Visible Light Communication Essay

The documentary Visions of Light was made for the purpose of showing the art of cinematography. Cinematography was defined throughout the film as the making of a motion picture. “I found out that I was unconsciously responding to light.” said by Ernest Dickerson an American film director and cinematographer. Light is thought of to be something so little but means so much in a film. It is used to change the emotion and to tell people where to look.

communicating over. It could be a modem, a network card, a radio transmitter, or a router.

In class we are reading a book called “The Lighting Thief “by Rick Riordan. There are two characters named Clarisse and Nancy that have many comparisons. They both want him out of their lives, they have different personality that are sometimes similar, and they also have different ideas of what to do to him.

You want to know how the world really is lit up? Well thank a Lighting Technician for that. Lighting Technicians are in charge of setting up, adjusting, fixing, and programing lights for either one show or multiple at a time. Lighting Techs can spend countless hours doing one of these task at a time, along with helping out the other fields of theatre technicians like creating sets, helping with sound, and or stage managing. They also work in different areas such as professional stages, ameature stages, concert stages, and film and tv sets.

More specifically, a sensor is "a device that responds to phenomena, such as light, pressure, or heat, and generates a signal that can be measured or interpreted" [16]. The sensor network community often defines a sensor node as a wireless device which is small, capable of responding to one or several stimuli, processing the data and transmitting the information over a short distance using a radio link. Sensor nodes contain electronic circuits for minimizing power consumption [17]. Sensors are for measuring sound, light and temperature that is typically thought. However, sensors can measure other variables, such as vibrations or electromagnetic fields [18]. Sensor transmits values wirelessly to one or several BSs

The military uses visible light to communicate. For them to communicate they send information and receive it. They use a code made up of a series of flickering lights. They have opened up new possibilities. This is kinda like morse code almost. They flicker the lights in a pattern and the person on the other end can understand what's going on.

Perhaps the greatest advantage of wireless networks is the freedom from physical cabling. Laptop users can finally use their machines as they were intended; away from a desk. Unfortunately, wireless LAN standards (IEEE 802.11) are considerably slower than their wired counterparts. 802.11a wireless is capable of speeds up to 72Mbps; however, it is currently restricted to a throughput of 54Mbps by the FCC.

Digital photography was the reason for the graphics editing software such as Adobe Photoshop were developed, and has changed the way people take pictures. The digital camera has been in development since George Smith and Willard Boyle invented the charged-coupled device (CCD) which is an image sensor. The original intended function of the CCD was to be the new semi-conductor memory for computers. By 1975 image quality improved greatly and was able to be broadcasted over television. Since then cameras have improved eminently through the years, progressively advancing and functioning more dynamically. A digital image is a long string of 1s and 0s that represent all the pixels in an image. Just as with film cameras, the image that is recorded is visible light or flash. When the light bounces off the subject and is captured in the camera, it breaks into light patterns and is converted into a series of pixel values. The light is then converted into electric charges which are then used by the CCD or CMOS (Complementary Metal Oxide Semiconductor) to record images.

A dim light scene enters the lens at the front. The light is made of photons. An image intensifier night vision device is an optical device that does exactly what you would think from the name. It takes available light and intensifies it.

The questions of who we are and where we belong are for many questions of big significance. In a world with multiple choices and expectations the individuals are left to themselves. Where do we find a sense of belonging, and how do we attain individual satisfaction and joy? In the short story, “Lightbox”, from 2015, written by Emma Clearly, an unnamed protagonist is struggling with his relationship with the recognized Elsie. We are led to believe that he is close with Elsie, but this may not be where he belongs.

Introduction The Quantum Theory was the second of two theories which drastically changed the way we look at our physical world today, the first being Einstein’s Theory of Relativity. Although both theories revolutionized the world of physics, the Quantum Theory required a period of over three decades to develop, while the Special Theory of Relativity was created in a single year. The development of the Quantum Theory began in 1887 when a German physicist, Heinrich Hertz, was testing Maxwell’s Theory of Electromagnetic Waves.

This report will discuss the advantages, disadvantages and details of both natural daylight and artificial lighting systems in terms of developing within a commercial property. The report provides detailed research and analysis concerning the subject topic in order to give a comprehensive view of various lighting types and methods. Light is an electromagnetic radiation visible to the human eye, the wavelengths visible to humans range between 380nm (nanometers) to 740nm. Light behaves as a wave - it undergoes reflection, refraction, and diffraction just like any wave would.

Electricity is one of the greatest inventions of human which makes an impactful change in technology. Electricity is essential component to modern technology. Many countries across globe are facing shortage of electricity during peak times. Still in some countries many people living their lives in dark. It’s better to reduce the consumption of electricity rather than producing with expensive methods. To reduce consumption of electricity, LED technology is one of the effective and globally accepted technologies. The major consumption of electricity is due to lighting equipment, LED technology in lighting system can reduce the consumption of electricity. LED technology in lighting system can gives the great efficiency with lower power consumption.

RECEIVER SECTION:- This section is worked as a Flip-flop (Bistable). IC-3 is decade counter, its Pin No.14 is input and Pin No. 2 output. The output of frequency detector stage is used, via a flip-flop, to switch ‘ON’ or switch ‘OFF’ a LED alternately. The receiver uses infrared modules IR-signal from the transmitter is sensed by the sensor through and its output PIN 1 goes low and switched LED. IC-3 is worked on clock pulse which receives to infrared modules at Pin No. 14. Its output at Pin No 2 throughes high.

Light enters one end of the fiber from a light bulb, laser, or some other source, and travels essentially unimpeded all the way to the length of the fiber where it is intercepted by a photosensitive detector such as an electronic device or even the human eye. The distance of travel varies according to the use to anywhere from just a few inches to over one-hundred and fifty miles. Fiber optic cable can transmit large amounts of information over one-hundred and fifty miles almost instantaneously. “While it takes five hours to transmit the contents of an encyclopedia over copper wires, the entire work can be transmitted in less than a minute over fiber optics” (Yawn PG).