WiFi Radiation

source: motherboardvice

Wi-fi. It’s all around us, quietly and invisibly powering our access to the world’s information. But few of us have a sense of what wi-fi actually is, let alone what it would look like if we could see it.

Artist Nickolay Lamm, a blogger for MyDeals.com, decided to shed some light on the subject. He created visualizations that imagine the size, shape, and color of wi-fi signals were they visible to the human eye.

“I feel that by showing what wi-fi would look like if we could see it, we’d appreciate the technology that we use everyday,” Lamm told me in an email. “A lot of us use technology without appreciating the complexity behind making it work.”

To estimate what this would look like, Lamm worked with M. Browning Vogel, Ph.D., an astrobiologist and former employee at NASA Ames. Dr. Vogel described the science behind wireless technology, and Lamm used the information to create the visualizations.

Dr. Vogel provided captions for each illustration explaining the science of wi-fi. The caption for the illustration at the top of the article describes the size of a wi-fi energy field, and how a signal is transmitted. It says:

Wifi is an energy field that is transmitted as waves. The waves have a certain height, distance between them and travel at a certain speed. The distance between wifi waves is shorter than that of radio waves and longer than that of microwaves, giving wifi a unique transmission band that can’t be interrupted by other signals. Wifi waves are about 3 to 5 inches from crest to crest. The crests of waves is translated to a 1 by a computer, and the the troughs equal a 0. Chains of 1s and 0s that can be translated into the letters, numbers and codes that make up websites, email and other internet content. Typical wifi waves decrease in amplitude as they travel further from the source which is why the waves are larger to the right and smaller to the left, assuming the source is somewhere near the right of the image. This image shows an idealized wifi data transmitted over a band that is divided into different sub-channels, which are shown in red, yellow, green and other colors.
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source: popsci

Wi-Fi is a series of invisible waves, streaming along through our houses and offices and planes. What would those waves look like if we could see them? Like these crazy exploding-rainbow images!

Well, okay, we don’t have any way of actually seeing Wi-Fi, so there’s not really a way of knowing what it would look like without speculation. But these images from Nickolay Lamm, done with help from astrophysicist M. Browning Vogel, are certainly beautiful, and pretty instructive, too. In the top image, you can see Wi-Fi waves emanating along, colored with a rainbow gradient. But Wi-Fi doesn’t just travel in a straight line, so Lamm also included the image below, showing waves emanating spherically, in pulses, from a source. “Wifi fields are usually spherical (like the one here) or ellipsoidal and extend about 20-30 meters, assuming a typical off the shelf wifi box,” Lamm writes at My Deals, where the images first appeared.
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source: fastcoexist

Even though Wi-Fi is invisible, we know when it’s not working. Some people have even developed a bat-like sense of guessing where the signal is strongest and moving their laptops to that specific coffee shop table. But artist and researcher Nickolay Lamm wanted to know: what would Wi-Fi look like if we could see those waves pulsing the network to our computers? “I did a Google search that asked, ‘What if we could see Wi-Fi?’ and I couldn’t find anything, so I decided to make my own,” Lamm says.

That search eventually produced these images of what Wi-Fi would look like on the National Mall, which Lamm posted on MyDeals.com. With the help of a NASA astrobiologist, Lamm used 3-D shapes taken from a Washington, D.C. government map to recreate the size and frequency of the waves. As for the NASA connection, Lamm explains that he simply put out a call for help on Craigslist. M. Browning Vogel, an astrobiology Ph.D. who worked at NASA Ames for five years, helped Lamm out. “She provided all the details. I made sure that she approved of the images, and essentially what happened is that she guided me through the whole illustrated process to make sure they were scientifically accurate as possible,” Lamm says.

Vogel explains that Wi-Fi is an energy field with a frequency shorter than radio waves but longer than microwaves. Wi-Fi waves are about three to five inches between crests, which a computer reads as “1.” (The troughs of the wave are read as “0.”) That information then translates into the chains of binary code that dictate the Internet. Lamm and Vogel decided to use red, orange, and yellow to show the distinct Wi-Fi channels, or segments, that make up a spherical field, which can reach 20 to 30 meters from a typical Wi-Fi box.

Wi-Fi routers can attach almost anywhere–buildings, lamp posts, trees, or anything else that allows the signal to radiate outward, Vogel writes. Trees or buildings can obstruct the waves, on the other hand, which is why multiple routers were used to create a field across the entire National Mall.

This isn’t the first time that Lamm has translated his own scientific curiosity into easily digested, and often viral, images. This past month, Lamm reconstructed a Barbie doll with “lifelike” proportions. He also recently visualized what New York City, and other cities, would look like underwater.

“Internet people like myself, they want to get the most information in the least amount of time, and I feel when you combine images with scientific research it’s really interesting,” Lamm says. “I try to make images that people have never seen before. All you need is your own creativity and a new perspective on things.”
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source: financeqq

这张照片显示的是Wi-Fi信号强度如何随着距离增加而减弱（右侧振幅大的地方是信号源）。Lamm和Vogel说这张照片“显示的是理想化的Wi-Fi信号在分成若干子频道的波段上传输的情况，通过红色、黄色、绿色和其他颜色显示。” 路由器和电脑以波的形式发射和接收数据时，之间有3至5英寸的距离。Lamm and Vogel说“Wi-Fi脉冲在这里用不同颜色区别，以右侧的数据源为中心形成不同的辐射层。”一个“普通的”Wi-Fi场应该是典型的球形，传播距离大概在65到100英尺。
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source: ljudochbildde

Nickolay Lamm, en skribent på MyDeals, har tillsammans med forskaren M Browning Vogel samlat ihop information om områden med wifi-täckning runt det största köpcentrat i den amerikanska staden Washington och illustrerat hur vågorna ser ut ovanpå riktiga bilder. Resultatet är fem vackra bilder som visar hur trådlösa nätverk sprider sig runt omkring oss. Wifi-signalerna överförs som ett band som delas in i underkanaler, på bilden syns de bland annat som röda, gula och gröna vågor.

Wifi-pulserna visas här med flerfärgade sfärer som strålar ut från källan till höger i bild. Nätverksvågorna vandrar genom luften som snabba pulser med datakoder. Ett fruset ögonblick visar att de är ungefär 15 cm från varandra.
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source: youtechit

Cosa succede quando un artista e un’astrobiologa uniscono le forze per mostrare l’invisibile? Il risultato lo vedete nella gallery qua sotto: come sarebbe il mondo se le onde del Wi-Fi fossero visibili. E’ l’interessante esperimento di Nickolay Lamm, aiutato dalla Dottoressa M. Browning Vogel, per l’appunto astrobiologa che ha lavorato cinque anni alla NASA per poi diventare professoressa universitaria.

Nickolay, sulla sua pagina, descrive che aspetto avrebbe il Wi-Fi: “viaggia attraverso lo spazio come rapide onde di dati codificati. Uno “scatto congelato” mostrerebbe delle onde a 16 centimetri l’una dall’altra. I router Wi-Fi sono in pratica delle antenne che trasmettono dati in frequenze diverse allo stesso tempo. Queste frequenze sono mostrate (nelle foto) in blu, verde, giallo e rosso, colori che pervadono lo spazio”

L’autore ha scelto di “mostrare” come si vedrebbe il Wi-Fi del National Mall di Washington, l’enorme area aperta nella capitale americana che va dal monumento a Lincoln al Campidoglio. Il risultato è spettacolare.
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source: elpais

El artista Nickolay Lamm se preguntó cómo se vería el mundo si nuestros ojos fueran capaces de captar esas ondas de radio, y creó una serie de imágenes con la ayuda de la astrobióloga M. Browning Vogel, eligiendo los colores para marcar las diferencias entre los varios canales que usa una antena para transmitir datos.

El Wi-Fi es una tecnología inalámbrica que está cada vez más difundida; este estándar para conectar múltiples dispositivos sin usar cables (y eventualmente acceder a Internet si uno de ellos provee este servicio funcionando de router) está en los hogares, las oficinas, los restaurantes, hoteles y muchos lugares más.

El artista Nickolay Lamm se preguntó cómo se vería el mundo si nuestros ojos fueran capaces de captar esas ondas de radio, y creó una serie de imágenes con la ayuda de la astrobióloga M. Browning Vogel, eligiendo los colores para marcar las diferencias entre los varios canales que usa una antena para transmitir datos, graficar la onda (más pequeña que la de radio, más grande que una microonda) y el área de cobertura (circular o elíptico, en general).

En su blog ofrece información más detallada sobre su creación. Lamm ya había tenido notoriedad por crear una serie de muñecas Barbie pero usando las medidas de chicas normales o cómo sería la vista de Nueva York en otros planetas.
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source: pcgameshardwarede

Wie sieht ein sichtbares Funknetz aus? Mit dieser Frage haben sich die Astrobiologin Dr. M. Browning Vogel und der Künstler Nickolay Lamm beschäftigt und in einem Blog-Eintrag auf mydeals.com einige interessante Fotomontagen zur Veranschaulichung hervorgebracht. Demnach würden man die Umwelt in ein Meer aus Transversalwellen getaucht sehen, wenn denn das menschliche Auge dazu in der Lage wäre, die Signale in einem WLAN zu sehen. Die aufschlussreichen Bilder finden Sie unterhalb dieser Zeilen in der Galerie.
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source: datalink

Υπάρχει. Το χρησιμοποιούμε. Συνδέουμε τις «έξυπνες» συσκευές μας οι οποίες μας οι οποίες μας ειδοποιούν κάθε φορά που είναι κάποιο διαθέσιμο. Μπορεί να μην υπάρχουν σε όλες τις περιοχές και να θέλαμε να υπήρχαν περισσότερα για να είμαστε συνέχεια συνδεδεμένοι αν το θέλαμε, αλλά υπάρχουν. Μιλάμε για τα Wi-Fi, την δημοφιλή τεχνολογία που επιτρέπει στις συσκευές μας να ανταλλάσσουν δεδομένα ασύρματα και ακολουθούν τα πρότυπα 802.11 τουIEEE, του Ινστιτούτου Ηλεκτρολόγων και Ηλεκτρονικών Μηχανικών και της συμμαχίας που συστήθηκε προκειμένου να ακολουθηθεί αυτό το ενιαίο πρότυπο. Πού είναι όμως; Βλέπουμε ταrouter, βλέπουμε ότι οι συσκευές μας συνδέεονται, αλλά το σήμα τους;; Πώς θα ο κόσμος αν μπορούσαμε να το δούμε; Κάπως έτσι.

Τα Wi-Fi είναι ενεργειακά πεδία που μεταδίδονται ως κύματα. Τα κύματα αυτά έχουν συγκεκριμένο ύψος, απόσταση μεταξύ τους και ταξιδεύουν με συγκεκριμένη ταχύτητα. Τα κύματα του Wi-Fi έχουν μικρότερη απόσταση μεταξύ τους από τα ραδιοκύματα και μεγαλύτερη από τα μικροκύματα και αυτή η ιδιότητα τα κάνει να παραμένουν ανεπηρέαστα από οποιαδήποτε άλλα σήματα.

Οι αναμεταδότες Wi-Fi είναι ουσιαστικά κεραίες που είναι εξοπλισμένες με ένα πρωτόκολλο μετάδοσης που μοιράζει το φάσμα της συχνότητας σε τομείς που ονομάζονται κανάλια. Τα δεδομένα μεταδίδονται μέσω του κάθε καναλιού. Στη φωτογραφία βλέπετε ε διαφορετικό χρώμα το κάθε κανάλι. Η έκταση κάθε Wi-Fi πεδίου, ανάλογα με το είδος του εξοπλισμού που χρησιμοποιούμε, μπορεί να φτάνει τα 20-30 μέτρα και τα πεδία είναι είτε σφαιρικά, είτεελλειψοειδή. Φυσικά, διάφορα αντικείμενα στον εξωτερικό χώρο, όπως τα δέντρα, παρεμποδίζουν τα σήματα του Wi-Fi. Ένα router ή μία κεραία αναμετάδοσης που τοποθετείται σε εξωτερικό χώρο, μπορεί να μεταδώσει το σήμα της, μέχρι και 100 μέτρα περιφερειακά από το σημείο που είναι τοποθετημένη. Οι φωτογραφίες που βλέπετε είναι μία γραφική απεικόνιση που έκανε ο Nickolay Lamm σε συνεργασία με την αστροβιολόγο M. Browning Vogel και χρησιμοποίησαν την γνώση του για την λειτουργία των Wi-Fi ώστε να την συνδυάσουν με τις φωτογραφίες που πήραν από την περιοχή του Capitol, στη Washington των ΗΠΑ. Φανταστείτε πόσο LSD θα ήταν ο τρόπος που βλέπουμε τον κόσμο, αν μπορούσαμε πραγματικά να δούμε τα Wi-Fi στις πόλεις που κυκλοφορούμε. Και σκεφτείτε επίσης τι μας διαπερνά όταν βρισκόμαστε σε μία πλατεία όπως αυτή του Συντάγματος, ή την Trafalgar στο Λονδίνο, όπου υπάρχουν πολλαπλά Wi-Fi, κεραίες κινητής και άλλα ηλεκτρομαγνητικά πεδία. Αν μπορούσαμε να βλέπαμε όλα αυτά, αμφιβάλλουμε αν θα μπορούσαμε να δούμε τα κτίρια που υπάρχουν γύρω μας. Εκπληκτική δουλειά.

Μπορείτε να μάθετε περισσότερα για την συγκεκριμένη εργασία ή να ζητήσετε τις φωτογραφίες σε υψηλή ανάλυση από τον Nickolay Lamm εδώ, και αν θέλετε να διαβάσετε περισσότερα για τον τρόπο με τον οποίο λειτουργούν τα Wi-Fi, στο λήμμα της Wikipedia, εδώ.
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source: newsecoincomvn

Với anh em Tinh tế thì Wi-Fi là một thứ không có gì xa lạ, và nó đóng một vai trò khá là quan trọng trong cuộc sống của chúng ta. Chúng ta hay nói về Wi-Fi, nhưng chúng ta chỉ có thể thấy được những cái router, chứ không bao giờ thấy sóng Wi-Fi. Vậy nếu giả sử chúng ta có thể thấy được sóng Wi-Fi trong môi trường xung quanh, thì nó sẽ trông như thế nào?

Hai nhà nghiên cứu Nickolay Lamm và tiến sĩ M. Browning Vogel đã làm việc cùng nhau để thu thập số liệu về độ phủ Wi-Fi ở National Mall, thuộc Washington D.C., và họ đã chồng ghép các số liệu đó lại thành những hình ảnh thật sự. Kết quả là họ thu được 5 bức ảnh minh hoạ tuyệt đẹp, cho chúng ta thấy cách Wi-Fi được truyền đi trong không trung và các nó làm việc trong thế giới thật. Bức ảnh này cho thấy một luồng sóng Wi-Fi điển hình truyền đi trên một băng tầng được chia thành nhiều kênh nhỏ, được thể hiện bằng màu đỏ, vàng, xanh lá và các màu khác. Bức ảnh này cho thấy các xung nhịp Wi-Fi là những quả cầu nhiều màu sắc phát ra từ nguồn nằm ở sát góc phải tấm ảnh. Sóng Wi-Fi phủ đầy trên không trung và di chuyển dưới dạng các xung nhịp dữ liệu mã hoá. Khi “đóng băng” một khung ảnh có các xung nhịp cho thấy chúng cách nhau khoảng 6 inch, khoảng 15cm (thể hiện bởi các dải màu nhạt di chuyển trong không trung trong bức ảnh này). Dữ liệu được truyền đi tức thời trên nhiều tần số khác nhau từ ăng-ten Wi-Fi như là các vùng màu xanh, màu chàm và vàng.
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source: ebuzzcokr

여기 그렇게 사람들이 궁금해하는 와이파이 신호의 모습이 있습니다. 실제로는 눈에 보일리 없지만 이론에 기초해 와이파이의 주파수가 어떤 식으로 세상을 채우고 있는지 보여주는 이미지인데요. 닥터 M. Browning Vogel과 아티스트 Nickolay Lamm이 함께 만든 이 이미지 속에서는 눈에 보이지 않는 와이파이 신호의 모습이 담겨 있는데요. 구형으로 펼쳐진 와이파이 신호의 모습이 흡사 어린시절 봤던 우주선의 보호막 같은 느낌이 나네요. 어디까지나 이해를 돕기 위한 이미지이니 실제로는 저것과 물론 다룰 수 있겠지만 미국이 저정도면 우리나라는 훨씬 촘촘하지 않을까 싶네요.