other elements and used as a transistor in thousands of electronic applications. Germanium is also finding use as an alloying agent‚ in fluorescent lamps and as a catalyst. Both germanium and germanium oxide are transparent to infrared radiation and so are used in infrared spectroscopes. Germanium oxide has a high index of refraction and dispersion and is used
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Ideas about the solar system Our understanding of the solar system has changed over many centuries. Scientists such as Ptolemy‚ Copernicus and Galileo added their ideas to our changing understanding. We observe the universe using a variety of equipment‚ from telescopes to orbiters and landers. Models of the solar system The planets and the Sun orbit the Earth in Ptolemy’s model. Our understanding of the universe has changed over time. Different civilisations have created different models to
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welds should wear a helmet to protect himself from the fire sparks. The headgear protects the welder’s eyes‚ face and neck from flash burn‚ ultraviolet light‚ sparks‚ heat and infrared light. It will prevent from retina burns which lead to loss of vision. In order to avoid this unprotected exposure to the ultraviolet and infrared rays it is necessary to make use of the right helmet which safeguards the body. Arc welders are supposed to wear the right type of helmet to safeguard themselves from the fire
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known as a “Plot Watcher”‚ in the National Park. I had concluded‚ at this time in my research‚ that the Bigfoot could detect traditional trail cameras. I had a working theory that the Bigfoot most likely could detect the motion and the passive infrared sensor used on a traditional trail camera. The “Plot Watcher” camera only functions during the day. It does not utilize sensors‚ instead the user sets the camera to capture one photograph every five‚ ten‚ or twenty seconds. I was anticipating that
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2014 Seeing Things Far Away as Though Nearby The main purpose of a telescope is to collect light. Telescopes are designed and built to gather specific kinds of information at different wavelengths in the electromagnetic spectrum‚ such as visible‚ infrared or millimeter wavelengths (Takunaga). The word “telescope” consists of the Greek roots “tele-“ meaning “far” and “-skopos” meaning “seeing”. The telescope is an optical instrument for making distant objects appear larger and nearer. Refracting telescopes
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Textiles in defense Dr. Muhammad Mushtaq Mangat www.mushtaqmangat.org Textiles in defence Defence forces on land‚ sea‚ or air throughout the world are heavily reliant on technical textiles of all types – whether woven‚ knitted‚ nonwoven‚ coated‚ laminated‚ or other composite forms Technical textiles offer invaluable properties for military land forces in particular‚ who are required to move‚ live‚ survive and fight in hostile environments. They have to carry or wear all the necessities
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has augmented at its fastest rate in recorded history. The emission of greenhouse gasses such as Carbon Dioxide (CO2)‚ Nitrous Oxide (N2O) and Methane (CH4) render the Earth’s atmosphere more transparent to visible radiation from the sun than to infrared radiation emitted and reflected from the planet’s surface (NASA Earth Observatory). With this extra heat trapped within the atmosphere‚ the temperature of the surface of the planet increases very slightly over hundreds of years. However these small
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25 Nov 2012 Team size : 3 Equipment : 555 timer‚ infrared LED‚ 1738 IC‚ JK flip-flop‚ buzzer Description : This is minor project which is totally hardware. The main objective of it to aware home members that someone enters from the main gate. This is divided into two sections: 1) Transmitter- for transmitting the radiations and 2) Receiver- for receiving the radiations. The working is that when someone enters from gate infrared radiations are interrupted‚ the buzzer is beep. INDUSTRIAL
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Introduction One of the most common causes of fatal helicopter accidents is Controlled Flight Into Terrain (CFIT) at night. (FlightWeb). The major contributor to such accidents is the pilot ’s level of situational awareness‚ or rather not being able to see where they are going‚ or what might be in the way of unobstructed flight. As helicopters are routinely used in low-altitude missions they are frequently required to fly in close proximity to trees‚ power lines‚ telephone poles‚ etc. As
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their remaining stamina. The Electromagnetic radiation is transmitted by waves at the speed of light (299-792‚ km/sec) throughout space. There are electromagnetic waves and they are made up of marginal frequency radio waves and they are helped by infrared energy and looked at ultraviolet x-rays to luminosity and gamma rays that are high in frequency. If they are beside each other most of these waves do create an electromagnet spectrum. When we look at electromagnetic waves they may be identified
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