Light Pollution 1. Every urbanite knows the bright lights of the city make it impossible to see the stars in a night sky. What most of us do not know is that those lights also may be making us sick. The cause is light pollution – the unearthly glow of billions of street lamps‚ security and porch lights‚ searchlights‚ office lights and signs – as people everywhere try to dispel the darkness of the night. 2. For the first time‚ light is being investigated seriously as a pollutant and a health hazard
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Mechanical Waves Background Mechanical waves are waves which require a medium for propagation since energy is transferred via the motion of the medium. An example of a mechanical wave is sound. Transverse waves are waves which vibrate perpendicular to their direction of propagation. Surface water waves can be classified as a transverse wave. All electromagnetic waves are also examples of transverse waves. A longitudinal wave is a wave in which its particles vibrate parallel to their direction of
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Lights‚ Camera‚ Action. Light it up. As the popular Soca song goes‚ ‘Let me see you light up the Air’. Or Vybz Kartel’s song says ‘Light the Weed’. All focused around the presence of light. We cannot see without light‚ so in this regard‚ light illuminates our path. For this reason we ensure that our surroundings are fitted with lightbulbs. We cannot function in school or work or in life if there isn’t some measure of light. I’m here to enlighten you about the choice that you will face when purchasing
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there are many parts to the clarinet. first we have the mouthpiece‚then we have the barrel‚next we have the upper section‚after we have the lower section‚ and finally we have the bell. there are many parts to the clarinet and many notes and keys. i love playing the instrument‚if you are interested in playing i highly recommend it. its not that hard to learn how to play and you catch on the the notes and keys pretty fast. its a lot of fun and you get a lot of musical opportunities. its good for business
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a Different Light It is quite hard to think of a villain making a warm and fuzzy impression. It is even harder to see thing through a villains eyes‚ truly understanding what they are feeling and why. For this to happen the reader must be left wondering about this villain. For this to happen‚ the reader must be able to relate to this villain. In “A Good Man is Hard to Find‚” O’Connor makes this happen. The villain in the short story‚ The Misfit‚ is illuminated in a compassionate light to the readers
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SCHOOL OF PHYSICS Physics 1001: Laboratory 3. Standing Waves. Your name/student number:_________________________________ Date:_________ Marker’s signature:______________ Mark:______ Pre-lab Question 1: What is the wavelength of a sound wave of frequency 500 Hz in air (you will need to look up the speed of sound in air)? ________ m. Pre-lab Question 2: If a person inhales helium gas the sound of their voice changes quite dramatically. Why? Pre-lab Question 3: A shower cubicle
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Animal Sounds and Vocals Animals aren’t like human beings – they can’t speak or laugh but have found other ways of communicating between each other. Animals might not be able to speak or master advanced language techniques‚ but they certainly have other ways of communicating. There are plenty of examples how different species of animals communicate with humans and/or animals – here are a few: Cats rub against objects
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the progress of the condition. (Glaucoma is the leading cause of blindness in the United States. It damages vision by increasing eye pressure over time.) Cancer. Marijuana can stimulate the appetite and alleviate nausea and vomiting‚ which are common side effects of chemotherapy treatment. Multiple Sclerosis. Marijuana can limit the muscle pain and spasticity caused by the disease‚ as well as relieving tremor and unsteadiness of gait. (Multiple sclerosis is the leading cause
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radio stations broadcast. A radio wave (radiating electric field) propagates out from the source‚ traveling at the speed of light. The source‚ for example an antenna‚ creates oscillating electric(E)/ magnetic(B) fields. These fields are perpendicular not only to each other but to the direction of the traveling wave‚ and travel away from the antenna. The electromagnetic wave is‚ therefore‚ a transverse wave. The electric/ magnetic fields store the energy of the wave. Basically‚ the oscillating current
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Light that is visible to the human eye is a small portion of the electromagnetic spectrum which can vary in colour based on the wavelength of what is being seen at any particular time. This visible light has a primary function of causing electrons to become more active with higher energy rates. The colour that is seen revolves around the size of this portion which is noted as the wavelength. White light is a culmination of all colours which is the cause of it being the brightest. Furthermore‚ when
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