Essays on Ultraviolet Light

ASSIGNMENT 2: ASTRONOMICAL IMAGES

For each Micro Observatory Robotic Telescope Network observation:

position: RA= 13h 24.9m Dec= -7 degrees 28 minutes located in constellation: Libra Distance= 600 million km (33 light minutes) at closest to the Earth Field of view: Normal Exposure time: 15.00 sec. Filter: Grey (ND4)

Hour Angle: -1h 40.4m

Comment on quality of observation: Micro Observatory is run by the Harvard-Smithsonian Center for Astrophysics Question: Why are some of the targets listed as “not up tonight”? Micro Observatory Robotic Telescope Network observation: Target name: Jupiter Type of object: Planet position: RA= 13h 27.3m Dec= -7 degrees 39 minutes located in constellation: Libra Distance= ...

Introduction

There are environmental chemical processes which require light to react. These processes are called photochemical reactions. Photochemical reaction is commonly initiated due to the absorption of solar energy or light. When molecules absorb energy in the form of light, the atoms are converted in a transient excited state (Larson & Weber, 1994). This transition state or excited has completely different physical and chemical properties with the initial state of the molecule. The excited states also have more tendencies to react since they are considered stronger acids and stronger reductants that the initial state of the molecule. The excited state of ...

Discovery of ultraviolet light

Ultraviolet radiation is very significant in the tanning individual who are interested in making their skin look like leather as well as for vampires killing, yet it cannot be seen or else felt. The question is then, how did people discover existence the existence of ultraviolet light? Although light is comprehensively abundant when it comes from its primary source the sun, and it is tough to get hold of it because it travels at very high speed than anything else globally. Since light is subsequently insubstantial, for many years, individuals managed only to collect a few frequencies without knowing ...

Stratospheric Ozone Depletion

Ozone depletion is a natural phenomenon of the earth’s stratosphere due to the presence of free radicals that are from natural causes such as volcanic activity. However, as man evolved, he discovered his environment and built industries during the industrial revolution. These industries emitted tones of pollutants into the atmosphere, including compounds Ozone Depleting Substances. The continuous use of CFCs also contributes to the effect significantly. The worst case of ozone depletion ever recorded happened in 2006, during winter and early spring in Antarctica. That sounded a loud alarm to environmental scientists, political leaders and civil organizations come ...

Introduction

When the first crude telescopes grazed the vast space, the 17th century and astronomers such as Kepler and Galileo was already making discoveries of such as the moon craters, the rings of the planet Saturn, and the giant planet Jupiter. These discoveries paved the way for a more extensive exploration of the cosmos, which was ultimately revolutionized by the birth of the Hubble telescope. In April 1990, word’s most advanced space telescope named after the astronomer Edwin P. Hubble was launched at 353 miles above the earth’s surface with a mission to see deeper into space and beyond. The ...

Ultraviolet (UV) light refers to the electromagnetic radiation that possess a shorter wavelength compared to the visible light and longer than that of the x-rays. The wavelength of UV light ranges from 400 nm to 100 nm (NASA, 2013). This corresponds to photon energies that range from 3 to 4 eV. The UV light got its name from the fact that the spectrum that is formed by the light has electromagnetic waves that have a frequency greater that the ones that are identified by humans as violet. The frequencies are not visible to humans other than those who have a condition called ...

There has been use of a broad range of methods for controlling bacterial growth. The specific method employed is based on the kind of bacteria, as well as the nature of the material for which the user is seeking. Therefore, in order to control bacteria that form endospore needs techniques varied from the ones utilized for other cells, while surgical equipment sterilization would need treatments that are different from the ones employed in prevention of infection of an injury. Ultraviolet light, denoted as UV, can be termed as an electromagnetic radiation, which has a wavelength ranging from 100 to 300 nm. ...

Environmental Issue

Climate Changes and Ozone Depletion

The weather is changing but where and when is very unpredictable. Sometimes it is changing in slow ways but sometimes weather events are very extreme and dangerous. The Intergovernmental Panel on Climate Change (IPCC) in 2001 reported on the “probability of the world being three degrees Celsius hotter by the end of the century and of a distinct possibility of it being almost six degrees hotter” (Lovelock, 2008, p. vii). This is a very scary prediction Ozone depletion is a different type of problem although Henson (2008) has said that the ozone depletion problem does have some ...

Introduction

The photoelectric effect can be defined as an ejection or emission of electrons a metallic surface as a response to a light incident. Energy within an incident light is taken in by electrons inside the metallic surface. This provides the electrons with the necessary to be emitted from the metal’s surface. There have been many discoveries by many scientists such as Einstein and Maxwell who have identified different experiments of justifying the photoelectric effect. This experiment is the simplest and most convincing and direct proof of the photons existence as well as electromagnetic radiation and light’s ‘corpuscular’ nature. Therefore, this ...

Atopic dermatitis (AD) is a long-term skin illness. "Atopic" denotes a tendency to result into allergy conditions. "Dermatitis" refers to the inflammation of the skin. The common symptoms of AD are itchy and dry skin and rashes inside the elbows, on the hands and feet, behind the knees and on the face (Alexander, 2011).

Atopic Dermatitis Management

Current technology and knowhow about AD has placed people on a good position to fight it. This essay aims at highlighting the best practices that can be utilized entirely of almost eliminate AD. The process is divided into three sections namely prevention, treatment and empowering the stakeholders. The ...

Different Types of Lighting Available in the Market:

A broad range of lighting lamps is available in the market. Following lights are commonly used in big super markets, hotels and other bigger space places: Incandescent: this type of light is also known as incandescent bulbs. The bulb provides light by heating a specific material kept inside the bulb in the form of filament with electricity. The filament is supported with wire on both sides. The incandescent bulbs are widely accepted and compatible with any temperature. Bulbs do not carry any hazardous material and simple in technology. Metal Halide Light: These lamps are known for their high ...