Electromagnetic radiation

freeze up or break, but owning a cell phone had far more significant disadvantages such as health problems, automobile wrecks, and effects today’s children. Cell phone ownership is a source of negative health effects. According to Dr. Agarwal, “electromagnetic waves alter electric activity of the brain and causes disturbance in sleep; difficulty in concentration, fatigue, and headaches; and increases resting blood pressure.” Cell phone usage also has been linked to different types of cancers.…

enables the scan to detect diseases such as: cancers, heart diseases and brain disorders, before it might appear on various other imaging tests. As a result, more often than not, a PET scan could be the first step in saving a life. The PET Scan, uses radiation to reveal activity within the body on a cellular level.…

and well-being is what we want and this is an excellent way to do that. UV Rays The Sun is a very nasty monster that can cause catastrophic damage to our skin. The most damage, of course, comes from the ultraviolet radiation from the sun’s rays. Ultraviolet is an electromagnetic radiation and is present in sunlight constituting about 10% of the total light output of the Sun. Even though UV rays make up only a very small portion of the sun’s rays, they are the main cause of the sun’s damaging…

Gamma ray bursts (GRBs) are beams of energy in the form of gamma rays that are beamed out of the poles of a collapsing star, these are formed from very intense explosions in distant galaxies. GRBs are the brightest known electromagnetic events in the universe. They can last just a few milliseconds, or hours. The burst is often followed by an afterglow, which is emitted at longer wavelengths. We have been able to learn a lot of what we know about GRBs from afterglow. We can measure how far away…

people 's days. To avoid the most radiation as possible, there are many ways that people should think about while calling. First, when making a call, the most radiation is emitted during the connection phase. So simply by holding the phone away until the other person is connected, radiation can be significantly reduced; using the speaker phone for most of your calls can also increase the distance between your head and the phone essentially eliminating the radiation. Other ways are to only call…

How exactly do medical imaging and geometry relate to each other, you may ask. They are certainly different things, but maybe not as different as people might believe. The property that connects these two subjects is 3D reconstruction, which plays a major role in the geometry aspect of medical imaging. First of all, I should explain specifically what 3D reconstruction is: the use of numerical approximation to rebuild 2D images by a computer taking the 2D data slices, reading the data, and…

how energy works, it is possible to understand the Laws of Thermodynamics and how they relate to heat transfer. Within the Laws of Thermodynamics there are three ways that heat can be transferred. These ways are convection, conduction, and finally radiation. Convection deals with liquid heat transfers. Convections currents are used typically with liquids because the hotter fluids tend not to be as dense as the cooler parts, enabling for hotter fluids to rise above the cooler. Conduction does not…

CT scans, also known as computerized tomography scans, can be used to do heart scans of patients with challenges in the cardiovascular world. Medical technicians also perform chest x-rays to help diagnose heart disease. These machines use electromagnetic radiation to make an early diagnosis of heart disease. Our Hewlett- Packard brand computers have everything we need to become successful in the goal that we are meaning to achieve it has all the microsoft apps, hardware and software, and the…

recalls “I can still see the bright-crimson glow, it was like the reactor was glowing. This wasn 't any ordinary fire, it was some sort of shining.” During the night graphite reactor number 4 had exploded and was releasing seven tons of dangerous radiation into the surrounding area (Borrero).…

The History of the Development of the Four Fundamental Forces Nature has a total of four fundamental forces. The forces include gravitational, electromagnetic, strong nuclear and weak nuclear force. Gravitational force is the force of attraction between all masses. Every object in this universe is pulling upon other objects. Many scientists came up with logics to explain the science behind gravitational forces. The first one to try was Aristotle in around 330 BC. Aristotle believed Earth and…