.<br> <br>Recently, called "Tsinghua phone hanging refrigerator geeks realize people version of" Big Bang "," popular in the network of video clips,http://vegalta7.s156.xrea.com/aska/aska.cgi/link, picture two students to find the source of power in a small mobile phone,piumino moncler outlet, through the reduction gear to let power power amplifier 10 times, the success of lifting weighs 60 kilograms of household refrigerators. This allows many users think the US drama "Big Bang," praise, "China also has a science geek"; but there are also users questioned the experiment might outside help, are cottage version of "Big Bang."<br> <br>Small Mobile lift large refrigerator<br> <br>Recently, the "mobile crane refrigerator," the video clips in the net jump up red, traffic soared to a total of a million times.<br> <br>Short films, two students first looks at an ordinary mobile phone power source, then install third-party smart program (application program) in the phone to support continuous operation power source, then by assembling the gear unit, fixed pulley, and other related accessories steps to prepare for the test.<br> <br>Experiment stage, driven by a power source, the experimental parts acting together,http://www.tagata-vet.com/bbs/aska.cgi?res=2588%22, carrying the weight of standard weighbridge gradually reduced the number of refrigerator until zero, refrigerator is slowly lifted.<br> <br>Video is just 2 minutes and 15 seconds, but in the Internet caused a heated debate, many users expressed surprise and admiration, but there are users that "impossible."<br> <br>Experiments which will cost 500 yuan<br> <br>Yesterday, the experiment originators, Tsinghua University School of Aerospace Professor Gao Yunfeng, from the initial design to the experiment was a success with a two-week period, the cost spent less than 500 yuan, of which three hundred dollars to buy a second-hand refrigerator, ground Scales also borrowed, experiments are completed within a half hour. Gao said he believed the success of the experiment is not surprising, "always in scientific theories and technical support to complete."<br> <br>For experimental purposes, Gao said, he likes to use innovative ways of teaching, help students get rid of the boring theory, feel the fun of science. He hopes this video will give users bring inspiration, let everyone know that the use of knowledge can challenge real problem, using simple tools and materials that can accomplish the seemingly impossible task.<br> <br>Prior to lifting only 20 kilograms of water<br> <br>Students participating in the experiment said Liang Bin, the first experiment, he still relatively calm, but as time goes by, looking on the weighbridge readings became smaller, he started a little nervous and very excited after the experiment was successful.<br> <br>Liang Bin said, there were three options when designing experiments, but in the reserve "eccentric rotor" situation making accessories, there are strict requirements for the production of precision, the effect is not ideal. In the end, they chose the video program. And before the "mobile crane refrigerator" experiment began,http://t5117.com/news/html/?87252.html, a few people have never really tried to lift a refrigerator and weighs about 60 kg, successfully lifted over a barrel only about 20 kilograms of bottled water.<br> <br>■ Step<br> <br>1 Find the phone traction<br> <br>First open the phone beginning of the experiment, find a built-in vibration motor,moncler outlet, as the power output member, the motor side length of about 4 mm, the eccentric rotor on the motor removed. Connectors bought experiment with this motor and a fixed base. Experiment, since the motor continued rapid acting, in order to avoid the heat generated burned parts, also add from time to time at a temperature of about minus 72 ℃ solid dry ice to cool the motor.<br> <br>2 The APP allows continuous vibration motor<br> <br>Liang Bin, then placed inside a third-party smart phone application (APP), click Show icon on the phone screen to control the motor so that it can continue to shock. Liang Bin said, APP can control circuit has been in communication with the state, in order to test the traction motor, after loading the APP,http://www.matsue-yado.com/otoku/clip.cgi, try to lift a weight of 1 g straws, test the sustainability of motor sport.<br> <br>3 super increase friction reducer<br> <br>A 1000-fold reduction gear motor gear installed by connecting members and connected to a shaft and then connect a 100-fold and 1000-fold reduction gear reducer to reach the phone 10 times the motor torque amplification effect . In the motor speed is reduced by 10 times, while increasing the friction. Liang Bin said, according to "power = friction × speed" formula,http://rehabili.godream.ne.jp/cgi-bin/bbs14/bbs14.cgi, when the output power is fixed, can slow down the increased friction. Mobile motor can achieve the ultimate effect of lifting the refrigerator. This principle is equivalent to climbing in the car, hanging low gear lower gear speed to increase the power.<br> <br>4 Install the fixed pulley hanging refrigerator<br> <br>Making a steel wire around an axis for the side axis and 100-fold reduction gear fixed,hogan outlet sito ufficiale, the other side of the base is fixed. In the laboratory roof fixed a fixed pulley, fixed pulley through the wire line and is connected on the fridge weighbridge.<br> <br>After the motor starts running, will bring all the equipment to work," target="_blank" style="text-decoration: none;">http://tucchy.sakura.ne.jp/c/epad2/epad.cgi?mode=view&no=2945&res=1&page=20, rope slowly lift the refrigerator. After about 1.5 hours, weight readings weighbridge is zero, after the weighbridge removed, refrigerator vacant, successfully lifted.<br> <br>■ questioned<br> <br>Experimental be successful external borrowing?<br> <br>Some Internet users questioned, that cell phones are so small, how can lift a refrigerator? And suspected lifting force of the refrigerator, do not fully support mobile motor is provided.<br> <br>Response: Professor Gao Yunfeng, he said the experiment is very simple principle, is the principle we learned in high school had P = FV (power = friction × speed), but this formula will be applied to real life, you need based on the theoretical basis of on the imagination and the imagination applied to real, so many people feel this experiment impossible.<br> <br>Gao said, the success of the experiment just shows the power of science, the phone when the experiment was the protagonist of reasons to use the mobile phone with respect to the refrigerator, the size disparity, lifting experiment using a mobile phone refrigerator, surprising at the same time, You may be impressed in their hearts.<br> <br>2 This experiment is a cottage version of "Big Bang"?<br> <br>Some netizens said that the US drama "Big Bang" popular in the network, the experiment should be borrowed from the drama inspiration, or similar whimsy was completed.<br> <br>Response: Gao said, he had never seen the "Big Bang," the drama,http://www.postyourflasher.com, while Liang Bin also said that only read a little bit, in this drama did not disclose the "mobile crane refrigerator" experiment and theory, this experiments are completely original, although the experimental environment, the use of accessories relatively simple, but this experiment is indeed teachers and students under the guidance of scientific theory, common design is completed,http://store.shopping.yahoo.co.jp/lens-deli/5-fairyp.html, there is no reference.<br> <br>■ Similarly Tips<br> <br>Small force a big role<br> <br>Windy winter near the window, but the window shut very strict indeed. Why is this?<br> <br>Not the same as long as the indoor and outdoor temperature, indoor air flow will be weak. For example, the south-facing side of the house has a winter sun temperature higher, the north side of the low temperature some, so indoor air naturally flows up. If you do not have this whiz cool, in the north, where the windows hang curtains, use cloth poor thermal conductivity than air, it can slow down air convection.<br> <br>Similarly, someone clever use of such weak flow of air, so that he can live in a hot environment. Arabs always wore wide robes, because in the Arab region hot and dry, if you wear a jacket, sweating more than one stand, the second is too strong sunlight. Wear wide clothing, not only to resist the sun, and the air convection inside the robe of space, just like the house, like air convection, so the body is not hot in robes.<br> <br>Applied to real life, the Earth's surface,moncler outlet, due to the sun exposure, hot air rises, cold air will supplement come around, thus forming a wind. People can use the wind to make sailing at sea, or wind power.<br> <br>Edition written / reporter An Ying<br><br>
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