Saturday, March 28, 2020

Big Bang or Creationism essays

Big Bang or Creationism essays Our Universe: Big Bang or Creationism Talking about our universe as a whole brings up a great question that theologians and scientist have been debating for years. So much so that it has involved boards of education and trials in court. Was God the creator of the universe as many of us are taught in Sunday school? After all it does say in the Book of Genesis that God created the Earth and the Heavens in six days and rested on the seventh. Or did the universe just happen as a chance occurrence as the Big Bang suggest? Scientist Stephen Hawking suggests that the origins of the universe always has been and continues to be a chicken-and-egg question (Hawking, 2002). In a nutshell, Hawking notes, what agency created the universe (Hawking 2002)? By the same token, what created that agency (Hawking 2002)? Hawkins also notes that; . . . in the last few years, it has emerged that the Laws of Science may hold even at the beginning of the universe. In that case, the universe could be self contained and determined complet ely by the Laws of Science (Hawking 2002). The problem with this is Christians who whole-heartedly follow what is written in the Bible believe the total opposite. This one sided type of thinking is nothing new however. The origins of the universe have been debated for years and continue to be debated today. The debate has been an either-or situation; either God was the Creator of the universe or he was not (Sluder, 2002). Either the universe was a spontaneous creation or it was not (Sluder, 2002). Trying to clear those two questions never easy. Trying to give a direct dictionary definition of creationism is a little more complex than it seems. First we have to start by saying that the belief in the creation of the universe as the Bible tells it is literally true. Creationism can then be considered a belief based solely up ...

Saturday, March 7, 2020

Scientific Definition of a Laser

Scientific Definition of a Laser A laser is a device which is built on the principles of quantum mechanics to create a beam of light where all of the photons are in a coherent state - usually with the same frequency and phase. (Most light sources emit incoherent light, where the phase varies randomly.) Among the other effects, this means that the light from a laser is often tightly focused and does not diverge much, resulting in the traditional laser beam. How a Laser Works In simplest terms, a laser uses light to stimulate the electrons in a gain medium into an excited state (called optical pumping). When the electrons collapse into the lower-energy unexcited state, they emit photons. These photons pass between two mirrors, so there are more and more photons exciting the gain medium, amplifying the intensity of the beam. A narrow hole in one of the mirrors allows a small amount of the light to escape (i.e. the laser beam itself). Who Developed the Laser This process is based on work by Albert Einstein in 1917 and many others. Physicists Charles H. Townes, Nicolay Basov, and Aleksandr Prokhorov received the 1964 Nobel Prize in Physics for their development of the earliest laser prototypes. Alfred Kastler received the 1966 Nobel Prize in Physics for his 1950 description of optical pumping. On May 16, 1960, Theodore Maiman demonstrated the first working laser. Other Types of Laser The light of a laser does not need to be in the visible spectrum but can be any sort of electromagnetic radiation. A maser, for example, is a type of laser that emits microwave radiation instead of visible light. (The maser was actually developed before the more general laser. For a while, the visible laser was actually called an optical maser, but that usage has fallen well out of common usage.) Similar methods have been used to create devices, such as an atomic laser, which emit other types of particles in coherent states. To Lase? There is also a verb form of laser, to lase, which means to produce laser light or to apply laser light to. Also Known As: Light Amplification by Stimulated Emission of Radiation, maser, optical maser