Spectrophotometry. Spectroscopy‚ and the Spectrometer Spectroscopy is the branch of science concerned with the investigation and measurement spectra produced when mater interacts with or emits electromagnetic radiation Meanwhile‚ spectrophotometry is the measurement of color in a solution by determining the amount of light absorbed in the ultraviolet‚ infrared‚ or visible spectrum. A spectrophotometer is an instrument often used to compare the intensity of light from a regulated or standard
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(infrasonic) to 20‚000 (ultrasonic) hertz. We can’t hear above 20‚000 hertz or below 20 hertz (ultra and infrasonic waves). Light is both part particle and part wave. Light is "the electromagnetic radiation that may be perceived by the human eye". It consists of photons‚ which are massless bundles of concentrated electromagnetic energy. Light’s lower frequency is red‚ and the higher frequency is blue. Like sound‚ light has frequencies humans can’t detect. Ultraviolet light is at a frequency higher than
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E.M. INTERACTION WITH MATTER 1 SCATTERING of E.M. RADIATION Type of scattering depends on the e.m. energy‚ ~! wrt the electron energy: Ionization energy EI Rest-mass energy me c2 2 CLASSICAL MODEL E.M. wave interacting with an oscillating electron Frequency of oscillation is given by Coulomb energy: !02 = kC /me e.m. field adds a driving force at e.m. frequency !‚ F = Radiated power is related to the electron acceleration‚ a 2 ✓ ◆2 !4 2 cE (!02 ! 2 )2 0 cE02 = P/I0 ‚ I0 = The cross-section
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THEORETICAL STUDY ON MICROWAVE ASSISTED BONDING OF POLYMER BASED MICROFLUIDIC DEVICES By KASI BALAMURUGAN MANI A thesis submitted in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE IN MECHANICAL ENGINEERING WASHINGTON STATE UNIVERSITY School of Mechanical and Materials Engineering May 2013 To the Faculty of Washington State University: The members of the Committee appointed to examine the thesis of KASI BALAMURUGAN MANI‚ find it satisfactory and recommend that it
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2014-20180280035Electromagnetic Compatibility (EMC) is the ability of electrical equipment to perform efficiently in an electromagnetic environment without being affected or influenced by other devices in its proximity. EMC shielding is a protection provided to electrical and electronic devices to protect them from EMI. EMI refers to the phenomenon where electromagnetic radiation affects the performance of electrical and electronic equipment. EMC shielding is used across many industries because of
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Acute Radiation Syndrome Acute radiation syndrome which is also sometimes known as radiation sickness or radiation toxicity is an extremely serious illness that occurs when the entire body (or most of it) receives a high dose of penetrating radiation‚ a dose greater than 50 rads‚ in a very short period of time. Studies in animals and humans exposed to radiation have allowed researchers to describe acute radiation syndrome. The most replicative cells are the most sensitive to the acute effects
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5 When Radiation Therapy Kills 1. What concept in this chapter are illustrated in this case? What ethical issues are raised by radiation technology? There are three basic concept that can be apply in ethics in an information society. The concept that illustrated in this case is accountability. Accountability can be define as the responsibility to someone or for some activity. In this case hospital need to find the mechanism to identify the responsible parties for the radiation therapy
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metal ions‚ based on each element’s characteristic emission spectrum” (Flame Test 1). Using this test‚ an element can be identified using its emission spectrum‚ or color. An emission spectrum is defined as the spectrum of frequencies of electromagnetic radiation emitted due to an atom’s electrons making a transition from a high energy state to a lower energy state. Since each element has different numbers of electrons‚ each element’s emission spectrum is different. This allows elements to be identified
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The Pro and Cons of Chemo and Radiation TRENEICE L. ANDERSON Pros of Chemo In early-stages cancer‚ surgery is performed with the intention of curing the disease. This is often followed by chemotherapy to reduce the risks of recurrence. In case of advanced-stage cancer‚ the aim of treatment is to control the cancer by controlling the symptoms. This enhances survival and ensures a better quality of life. THE EFFORT OF AWARENESS OF BREAST CANCER IS TO PUSH MORE WOMEN AND LOVE ONES TO TALK
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telescopes utilize one or more concave mirrors for the objective lens to condense the light and a small lens called an eyepiece. Pg3 Conclusion A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century‚ using glass lenses. They found use in terrestrial applications and astronomy. Within a few decades‚ the reflecting
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