Light-emitting diode

Any student who takes an introductory biology class knows that humans create more waste than every other species combined. Much of this waste stems from our selfish over utilization of the resources found here on earth. Results of this can been seen during the BP oil spill scandal. However, waste production occurs even in beneficial establishments like hospitals. Waste is produced in hospitals in multiple areas, such as the cafeteria, used medical tools and toxic materials produced by operations…

blue LED light that tricks the brain into staying awake longer. The brain produces a chemical hormone called melatonin that prepares the body for sleep. The light from the screen however throw a person’s internal clock off and make them stay awake. Why does the blue light keep people up? A study in 2002 found that light signals in our eyes are converted into neural signals, which are more sensitive to short wave light, like the blue light. Red light is the longest on the spectrum. LED lights are…

transmission car. They are many different types of display used in vehicles. The first is vacuum fluorescent, which uses tubes that are filled with argon or neon gases and when electrical current passes through the tubes it creates a bright and durable light.…

Visible Light Communication – Tomorrow’s Technology YASHODHA J K NITHYASHREE N Weir EnSci, Bengaluru Weir EnSci, Bengaluru yashodhajk@gmail.com Nithyashree0292@gmail.com Abstract-The Visible Light Communication (VLC) is an emerging technology, which provides distinct facilities such as fast data communication, secure data communication, high data rate wireless communication, etc. Instead of radio frequency, VLC uses light, to transfer data. The visible light spectrum is unlicensed…

connected to Arduino board. This was done by calibrate part by part which is started with LDR sensor, then PIR sensor and lastly LED as light module. During day, all LEDs and PIR sensor is turned off. This condition is shown in Figure-10. Figure-9. Prototype of proposed design project Figure-10. Condition during day During night, whereby LDR sensor detects light intensity, 4 LEDs at the junction will turned on. This is called as Mode 1. Figure-11 shows the…

sources of lighting through the scene other than the typical three point lighting, and those come from the flashlight and the shed. The flashlight at the first shot of the scene is easy to recognize and a light through the middle of the frame, and it is a unique aspect of the scene. This source of light is especially important at the end of the scene when Elliot uses the flashlight to see what mysterious object ET dropped in front of him, and it helps the audience see the texture and nature of…

realize the proposed converter, due to its resistive behavior when conducting. With the intention to simplify the analysis, it was assumed the current, independent of the direction, always will be conducted by the MOSFET channel, instead of the body diode. The MOSFET on-resistance is the only parasitic resistance considered in this analysis. However, all resistances in the loop (e.g. equivalent series resistance (ESR) of the capacitors and trace resistance) will assist the capacitor switching.…

Lifestyle Change Project For the lifestyle change project, I chose to reduce my energy consumption. The primary reason for choosing this was to save money. Energy consumption was one aspect of the environment that had not paid much attention to. This change is also universal. Anyone can make a conscious effort to reduce his or her electricity consumption. It essentially requires awareness to the issue. Electricity use has “environmental implications, a reduction in electricity use by any means…

I. Science Fair Question What is the speed of light in gelatin? II. Background Research Did you ever wonder how the speed of light is measured? This paper will discuss how the speed of light is measured. The terms that will discussed in this paper are the law of refraction, trajectory, Snell’s Law, and the index of refraction. Snell’s Law gives the relationship between angles of incidence and refraction for a wave impinging on an interface between two media with…

Semiconductor devices have transformed the way that we live by making tasks easier and more efficient than before. By utilizing the opinions of different professionals in the field about their affect on society, I want to investigate the different aspects of semiconductor devices. The question of will the accumulation of both the positive and negative outputs of the semiconductor industry lead to the need of advancing technology that is independent of the semiconductor. This is important to me…