If Camera Lenses are Round, Why are the Pictures Rectangular?

If Camera Lenses are Round, Why are the Pictures Rectangular?

Electronics
Its a bright and sunny day, most probably you and your friends are heading out to the sea and possibly one among your friends is a photographer who goes out taking a lot of pictures of you and the nature. Suddenly out of the bloom from the crowd, comes this kid and asks them, "If the camera lenses are round, how come the pictures are rectangular?"  Now the real fun begins, none of the grown up adults know or probably few of us know about it but no one among the gang of friends knew about this, probably not even the photographer. So for all those of you I thought I will explain you about the technology behind it. Its quite obvious from the structure of a camera that the…
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Silicon Photonics – New Era of Chip Design

Silicon Photonics – New Era of Chip Design

Electronics
Ever heard about Photonics? Photonics is the process of generation, emission, transmission and various processes that deals with light. It is the next generation of chip processing that will be much efficient, low power consuming, higher bandwidth and smaller the size of components involved. Though it is still in the research level and not yet ready for a commercial process, photonics still stand for the future. Silicon Photonics is one of the fast growing research area in this topic and IBM has claimed to have advanced the technology a significant step by integrating a silicon photonic chip on the same package as a CPU. With the need for much faster computing process, silicon photonics could help us scale to exascale computing operations. Bert Offrein, manager of the Photonics group at IBM…
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CoeLux : New Way of bringing Sunlight to Home’s

CoeLux : New Way of bringing Sunlight to Home’s

Electronics
There are many researchers in the world who has tried to replicate the sun's light and eventually failed only by 400,000 miles. We are now in the era of technology and this new Italian Start up company called the CoeLux has invented a new technology by its name incorporating Nano technology and the power of conventional LED's to replicate Sunlight. CoeLux fixtures use traditional LEDs, calibrated to the same wavelengths as the sun. However, accurately recreating sunlight also requires mimicking subtle variations caused by the atmosphere, which varies in thickness and composition depending upon where you are on earth. CoeLux uses a milimeters-thick layer of plastic, peppered with nanoparticles, that does essentially the same thing in your living room. CoeLux’s inventor, Professor Paolo Di Trapani hasn’t made any disclosures about how the…
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Optical Interconnects – VCSEL’s

Optical Interconnects – VCSEL’s

Electronics
VCSELS - This is one of Surface Emitting lasers where in the light is emitted in a direction perpendicular to the active region. When we speak of optical interconnect, light source is one of the important thing to be kept in mind as they constitute the essential part in an optical Circuit. VCSEL's pronounced as (VIXEL) is one such light source which emits light vertically and because of this fact more number of lasers can be fit in single 3" Wafer. The best part about the VCSEL is that it can be tested at the wafer form itself thus eliminating the further manufacturing process if in case the design structure went wrong. The structure of a VCSEL is as follows. A pair of Bragg Mirror act as a reflectors which…
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4K Television Set/ Ultra HD Television/3d Television

4K Television Set/ Ultra HD Television/3d Television

Electronics
Its the latest among all the techie person or the electronic gadget lovers, big screen tv with a huge price tag on top of it - yeah am talking about the "New hero" in town the 4K TV's and the UHD TV's. I thought I will explain you clearly the differences and explain you what the big buzz is all about. WHAT IS 4K TV's? 4K Ultra HD TVs (also known as UHD TVs) deliver four times as much detail as 1080p Full HD — that's eight million pixels compared to two million pixels. What that means in terms of potential image clarity is more fine detail, greater texture and an almost photographic emulsion of smoothness. But this is just for starters. Prior to a roll-out of TV services, broadcasters…
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Fiber-optic Communication Versus Electrical Communication

Fiber-optic Communication Versus Electrical Communication

Electronics
.Greetings people and today the topic of discussion is the comparison of Fiber optic communication and Electrical Communication. What is Fiber Optic Communication: Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber. Creating the optical signal involving the use of a transmitter, relaying the signal along the fiber, ensuring that the signal does not become too distorted or weak, receiving the optical signal, and converting it into an electrical signal. What is Electrical Communication: Electrical Transmission is the transmission of Information by converting it to Electrical Voltage signal and transmitting it. In a communication system, a transmitter encodes a message into a signal, which is carried to a receiver by the communications channel. For example, the words…
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Free Space Optical Communication – Ever Wondered what this is about?

Free Space Optical Communication – Ever Wondered what this is about?

Electronics
The term "Free Space Optical Communication" is an Optical Communication technology which involves in communication using Light as the source and can be done by electronic Devices. An optical communication system uses a transmitter, which encodes a message into an optical signal, a channel, which carries the signal to its destination, and a receiver, which reproduces the message from the received optical signal. The major difference between a Normal Optical communication and Free Space Optical Communication is that in free space communication, light propagating in free space(Air,vacuum) is used to wirelessly transmit data for telecommunications or computer networking. Free-space point-to-point optical links can be implemented using infrared laser light, although low-data-rate communication over short distances is possible using LEDs. Infrared Data Association (IrDA) technology is a very simple form of…
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Flatland optics with graphene: Smaller and faster photonic devices and circuits

Flatland optics with graphene: Smaller and faster photonic devices and circuits

Electronics
[caption id="attachment_3921" align="alignleft" width="243"] Dramatically squeezed graphene-guided light can be focused and bent, following the fundamental principles of conventional optics.[/caption]Researchers from CIC nanoGUNE, in collaboration with ICFO and Graphenea, introduce a platform technology based on optical antennas for trapping and controlling light with the one-atom-thick material graphene. The experiments show that the dramatically squeezed graphene-guided light can be focused and bent, following the fundamental principles of conventional optics. The work, published yesterday in Science, opens new opportunities for smaller and faster photonic devices and circuits. Optical circuits and devices could make signal processing and computing much faster. "However, although light is very fast it needs too much space," explains Rainer Hillenbrand, Ikerbasque Professor at nanoGUNE and UPV/EHU. In fact, propagating light needs at least the space of half its wavelength,…
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Building a Better Capacitor with custom Nanorods

Building a Better Capacitor with custom Nanorods

Electronics
[caption id="attachment_3918" align="alignleft" width="300"] The non-aligned manganese dioxide nanorods on the left were made using conventional methods. The aligned nanorods on the right were grown in Dennis Desheng Meng's lab using electrophoretic deposition.[/caption]SUMMARY: A new process for growing forests of manganese dioxide nanorods may lead to the next generation of high-performance capacitors. As an energy-storage material for batteries and capacitors, manganese dioxide has a lot going for it: it's cheap, environmentally friendly and abundant. However, chemical capacitors made with manganese dioxide have lacked the power of the typical carbon-based physical capacitor. Michigan Technological University scientist Dennis Desheng Meng theorized that the situation could be improved if the manganese dioxide were made into nanorods, which are like nanotubes, only solid instead of hollow. However, a stumbling block has been making manganese…
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NIST chip that makes polarized xenon gas

NIST chip that makes polarized xenon gas

Electronics
A chip-scale device that both produces and detects a specialized gas used in biomedical analysis and medical imaging has been built and demonstrated at the National Institute of Standards and Technology (NIST). Described in Nature Communications, the new microfluidic chip produces polarized (or magnetized) xenon gas and then detects even the faintest magnetic signals from the gas. Polarized xenon -- with the atoms' nuclear "spins" aligned like bar magnets in the same direction -- can be dissolved in liquids and used to detect the presence of certain molecules. A chemical interaction with target molecules subtly alters the magnetic signal from the xenon; by detecting this change researchers can identify the molecules in a complex mixture. Polarized xenon is also used as a contrast agent to enhance images in experimental magnetic resonance…
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