pollution. Earth’s atmosphere contains mostly water vapor‚ carbon dioxide‚ and methane (natural greenhouse gases) which act to keep the lower layers of the atmosphere warmer than they otherwise would be without those gases. Greenhouse gases trap infrared radiation. The radiant heat energy that the Earth naturally emits to outer space in response to solar heating. Mankind’s burning of fossil fuels releases carbon dioxide into the atmosphere and this is believed to be enhancing the Earth’s natural
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shape of the crystals will differ for each specific drug. 5. What is spectrophotometry? How can this useful in identifying drugs? A spectrophotometry device can emit both UV and infrared light as it measures how a sample either reflects or absorbs. Though ultraviolet spectrophotometry cannot identify a drug‚ infrared spectrophotometry can‚ since the pattern of light is unique to each type of compound. 6. Why are forensic scientists an important part of drugs cases? forensic scientists can use
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CHAPTER 1 INTRODUCTION The rapid development in science and technology has paved its way for sophistication by automation. People now a days‚ are inclined towards devices that are sophisticated‚ simpler to use and secure. In this project entitled “Home Appliances Control using Different Controlling Modes “‚ a prototype is developed which shows how the best utilization of technology can be made in order to secure a home not only from threat but also by ensuring all the safety measures. The
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describe the different lasers and IPL systems that are in the industry today. Include Alexandrite‚ Rudy‚ Diode‚ Nd: Yag (lasers)‚ Intense Pulsed Light and Light Heat Energy (broadband spectrum systems) Alexandrite – absorbed by melanin‚ is (near infrared) is most effective when used on pale skin and isn’t safe to use on darker skin. It is 755nm visible light wave length. It has a pulsed driod array of 810 nm for pale to medium skin types. Alexandrite has an observed colour change from green to red
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In the story “Veldt” by Ray Bradbury‚ The parents‚ George and Lydia‚ (Who were expatriate) are to blame for their own deaths because they are the ones who let the kids (Peter and Wendy) be addicted‚ instead of minimizing the use of all the technology in their home. In the beginning of the story George and Lydia bought a smart house‚ so the machines could accomplish all their multiple chores for them. George and Lydia bought a VR house so that they didn’t have to do anything for their kids. This
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INTERNATIONAL JOURNAL OF BIOMEDICAL SCIENCES VOLUME 2 NUMBER 3 2007 ISSN 1306-1216 Biometric Authentication Using Fast Correlation of Near Infrared Hand Vein Patterns Mohamed Shahin‚ Ahmed Badawi‚ and Mohamed Kamel behavioral categories. Common physiological biometrics include face‚ eye (retina or iris)‚ finger (fingertip‚ thumb‚ finger length or pattern)‚ palm (print or topography)‚ and geometry‚ back of the hand vein pattern or thermal images. Behavioral biometrics includes voiceprints
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In Ray Bradbury’s “August 2002: Night Meeting”‚ two beings have a random encounter that leads them to dispute the existence and reality of the other. Tomás Gomez is an Earthling living on Mars on his way to a party. While taking a break from driving‚ Tomás encounters a Martian named Muhe Ca. The two are unable to communicate until Muhe Ca learns English by touching Tomás’ head. When Tomás tries to hand Muhe Ca a cup of coffee‚ their hands fall through each other “like mist”‚ and the other person
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in thriller flicks where the protagonist is seen on and often tied in the ray of red light beams‚ while trying to reach a safe vault; one is well acquainted with the usage of laser light beams. In fact it is also considered as a security device even in household today to ward off burglary or theft. A laser beam is not a simple beam‚ but has the efficacy to respond when faced a distraction. This means that if the light ray gets interrupted with any objects‚ the photodiode receives resistance which
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300 GHz. In this RF system‚ the digital data is represented as variations in the amplitude of carrier wave. This kind of modulation is known as Amplitude Shift Keying (ASK). Transmission through RF is better than IR (infrared) because of many reasons. Firstly‚ signals through RF can travel through larger distances making it suitable for long range applications. Also‚ while IR mostly operates in line-of-sight mode‚ RF signals can travel even when there is an obstruction
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The IR spectrum in KBr was a great way to compare the library spectrum to the crude and recrystallized Phenacetin. The KBr is a compound that does not show up in the spectrum‚ only the crude and recrystallized Phenacetin show. In this experiment‚ the crude had an 87.17% match to the library. In the recrystallized Phenacetin‚ the IR spectrum was taken twice due to the amount of KBr used in the pellet. The first recrystallized spectrum had a 68% match to the library spectrum. That not being
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