module in the brain‚ explains why a person with brain damage may continue to recognize faces‚ after losing the ability to recognize other objects. 3. These units which were named after Alexander Graham Bell were called decibels (dB). Each decibel is 1/10 of a bel. Using decibels‚ they can be used to determine sound intensity‚ intensity of a wave’s
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Definitions of Analog multiplier on the Web: * In electronics‚ an analog multiplier is a device which takes two analog signals and produces an output which is their product. Such circuits can be used to implement related functions such as squares (apply same signal to both inputs)‚ and square roots. Definitions of Frequency doubling on the Web: * Second harmonic generation (SHG; also called frequency doubling) is a nonlinear optical process‚ in which photons interacting with a nonlinear
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FORESTS; A forest‚ also referred to as a wood or the woods‚ is an area with a high density of trees. Forests cover approximately over 9.4% of the earth’s surface * USES OF FORESTS; Forests are important to the survival of human beings mainly because we are dependent on a significant degree of vast areas of forests. The following states the various uses of forests; * Habitat for wildlife. * Home for plants. * Flora and fauna. * Forest plants can be used for medicinal purposes
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logical connection exist only in the software‚ while a physical connection is one that exist only in hardware 8. How does convergence apply to the communications industry? Ans= In form of media press and public speaking. 9. What is the decibel loss of a signal that starts at point A with a strength of 2000 watts and ends at point B with a strength of 400 watts? Ans= 10*log10
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ULTRASONIC TESTING (UT) USEFUL FORMULAE 1. Velocity of Ultrasonic Waves in a medium (V) = f x l OR W here f = Number of cycles per second is called frequency. Measured in ‘Hertz’. Abbreviated as ‘Hz’. One Hertz is equivalent to One cycle per second l = Distance covered in one cycle is wavelength V= Velocity of Ultrasonic wave inside the medium in ‘mm/s’ 2. A coustic Impedance (Z) = V x r W here: Z= Acoustic Impedance r= D ensity V= Velocity 3. R eflection Coefficient
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Wooden Versus Aluminum Bats What happened to the old fashioned crack of the bat? The wooden bat has been used since the game’s establishment in 1864. An aluminum bat is more dangerous that a wooden bat due to the advanced technology. However‚ I believe that a wooden bat is better than a aluminum bat. The baseball bat controversy has been lingering over amateur baseball since the NCAA (National Collegiate Athletic Association) allowed the use of aluminum bats for the first time in 1974 (Adelson)
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B.Ag.Ali‚ Syazwan Bin Madso‚ Dayang Haniza Binti Awang Patra Abstract: Sound is technically described in term of loudness (amplitude) of the sound and frequency (pitch) of the sound. The standard unit measurement of the loudness of sound is the decibel (dB). Noise can be taken as pollution because it causes disruption which‚ in return may cause hearing impairment at critical conditions. The locations of experiment that were selected are DKP 7‚ DKP 8 and DKP 9 in UMS. At an interval of 5 minutes
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their mood with loud barks or endless whining‚ cats will keep their mood to themselves. Even when cats do whine‚ their meows or hisses are barely audible from another room‚ let alone from the neighbor’s house. An added benefit of your cat’s low-decibels purring is that it’s been shown to reduce stress and blood pressure‚ among other things.” This means cat-owners have peace and quiet. Obviously‚ having some downtime is important. However‚ dog-owners would have to deal with the barking and whining
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loudness‚ Levitin explains that‚ like pitch‚ it doesn’t actually exist. It’s all just vibrations of different intensities perceived as loudness by our brains. Sounds can be louder when they are processed different ways. We measure loudness in decibels. When the decibels reach a certain level permanent damage can be caused. Levitin concludes the chapter by explaining that the different attributes of music combine in many different ways that
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as eyes.Listening to music through headphones at too high a volume is a common habit among the teenagers of the modern life. This practice can seriously damage our hearing. Our ears are accustomed to sounds between 40 to 50 decibels. Listening to sounds between 80 to 90 decibels can
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