Introduction
Electromagnetic radiation, generally known as light, is energy composed of electric and magnetic field components. It also displays wavelike properties such as refraction, reflection, diffraction, and interference. Electromagnetic waves can be found in different forms, these include radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, x-rays, and gamma rays. “Despite the fact that all these electromagnetic waves travel at the same speed, they differ in their wavelength and frequency” (Merriam Webster). However, electromagnetic radiation also exhibits particle properties. German physicist Max Plank proposed that energy in electromagnetic radiation can be emitted or absorbed in small units called quanta. Nevertheless, German-American physicist Albert Einstein use Plank’s quantum equations, E= hv, to describe the photoelectric effect. Due to his explanation, light was consider as pockets of energy called photon.
The overall idea of the photoelectric effect defines the phenomenon of the emission line spectrum. In the Bohr model of the hydrogen atom, electrons orbit the nucleus in circular trajectory. These orbits of differing energy are called energy levels. The energy level an electron normally occupies or the lowest energy level is the ground state, located in the inner part of the atom. The electron can move to higher energy level by absorption. This is called the electron’s excited state, when they are further away from the nucleus. The electron can still return to its ground state by putting in action emission, releasing the energy it has absorbed. “Electrons may obtain the energy that excites them by absorbing a photon, which contains small units of quanta” (Bookrags).
Spectroscopy is the use of light, sound, or particle emission to study matter. “Emissions are able to provide information about the properties of the matter under investigation. The device frequently use for this is a spectrometer” (About.com physics). Scientists use spectroscopy to find the chemical composition of stars. They study the intensity and position of emission and absorption lines, meaning they analyze the spectrum light or the light a faraway star gives off in order to get information about that particular star. When they study the spectrum of a star, they see the wavelengths of
Related Documents: Effects Of Electromagnetic Radiation
Ancient Rome was one of the largest and the most powerful empires in history. Its central was in today Italy, then its territories and influence was expanded to the Middle East, Northern Africa, Western and Central Europe. It reached the height of its power between 100 and 200 A.D then collapsed in 476 A.D. Today, we will tell you about Roman Empire, about its development, its unique characteristics, its collapse, and its affection in today life. The founding of Rome is very much embroiled in myth…
was moving and swaying along to the rhythm of the piece. I could feel the emotion and dedication she had to playing the piece perfectly. Gupta and Roman methods of political control were different in that the Gupta Empire encouraged innovation through patronage of the arts, whereas the Romans relied on slaves for free labor. The emperors of the Gupta Empire had a love of the arts that was passed down from father to son. Because of this, artists in Gupta India were paid for their work, which caused science…
Rome had begun annexing provinces in the 3rd century BC, four centuries before reaching its greatest territorial extent, and in that sense was an "empire" while still governed as a republic.[8] Republican provinces were administered by former consuls and praetors, who had been elected to one-year terms and held imperium, "right of command".[9] The amassing of disproportionate wealth and military power by a few men through their provincial commands was a major factor in the transition from republic…
The Greco Roman Empire refers to the geographical regions and countries that were directly, influenced by language, culture, government, and religion of the ancient Greeks and Romans. The Roman had supernatural sanctions to support the rule. By the first century they began to regard their deceased emperors as gods and established religious cults to strengthen the authority of living emperors. The Roman Empire offered a king of assimilation to its subject peoples. The empire granted Roman citizenship…
particular dens. Tiberius was basically slapping his opponents in the face with these characterizations. He did this because he wanted to show on behalf of the poor that he did not fear the rich or should I say these savage beasts. Julius Caesar was a Roman military and political leader. During the battle of…
The Roman Empire and Han Dynasty were both very successful empires and dynasties in their time. They both prospered and united their countries. Of course they had their moments of falling as an empire and dynasty, but, they got back up and built from there and went onward grow. The Roman Empire, there are numerous reasons why the fall of this empire happened. First, the civil wars, there were always disagreements and the people of this empire loved fighting. So, war…
Report On Roman Empires The first famous Emperor from Rome that this report will be on is Julius Caesar. Julius was born in Rome on July 12 in 100 B.C.E. Julius’s father was Gaius and his mother was Aurelia, although his father died when Julius was only sixteen years old. His family was part of the original aristocracy in Rome ( called…
Though the roman empire and the roman republic vary in their political structures they are quite common in the structures of their social hierarchy and reasoning for their downfalls. The Roman Republic and the Roman Empire highly differ in their political structures. The republic: created in 509 BCE. was a form of representative democracy. It consisted of 2 consuls of which were appointed by the senate and then voted on. These consuls were the head officers and the were appointed for one year…
two empires were both extremely well established and maintained a structured political system. The Roman Empire, which lasted from 753 B.C. to 600 C.E. and the Han Empire, which lasted from 202 B.C. to 220 C.E., were both extremely powerful empires in their times and had had many similarities in the way they grew and developed but differed in the way they maintained their economic patterns and their declines. The city of Rome was founded by Romulus in 753 B.C.E. The growth of the empire was…
Define ten terms: Caliphate: It is the name of the Islamic Empire during the post-Prophet Mohammad era. It is also the office established in succession to the Prophet to rule the Empire. This is where Islam initially branched out. Charlemagne: He was the grandson of Charles Martel. He campaigns in several countries in Europe in 810s, and he is supported by the Pope and ultimately becomes the emperor of the Holy Roman Empire. He was also a person involved in the creation and implementation of the…