Example Effect of Light Refraction?

Example Effect of Light Refraction?

Example Effect of Light Refraction? 1

Refraction of Light as it passes from more dense to less dense mediums The bending of light as it passes from one medium to another is called refraction. The angle and wavelength at which the light enters a substance and the density of that substance determine how much the light is refracted. The refraction of light by atmospheric particles can result in a number of beautiful optical effects like halos, which are produced when sunlight (or moonlight) is refracted by the pencil-shaped ice crystals of cirrostratus clouds. When light passes from a more dense to a less dense substance, (for example passing from water into air), the light is refracted (or bent) away from the normal. The normal is a line perpendicular (forming a 90 degree angle) to the boundary between the two substances. The bending occurs because light travels more slowly in a denser medium. Another example of refraction is the dispersion of white light into its individual colors by a glass prism. As visible light exits the prism, it is refracted and separated into a magnificent display of colors. Photograph by: Susan Schwartzenberg (c)1997, The Exploratorium Each color from the original beam of light has its own particular wavelength (or color) and each wavelength is slowed differently by the glass. The amount of refraction increases as the wavelength of light decreases. Shorter wavelengths of light (violet and blue) are slowed more and consequently experience more bending than do the longer wavelengths (orange and red). -------------------------------------------------------------------------------- mechanisms Terms for using data resources. CD-ROM available. Credits and Acknowledgments for WW2010. Department of Atmospheric Sciences

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Is it possible for humans to see under the visible light spectrum, unaided?

Not with our eyes. The rods and cones in the human eye will not react to photons that do not have enough energy, no matter how many of those photons arrive at the same time. This is the same idea as the photoelectric effect for which our pal Al banked a Nobel prize.The longest wavelength/least energetic light of the visible spectrum corresponds to the color red. Light that is just a tad longer in wavelength and smaller in energy is called infrared. Infrared light will not trigger the chemical reactions in your eyeu2019s rods and cones but it does produce warming and is how heat lamps used in the food service industry work. A narrowly focused beam of infrared light striking the human body will produce a localized warming sensation and that detection might be interpreted as a form of unaided seeing but seeing the infrared light emitted by life-forms and objects is not something that humans can do but maybe other species on Earth can see infrared, particularly predators might find it to be a survival advantage. Is it possible for humans to see under the visible light spectrum, unaided?

Example Effect of Light Refraction? 2

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Low latency short range high resolution visible light laser proximity sensor unit [closed]

I would advise you to severely rethink your requirements. You appear to be trying for a laser-based Theremin. A few objections then arise.1) Millisecond response time. People cannot move their hands with millisecond control. Basic human reaction time is on the order of a tenth of a second or two.2) Spatial resolution. .001 mm. Are you kidding? That is 40 millionths of an inch! I defy you to control your hand to that sort of accuracy. Any system which will produce detectible results for that kind of motion will be wildly uncontrollable. 3) Visible light laser. (for the show effect, but mostly for better visual control) Are you making a light show or an instrument? You do understand, I hope, that an instrument is judged on the sounds it makes, rather than visual effects. Visual feedback in an acoustic device invites feedback conflict

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How's Visible light used in astronomical discoveries?

they look thru telescopes, just like any astronomer would

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What has a higher frequency then visible light?

short wavelength, with higher frequency---> ultraviolet, X-ray, gamma, cosmic longer wavelength lower frequency---> infrared, microwave, radio and tv waves, electric waves

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How do cell phone cameras change infrared light into visible light?

A digital camera doesnu2019t turn *anything* into visible light. It converts light that it sees into RGB intensity values in a digital image, and thatu2019s all. Then the display on the phone converts those RGB intensity values into a visible-light image, since thatu2019s what it is designed to do. Now, it happens that all silicon sensors are sensitive to near-IR light. Unless the camera has an incredibly effective IR-blocking filter, some amount of IR gets through to the sensor. It has to pass through the RGB filters deposited on the sensor, but those filters are designed to provide good colour separation only for visible-light wavelengths, and tend to pass IR more freely. So the IR makes it to the silicon of the sensor, which then converts the IR to electrons that are completely indistinguishable from the electrons produced by visible light.The voltage at each pixel on the sensor is assumed to represent the brightness of visible red, green, or blue (depending on the filter colour at that pixel), and the de-mosaicing process interpolates this data to calculate R, G, and B at every pixel in the sensor. This gives the RGB data which is passed to the display. So, in summary: Silicon sensors are sensitive to near-IR light. Some amount of IR light tends to get into the sensor, where it is assumed to be more visible light and changes the RGB image. In daylight, the amount of IR is minor, and the IR doesnu2019t change the image much. But in the dark, or in the presence of a bright IR source, the IR may be the major light source and produce most of the image. The sensor canu2019t distinguish between visible and IR reaching it, so the resulting RGB always assumes that the output of the sensor is due to visible light - but in some circumstances itu2019s actually primarily IR.How do cell phone cameras change infrared light into visible light?.

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Introduction to visible light communication technologyVisible light communication technology transmits information by using high-speed light and dark flashing signals invisible to the naked eye issued by fluorescent lamps or light-emitting diodes. It can be used by connecting the wire device of high-speed Internet to the lighting device and inserting the power plug. The system made of this technology can cover the range of indoor lighting, and the computer does not need wire connection, so it has a wide development prospect.Characteristics of visible light communication technologyCompared with the currently used wireless local area network (wireless LAN), the "visible light communication" system can use indoor lighting equipment to replace the wireless LAN base station to transmit signals. Its communication speed can reach tens to hundreds of megabytes per second, and the transmission speed may exceed the optical fiber communication in the future. Using special computers and mobile information terminals capable of receiving and transmitting signals, high-definition portraits, animations and other data can be downloaded and uploaded for a long time as long as they are illuminated by indoor lights. The system also has the characteristics of high security. With curtains to cover the light, the information will not leak out to the outside, and the use of multiple computers will not affect the communication speed. Since radio wave communication is not used, hospitals and other departments sensitive to electromagnetic signals can use the system freely.Without WiFi signal, you can surf the Internet by lighting an LED light. An international cutting-edge communication technology using indoor visible light to transmit network signals has been successfully realized in the laboratory. Researchers connect the network signal to a 1W LED light bead, and four computers under the light can access the Internet, with a maximum speed of 3.25G and an average internet speed of 150m, which can be called the world's fastest "light Internet access". Visible light communication is called lifi.Radio signal transmission equipment has many limitations. They are rare, expensive, but inefficient. For example, mobile phones, millions of base stations around the world help them enhance their signals, but most of the energy is consumed in cooling, with an efficiency of only 5%. In contrast, there are countless bulbs used all over the world, especially in China, where LED light sources are replacing traditional incandescent lamps on a large scale. As long as a microchip is added to any humble LED bulb, it can turn the bulb into a wireless network transmitter.Visible light communication is safe and economical. Researchers not only use visible light to transmit network signals in the laboratory environment, but also realize "one drag four", that is, lighting a small lamp, and four computers can surf the Internet and transmit network signals to each other at the same time. Like radio waves, light belongs to a kind of electromagnetic wave, and the basic principle of transmitting network signals is the same.If you install a microchip on an ordinary LED bulb, you can control it to flash millions of times per second. When it is on, it means 1 and when it is off, it means 0. Because the frequency is too fast, the human eye can't detect it at all, but the photosensitive sensor can receive these changes. Binary data is quickly encoded into light signals and transmitted effectively. The computer under the light transmits signals through a set of special receiving devices. Where there are lights, there are network signals. Turn off the lights and there's no Internet. Compared with the existing WiFi, the future visible light communication is safe and economical. WiFi relies on invisible radio wave transmission, equipment power is increasing, and local electromagnetic radiation is bound to increase; The wireless signal passes through the wall, and the network information is unsafe. These security risks are "swept away" in visible light communication. Moreover, the spectrum is 10000 times larger than the radio spectrum, which means greater bandwidth and higher speed, and the network setting hardly needs any new infrastructure.Principle of visible light communication technologyEncode information using the brightness and darkness of light. The light source adopts a new era of high brightness light emitting diode (LED). When the LED is on, it means 1 and when it is off, it means 0. Scientist Haas claims that by adding a microchip to any humble LED bulb, it can control its millions of flashes per second. Because the frequency is too fast, the human eye will not detect it, but the photosensitive sensor can receive these changes. In this way, binary data is quickly encoded into light signals and effectively transmitted.Prospect analysis of visible light communication technologyAt present, the best choice for indoor wireless communication to meet the requirements is white LED. While providing indoor lighting, white LED is used as communication light source, which is expected to realize indoor wireless high-speed data access. At present, the power of commercial high-power white LED has reached 5W, and the luminous efficiency has reached 90lm / W. its luminous efficiency (lumen efficiency) has exceeded that of incandescent lamp and is close to that of fluorescent lamp. The light efficiency of white LED exceeds 100lm / W and reaches 200lm / w (which can completely replace the existing lighting equipment) and can be realized in the near future. Therefore, LED lighting optical communication technology has great development prospects and has attracted extensive attention and research1. Information transmission of intelligent transportation systemIntelligent transportation system can reduce traffic congestion, fuel consumption and traffic accidents by receiving and sending relevant information about traffic operation status in time. Image processing is helpful for traffic signal recognition, obstacle detection and other information reception. It is a key technology in intelligent transportation system. Visible light communication technology combined with high-speed data image sensor has a very promising application prospect in intelligent transportation system. Relevant researchers use LED light and high frame rate and high-resolution cameras installed on vehicles to carry out communication between roadside devices and vehicles. The research results show that this system can effectively accept the data sent by 256 LEDs array light sources when the vehicle is running at 30km / h and within 35m.2. High speed data transmission in visible light communicationLarge amount of data, such as high-speed information stream download, high-definition video transmission and other information acquisition, has become an indispensable part of today's society. Visible light communication technology can carry out data transmission with the attention of very small divergence angle, and visible light communication technology can realize the reception and transmission of high bandwidth secure data stream because of its relatively low path transmission loss. For example, the European Omega project has launched a visible light communication data transmission with four high-definition data streams of 100MB / s. 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Boeing Commercial aircraft platform is promoting the research of future infinite optical network scheme.Extended reading: Research on visible light communication in ChinaAfter testing and certification by the Ministry of industry and information technology, China's "Research on Key Technologies of visible light communication system" has made a major breakthrough recently. The real-time communication rate has been increased to 50Gbps (bits per second), which is equivalent to 0.2 seconds to complete the download of a high-definition movie.Visible light communication is a new high-speed data transmission technology that uses the light of semiconductor lighting (LED lamp) to realize "Internet access with light". Visible light communication technology is green and low-carbon, which can realize almost zero energy consumption communication, effectively avoid the weaknesses of radio communication, such as electromagnetic signal leakage, and quickly build a secure information space with anti-interference and anti interception.Wu Jiangxing, a famous expert in China's information field and academician of the Chinese Academy of engineering, said that at present, the world has a lighting network composed of about 44 billion lamps, and the integration of tens of billions of LED lighting equipment with other equipment will build a huge visible light communication network. It is conceivable that after the realization of large-scale visible light communication in the future, each lamp can be used as a high-speed network hotspot. People can download several movies under the street lights when waiting for the car. They can also use the LED light source for wireless high-speed Internet access on aircraft and high-speed rail to meet the needs of indoor network, Internet of things, Internet of vehicles, industry 4.0, secure payment, smart city, national defense communication, weapons and equipment Wireless communication demand at the end of the network, such as electromagnetic sensitive area, provides a new cheap access method for Internet plus.Wu Jiangxing predicts that in the next few decades, the transmission volume of information will exceed the carrying capacity of the existing radio spectrum. Visible light communication technology can effectively break through the dilemma of serious shortage of radio spectrum resources. 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After more than three years of scientific and technological research, it has successively developed application demonstration systems such as "visible light on demand TV business", "visible light new wireless broadcasting" and "visible light precise positioning".
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Why Does an Air Conditioner Sometimes Take so Much Time to Cool a Room?
Why Does an Air Conditioner Sometimes Take so Much Time to Cool a Room?
In one word "capacity".Capacity" in relation to air conditioners is a measure of how fast they can transfer heat from inside the room to outside.Every room presents a "heat load" This is a combination of:The size of the roomThe temperature difference between inside the room versus outside the roomThe type of insulation / insulating materials between the room and outside the roomThe orientation of the room with respect to the sunThe number and type of windows and window dressings (awnings / curtains etc)The number of occupantsOther sources of heat including lights, devices such as televisions, computersAs your air conditioner extracts heat from the room, additional heat is being added to the room both from outside the room and from sources of heat within the room.If your room is eventually cooling down but takes a long time, that suggests that the capacity of the air conditioner is greater than the heat load, but not by much. In other words, you have little spare capacity.Your options to improve the situation are:Reduce the room's heat load. Things like covering windows with external shade, internal thermal curtains, better ceiling insulation etc. Ensure that the air conditioner is able to run effectively, with as much capacity as possible. Things like ensuring the indoor units filters are clean, ensuring both the indoor and outdoor coils are clean, checking that indoor and outdoor fans are all operational.If you have done everything possible to reduce the heat load and maximise the effectiveness of your air conditioner and it still takes too long to cool your room, another option is to turn it on earlier, so there is less heat to remove from the room, or leave it on at a higher setpoint, again to reduce the amount of heat the air conditioner has to remove before you feel comfortable. The last option is to replace your air conditioner with a unit with a greater cooling capacity. Obviously this is the most expensive option. It is also the reason why when choosing an air conditioner in the first place, getting the correct capacity is so important. Professionals will perform a heat load calculation to work out the capacity of cooling required. As you can see, getting this right is very important to avoid these sorts of situations from occurring in the first place..1. can you put an air conditioner in a room within a room?No because you will not be able to use the other room, nor the AC will work efficiently,and the performance of your AC will gradually reduce in a short span of time, due to lack of fresh air flow which the other half of your needs to discharge th heat collected from AC room. Butter get raid of your window type, go in for split AC.2. why does my air conditioner make my room smell like a locker room?Usually your air conditioner has a filter. Take the filter out and soak it in a solution (50/50) 4 cups vinegar /4 cups water, then throw a little baking soda (1/4 cup) Soak for 3-4 hours, let it dry in the sun. This should take the moldly, mildew smell out. If it does not , you may need to buy a new filter. Good luck!3. I have to install an air conditioner but the outlet has a round hole and 2 horizontal slots underneath?The more correct way is to find an outlet that fits your a/c. Are you trying to hook a 110 to a 220 outlet? Even so you can change the outlet to match your power cord. Shut off the breaker that feeds this outlet and swap it out. If going from 220 to 110, just cap off the extra 110 feed wire and fold it up in the box. Use the remaining wires on the new outlet4. Dorms and cooling question, Evaporative (swamp) or air conditioner?You definitely need an air conditioner because, like you said, we do not have very many humid days. I have had friends buy swamp coolers because they are trying to save a buck and they end up having to buy an a/c.5. Air conditioner btu rating needed for 1500 sq ft home-need opinions?to top length an AC equipment call a qualified HVAC contractor and characteristic them carry out a warmth/COOLING analysis. which will furnish the coolest length required. employing sq. pictures on my own is not the magnificent thank you to length.
Want to Play a Killer Video Game?
Want to Play a Killer Video Game?
One of the greatest video arcade games was "The House of The Dead" and the excitement of shooting your way out to stay alive was intense! It is good to see hot video games turning into movies, such as Resident Evil and Silent Hill. One movie in particular has a powerful gory twist, when it comes to game playing. The new movie "Stay Alive" will take you to a whole new level of gaming, if you can stay alive! Do you like creepy video games where your life is on the line?It was just a matter of time before a movie came out that took you into the game world for real! Think of the last game that you played and be glad you did not die in reality. Imagine the pressure of a video game pushing you to win, or you will end in a bloody death! Sounds like fun until you see some red eyes coming out of the darkness to steal your soul!"Stay Alive" starts out as an interesting game, but there should have been a clear warning, when you have to chant something! The chant in the movie opens up a portal for the main killer of the game to take your life. Once in the game you can use roses to stop the attacker, but you have to be quick.The killer in the game is a mysterious lady who does not think twice about running you over with a horse and carriage. She does not wince at stabbing large scissors in your neck. You have to feel badly for the people who first play this game, because they never had a chance to see what was coming. Only the people playing later on can put the pieces of the puzzle together. It is after seeing one person die after another, that the cast of "Stay Alive" gets serious.This movie has a strong Gothic touch and the mysterious lady killer in the game loves blood. You will get a sense of a vampire blood lust in this movie. Hutch O'Neill(Jon Foster) decides to go to a plantation that is exactly like the one in the video game. While at the plantation he finds a rude awakening. The plantation is not only just like the game, but the master of the house has been killed.The small group that remains has gathered knowledge about the twisted and sick lady killer in the game. They find out she is kept alive by draining and soaking her body in young girls blood. The trick is getting to the tower that holds her body and killing her. The one way they can kill her is by using nails, but even that ultimately fails. I will let you find out what really kills the Lady of Blood by watching the movie.Swink Sylvania(Frankie Muiz) plays a geek who cannot shut his mouth, but has a greater understanding of what is going on then anyone else. Swink Sylvania(Frankie Muiz) turns out to be a very important person in this movie, and without him things would have been gory for the two still alive. The movie will give you a sense of 'Hell Raiser' meets the demon eyed blood lady.The movie really was not that bad and the story line was interesting, for a creepy video game come to life! Video games have gained so much popularity and it is easy to get caught up in the game. Once you start playing, time goes by so fast and you forget what is going on around you. Video games are a nice escape from reality, just as long as no one gets killed!The next time you are in the video store, take a good look at what is on the shelf. Will you be playing some Madden football or will you be fighting for your life in the streets? Maybe that one creepy video game you see has been calling your name! Either way, it is fun for a bunch of friends to bring over their video game consoles and see who comes out the winner.Remember with "Stay Alive", you die in the game, then you die for real!
Netizens' Self Photographing Tutorial Reveals the Secret of "self Photographing Artifact" to Create
Netizens' Self Photographing Tutorial Reveals the Secret of "self Photographing Artifact" to Create
According to unofficial data, there are nine houses for ten beauties, but even beauties who don't clean up their appearance on weekdays may be an ordinary passer-by. So the question is, where did the high-value and high-quality house girls in the circle of friends take pictures of themselves? A netizen with no lower limit of brain hole exposed the super practical "secret script of dead house self photographing" with a video. It is no longer a secret how otaku people take high force self photographing. Since mom gave us such a beautiful birth, don't let the "house" attribute hinder us from drying our faces! Learn from the teacher of Octopus burning!Today, I took a selfie at home. I'll take a picture after I have agreed on the theme. When Xiaobai heard about the selfie, she trembled. "You have to think about the theme before you take a picture? I choose to quit! In fact, it's very simple. Take chestnuts for example," girls at home everyday "is a simple but meaningful theme." at home "and" everyday " How to behave? Take out your housewife's killer mace! Lie on the sofa with an armrest, read on the desk, fall asleep, or tidy your hair in front of the mirror... Don't be ashamed. Although you show your fresh and refined details, you can even use the "smiling face capture" brought by Huawei nova2plus Function, as long as you smile at the camera, the system can automatically recognize and start the shutter to complete the self photographing. Most importantly, with the "smiling face capture" function, you can disguise the "self photographing" as "other photographing", so that the daily detail close-up of leisure girls seems to be made by the photographer, which is no one.Smiling face capture function settingsSince life is self photographing, connect the "Earth atmosphere". No matter smiling or dazing, naturally showing emotions in the home environment will always be pleasing. For example, cutting fruit in the kitchen, watering flowers on the balcony, making tea in the living room... These elegant but not artificial life scenes really make male gods want to marry you home. Self photographing Xiaobai are in a hurry again, "Hey, hey, don't you talk about self photographing today? Let others help you take these photos". Don't worry about the "self photographing artifact" when it's urgent! You can use the "voice controlled self photographing" function of Huawei Nova 2 plus, set the pose and shout casually, and the system will help you capture the beautiful moment when it receives the signal. As for what to shout, Xiaobian's conscience suggests calling "I'm the most beautiful" "I'm a goddess" or something. Of course, no one will stop you if you want to shout the slogan "high selfie love selfie" in Huawei Nova 2 series.Some netizens are very confident in their appearance and say, "since it's a selfie, I just want to show my face! I'm not interested in anything else except facial close-up!" calm down. "Selfie artifact" is always your best "shot" file. Now I'll teach you how to take "facial close-up" It's impeccable. Turn on the Huawei nova2plus front portrait mode. After using the background virtualization function, the ordinary self photographing becomes an art photo, forcing you to immediately up several levels. You can also further choose the Huawei nova2plus's own filter. You can freely switch between various styles such as forest, fashion, cleverness and elegance.Otaku, after today's "secrets of dead house selfie" class, do you have a better understanding of Huawei nova2 series with front 20 million and rear dual photography? Huawei nova2 series never stop in the matter of painting beauty, so that your beauty house can reach a new height!
Are Hairy Legs Unattractive to Girls/women?
Are Hairy Legs Unattractive to Girls/women?
No, not at all. Hairy legs on a guy are actually very sexy1. Some questions about my period for girls/women? Please answer!?a) every 2 to 3 hours. b) just qo in the bathroom and chanqe em, and make sure that you dispose of them properlyy. c) yess, i was 11 when i startedd mine. d) sometimes you miqht qet cramps, mood swinqs, you miqht qet hunqryy like all the time lol ( candyy helps alot ), and you qet sleepy alot ..2. Are there any girls/women here that like to get dirty?yes..I love power tools..I used to work on cars (but can not now due to allergies). But I still like wood working...I wired 6 concrete Asian lanterns for light. (and then a whole bunch of people tried to copy me. ...hahahaha. ..did not work. ) I paint the inside of my house. I do plumbing and 'light' wiring. (changing light fixtures, thermostats, etc) I have my own power washer...(I live in a brick house and it needs cleaning all the time. ..it's white. .).3. Girls/Women only: What type of guy would you rather date?Do not compare yourself to the otehr guys that a girl dates. I personally have dated and loved all three of these types of guys. Just think about the fact that you two were not meant to be, and that is that. Otherwise you will be dwelling on it and NO girl finds that attractive4. poll :girls and women do you wear makeup everyday to work, school, college classes?Yes I do as I love makeup! I wear MAC primer and foundation and avon usually for mascara and eyeliners etc. The only time I dont is in the day when on holiday or when im swimming!5. bra question for other girls/women!?I think theres a brand that came out with halves in bra sizes like B 38 1/2 you know? They are around someone try thoses6. Who sells cheap swimwear for girls / women? Cute bikinis, but cheap?Wet seal, wal-mart, and delias7. Girls...women..females. I need advice. READ IT ALL.? HELP?First of what I read from you is a lot of red flags in your sentences. The biggest problem about yourself is not your weight or something alike. It's your negative thinking in each sentence. Think how you look from a side when you are always thinking about yourself. Your body must be collapsed, you do not look self-confident about yourself, you feel afraid because you are afraid what each woman may think of you at the meeting and etc. STOP! First what you need to change is your thoughts. You need to learn think possitively. And it's no joke. You may think that it's a joke, but it's not. It's a really hard task for you and you even do not understand it yet. I am sure that even know you are trying to think negatively "Oh, what is she talking about? How can I look nice, if I am not?!" This is a really hard task for you if you want to find a girlfriend and have a serious relationship - try to catch each of your negative thought and fastly change it to positive! It's not a one day task. You do not need any advice about dating. When you learn how to think positively, your body will talk itself "Hey, here I am , I am self confidence and happy man. I am looking good for myself, also I am very interesting person. So if you want to know me better, let's talk!" Women like self-confident men. And if it would be true that heavy men can hardly find a real love, they all would be singles! :) But they are not. Remember, women like men, who are self-confident and happy for who they are and how they look (even if they are made a mistake choosing a wrong shoes or speech) :).8. Are you more physically attracted to young-looking girls/women or more mature-looking girls/women?My standards are the same. If she looks good & has a big butt she's ok with me9. Girls/Women What Guy would you rather have?10?Really either one as long as they had good personalitys
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