Everywhere I turn‚ I see someone on a cell phone‚ either talking or texting. Every car next to me in traffic has a GPS on the dashboard‚ including my own. It seems that everyone needs some help from technology on a daily basis. It both surrounds and intrigues us. Technology can be helpful‚ fun‚ and entertaining. Much of technology is created to assist with making projects faster or daily tasks more efficient. However‚ the collaboration of technologies in our lives has a few negative effects and I
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Chemotherapy is the treatment of disease by the use of chemical substances‚ especially the treatment of cancer by cytotoxic and other drugs. Chemotherapy and radiation do not always fully cure cancer in the body. It separates cells in the body which affects hair‚ nails‚ skin‚ the digestive system‚ and the blood. This procedure makes you very ill and can cause lifelong damages to various parts of the body‚ including your brain‚ liver‚ hearing‚ and reproductive organs. Homeopathic cures are more effective
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Each of us lives on big earth family‚ the earth provides us wealthy resources and energy .Nowadays，with rapid development of human science and technology‚ people crazy grab the earth’s resources‚ especially after the second industrial revolution accelerated the lighting industry and undoubtedly exacerbate the greenhouse effect and exhausted the earth energy. people crazy mining coal to generate electricity‚ harmful gas and dust and coal combustion has aggravated the earth’s atmospheric pollution
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of gravity. In fact‚ light cannot even escape the power of a black hole. If light passes the event horizon there is no return and it is taken into the black hole. Once an object is sucked into a black hole‚ it begins to be bombarded with radiation‚ and crushed at atomic level. The point however when an object is completely gone is not the event horizon‚ but rather is the singularity. The event horizon is one of the layers that surrounds the singularity. Below is a diagram of the different
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wavelengths of light that the spectrophotometer gives off (Meah‚2013). The level of light transmitted defines the amount of light absorbed‚ for instance‚ the lower the light absorbance the higher the amount of light transmitted. Ultraviolet (UV) light is radiation but the wavelength is shorter than visible light. A solution is a mixture of two or more substances. A stock solution is used to make a variety of other solutions which hold different concentrations; this is done via dilutions (Meah‚ 2013). Diluting
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X-radiation (which is composed of X-rays‚ hence the name) falls under electromagnetic radiation. X-rays and gamma rays are sometimes confused‚ but they are different‚ as X-rays are emitted by electrons outside the nucleus whilst gamma rays are produced inside the nucleus. X-rays have extremely small
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characteristic curve. sensitometer (optical step wedge) and densitometer are used to measure film’s response to light Response of exposure & How is it manifested The response is the change that takes place‚ after exposure to electromagnetic radiation (light or x-rays)‚ in the photosensitive emulsion on the film The response of the film to exposures is manifested as a degree of blackening produced after chemical processing Witch is quantified by:- • Transparency • Opacity • Optical Density (OD(
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Electricity Electromagnetic Oscillations and Waves Diffraction and polarization of microwaves 4.5.06-00 What you can learn about … Diffraction Focal point Linearity Circularly and elliptically polarized waves Transverse waves Polarizer and Analyzer Constructive and destructive interference Principle: The equivalence between visible light and microwaves as special cases of the total spectrum of electromagnetic waves can be demonstrated using diffraction and polarization of
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Radio waves and Microwaves Radio communications Radio waves are used to broadcast radio or television signals from transmitters‚ which are then converted into electrical signals with an aerial (which is made out of metal to absorb the radio waves) so you can hear and see them. When done so the aerial converts this wave into an electrical signal (because of the electromagnetic waves energy exciting particles in the aerial and causing them to oscillate/vibrate and thus create an electrical current)
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Title: Spectrophotometric analysis of a two-component mixture Aim: i. To prepare working standards of dichromate and permanganate ii. To measure the absorbance of the prepared working standards of dichromate and permanganate using a spectrophototometer iii. To determine the concentrations of permanganate in a mixture of unknown. Abstract: Working standards of dichromate and permanganate were prepared and absorbance for each found. This was done in order to plot
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