Electromagnetic Radiation and Its Effect on the Human Body In 1998 a Maryland neurologist, Dr. Christopher Newman, was diagnosed with brain cancer and he could no longer work as a result of his disease. He claimed that the Motorola cell phone he had in 1992 to keep in touch with his patients gave him cancer. Then in 2000, he filed an $800 million lawsuit against several wireless providers including Motorola Inc., Verizon Communications Corp., Bell Atlantic Mobile Systems, and others. Within a month
The electromagnetic spectrum is all around us and serves many beneficial and lifesaving purposes every day. There is no escaping it, because much of the spectrum cannot be seen. We can tell it has taken place by getting a tan or sunburn or by the fact that our plants and flowers thrive and grow. This includes x-rays, gamma rays, visible, ultraviolet, infrared light, radio waves and microwaves. While it has many useful purposes, it can also have many negative consequences due to overexposure, some
Introduction to light: Electromagnetic radiation is a form of light energy. Electromagnetic is made up of visible light, invisible light (ultraviolet, infrared, X-rays, radio waves and microwaves). In vacuum lights maximum velocity is 3.0x10^8 m/s. Reflection: If an object does not radiate its own light, it must reflect light to be visible. Reflection includes two beams - an approaching or incident beam and an active or reflected beam. The imaginary line that is perpendicular to the principal axis
Introduction to light: Electromagnetic radiation is a form of light energy. Electromagnetic is made up from visible light, invisible light (ultraviolet, infrared, X-rays, radio waves and microwaves). In vacuum lights maximum velocity is 3.0x10^8 m/s. Reflection: If an object does not radiate its own light, it must reflect light to be visible. Reflection includes two beams - an approaching or incident beam and an active or reflected beam. The imaginary line that is perpendicular to the principal axis
A cell phone, also referred to as a cellular phone, transmits electromagnetic radiation into the air. This occurs, when your cell phone has to connect to a phone, you want to have a conversation with, by checking for networks Electromagnetic radiation, which is often abbreviated as EMR, is a form of energy which when travels through space, displays a wave like behaviour. Electromagnetic radiation has electric and also magnetic field components. Electric fields are generated by electrically charged
potential health hazard. While their health effects are largely untested, there have been numerous studies of the effects of the electromagnetic radiation emitted from these devices. All scientists agree that this radiation is dangerous at high levels and new studies are beginning to suggest that they may pose health risk at lower levels as well.("Wi-Fi Health Dangers & Radiation Health Effects") U.S. Citizens enjoy the many conveniences associated with wireless devices, yet we deserve adequate protections
applied in Optical Instruments. The key concepts are: a. Lights as a form of electromagnetic radiation Electromagnetic radiation is a term used to describe a pair of electric and magnetic fields that promulgate together at the speed of light. This means that light holds electric and magnetic components. The accelerated movement of electric charges emits radiation. This radiation is visible to us as light. Figure 1: electromagnetic waves Time-varying electric fields can bring magnetic fields and vice-versa
Introduction: Key Concepts: Light as a form of electromagnetic radiation: Light can be classified as a form of electromagnetic radiation, which includes visible light. The ‘light’ commonly referred to in everyday life belongs in this category. The electromagnetic spectrum includes other types of radiation such as gamma rays, radio waves and cosmic rays, all of which possess distinct wavelengths, frequencies and energy levels. These forms of electromagnetic radiation are not visible to the human eye but can
These different radiations could be used to study chemical and physical material properties of different atoms. Colors of light differ in wavelength and energies and when they interact with matter, the light is either scattered, reflected, transmitted, absorbed, reflected or fluorescence. The interaction makes vibrational, electronic or nuclear changes in energy levels. This difference between energy levels includes a range of electromagnetic spectrum. Types of electromagnetic radiation include gamma
When we look up into the sky, what do we see? During the day, we often will find the sun. The sun is much more than a ball of fire that we see in our daily lives. The sun gives earth life, from the condition of the season of the life that is produced. Overall, when we think of the sun we think of heat and light, but one might question; how does the sun produce the heat and light that is necessary for the earth to sustain life? The sun is also known as a star, just like the stars we see at night that
Heat is actually light, but it is a light that is invisible to us, or not in the visible portion of the Electromagnetic Spectrum. Infrared light is the heat that we refer to normally and is located just below the color red in the Electromagnetic Spectrum. Its name is literally its definition. “Infra,” which means “below,” then “red.” So, infrared, or “below red,” is below red on the Electromagnetic Spectrum. We can see things that do not give off their own light because of reflection. When a color reflects
Heinrich Hertz, was testing Maxwell’s Theory of Electromagnetic Waves. Hertz discovered that ultraviolet light discharged certain electrically charged metallic plates, a phenomenon that could not be explained by Maxwell’s Wave Theory. In order to explain this phenomenon termed the photoelectric effect, because both light and electricity are involved, the Quantum Theory was developed. The Photoelectric Effect Maxwell’s work with the Theory of Electromagnetic Waves may seem to have solved the problem concerning
molecules do not absorb, so, say if you had a blue colored solution, then the color of light will be orange. This is because the highest molar absorption coefficient for blue dye falls around 620 nanometer which is the orange part of the visible electromagnetic spectrum. The molar absorption coefficient can be found in an absorption spectrum. The absorption spectra is generate... ... middle of paper ... ...is for this experiment is: “If you increase the amount of drops of bleach mixed into a blue
Light is defined as electromagnetic radiation of any wavelength. Light is also known as luminous energy or radiant energy. The speed of light is 299 792 458 m/s and is always constant. Electromagnetic radiation involves electromagnetic waves, radio waves, infrared, visible light, ultraviolet, x-ray and gamma ray. Electromagnetic radiation can travel through empty space unlike other waves that can only travel through substances
Albert Einstein, classical theory was the predominant scientific thinking. However, it eventually became evident that classical theory was unable to explain the occurrence of certain phenomenon observed in experimental data – in particular blackbody radiation and the photoelectric effect. The works of both Planck and Einstein have led to the development of quantum theory and contributed greatly to society’s understanding. As Planck and Einstein were both affected by the two World Wars, their work also
The duality of how light behaves depends in which state light is being observed and how it interacts with an object 's surface. It is neither just a wave or a particle, they coexist and react to objects electrons and protons within their atoms. Animals, plants and our sky are examples of how light reacts and are seen. Light is a photon , which are tiny particles of light, however photons have electrons and protons which behave like waves and particles based on their given charge, this is the
INTRODUCTION A microwave oven is a kitchen electrical appliance that passes an electromagnetic wave with an extremely high frequency that is used to cook food. By absorbing energy from water molecules in the food, heat is produced, and therefore cooking can be performed. Besides cooking, microwave oven can be used to warm up food as well as used to defrost frozen food. Invention of microwave ovens definitely saves us a lot time and electricity. During this week laboratory class, we have been assigned
Radiation is what causes chocolate to melt. It uses electromagnetic waves to make the chocolate turn into liquid form. According to research, milk chocolate will melt the fastest. If the tempering does not go correctly, it could affect the data that is recorded. If you ever wanted to fully understand the science behind tempering chocolate, you must comprehend the information about the melting point of chocolate, radiation, and the ingredients that causes chocolate to melt. This is the first part
The physics properties of conduction, convection, and radiation are apparent and vital to our everyday life. The transfer of heat, a form of kinetic energy, can be described as the movement of a higher temperature to a lower temperature area. This movement of heat from one substance to the other can be used through the processes of conduction, convection, and radiation. There are many examples involving these principles within our common everyday activities. An example of conduction would be the
Atomic Emission spectroscopy is a technique used in the determination and quantification of elements present with a chosen sample. The basic idea of this process it that first an atom is formed, and then it is excited then emitted. After the photon is emitted and energy is released knowing the energy released one can quantitatively and qualitatively determine the wavelength present and hence the concentration of the element. Inductively coupled plasma atomic emission spectrometry is one of the most