form of infrared waves. Under normal conditions some of the infrared waves are trapped on earth by its atmosphere. This keeps the temperature of earth at equilibrium so that its inhabitants can survive. Under our current conditions‚ however‚ the infrared waves that used to leave earth’s atmosphere are trapped along with the usual amount and this is causing the temperature of our earth to change from its usual equilibrium to a hotter climate which is dangerous to our survival. These infrared waves are
Free Carbon dioxide Global warming Fossil fuel
A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. It is composed of semiconductor material with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor’s terminals changes the current flowing through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power‚ a transistor can amplify a signal. Today‚ some transistors are
Premium Semiconductor Transistor Lighting
Hubble Space Telescope is a space telescope that was carried into orbit by a Space Shuttle in 1990 and remains in operation. A aperture telescope in low Earth orbit‚ Hubble’s four main instruments observe in the near ultraviolet‚ visible‚ and near infrared. The telescope is named after the astronomer Edwin Hubble. Hubble’s orbit outside the distortion of Earth’s atmosphere allows it to take extremely high-resolution images with almost no background light. Hubble’s Deep Field has recorded some of the
Premium NASA
also known as LOT (Low Observability Technology) is a sub-discipline of military electronic countermeasures which covers a range of techniques used with aircraft‚ ships and missiles‚ in order to make them less visible (ideally invisible) to radar‚ infrared and other detection methods. The concept of stealth is not new: being able to operate without giving the enemy knowledge has always been a goal of military technology and techniques. However‚ as the potency of detection and interception technologies
Premium Stealth aircraft
CCTV GUIDE Many customers shopping for complete CCTV monitoring systems are confused and overwhelmed by the variety of available cameras and DVRs. Researching the products individually doesn’t help a user’s understanding because what he or she will see are long lists of specifications filled with technical jargon. As there is a lot of information to consider when purchasing and installing security equipment‚ we have compiled our knowledge and expertise and share them through the articles below
Premium
22648860 OBSERVATIONS AND CHARACTERISTICS OF THE SOMBRERO GALAXY (M104/NGC 4594) DOMINIC J. TAN ABSTRACT The Sombrero Galaxy (M104/NGC 4594) is an unbarred spiral galaxy and a suspected member of the galaxy group within the southern regions of the Virgo cluster. It is a nearby galaxy with a very distinctive appearance making it easy to identify. Despite being easily recognisable‚ it is still not completely understood. The exact process involved in its formation is unclear and it is not
Premium Galaxy Milky Way Star
* Wikipedia – collaborative encyclopaedia * Facebook - community * Twitter – blogging Question 2a Table 1 part (i) Sensor Environmental Measurement Value | | Infrared Infrared False | | Sound Sound fluctuate | | Input
Premium Social media Phrase The Help
on a global scale. This body of data‚ collected over many years‚ reveals the signals of a changing climate.The heat-trapping nature of carbon dioxide and other gases was demonstrated in the mid-19th century. Their ability to affect the transfer of infrared energy through the atmosphere is the scientific basis of many instruments flown by NASA. There is no question that increased levels of greenhouse gases must cause the Earth to warm in
Premium Carbon dioxide Global warming Climate change
Objective: The objective of this laboratory experiment is to study both SN1 and SN2 reactions. The first part of the lab focuses on synthesizing 1-bromobutane from 1-butanol by using an SN2 mechanism. The obtained product will then be analyzed using infrared spectroscopy and refractive index. The second part of the lab concentrates on how different factors influence the rate of SN1 reactions. The factors that will be examined are the leaving group‚ Br versus Cl-; the structure of the alkyl group‚ 3◦
Premium Solvent Alcohol
Pharmacopoeia (BP) for the identification of acetaminophen‚ the limit test for p-aminophenol and the assay for acetaminophen. Procedure Identification for Acetaminophen Potassium bromide (KBr) disc technique was used to prepare the sample for the infrared absorption spectrophotometry. The agate mortar and pestle were cleaned with absolute ethanol using lint free paper. 5 micro-spatula of KBr and 1 micro-spatula of Sample A were mixed together in the mortar. A pellet was dropped with the shiny side
Premium Chemistry Water Experiment