This website uses cookies to ensure you have the best experience. Learn more

Introduction Of Spicules Essay

573 words - 3 pages

The solar chromosphere is made almost entirely or entirely (certainly for the upper chro- mosphere) of jets known as spicules, with lifetimes of approximately 15 minutes with hun- dreds of thousands on the Sun at any given time (Beckers, 1968). There have been numerous investigations over the decades of spicules, for example, Roberts (1945), Lippincott (1957), and Dunn (1960)studied themat the polar limb. A spectroscopic study at the Sacramento Peak Observatory by Pasachoff, Noyes, and Beckers (1968)provided direct evidence of spicular motion, overcoming limitations of apparent motion derived from series of intensity images that may have resulted merely from changing ionization fronts instead of actual ve- locities. In addition to rising and falling motion along the limb, Pasachoff, Noyes, and Beck- ers also reported evidence for rotation of spicules. Mouradian (1965, 1967)alsoprovided spectroscopic measurements of spicular motions, and Lynch, Beckers, and Dunn (1973)and Nishikawa (1988)later remeasured size statistics. See alsoZaqarashvili andErdélyi (2009). Generally, the term spicules refers to the features seen at the limb of the quiet Sun (Golub
and Pasachoff, 2001), and this paper deals exclusively with such “classical” spicules. Similar features seen on the disk are called “mottles,” although some authors refer to those features as spicules as well. Beckers (1968, 1972)gives comprehensive reviews of earlier work on spicules, as well as mottles. Active consideration of limb spicules revived at the time of the 1998 total eclipse with a meeting on Solar Jets and Coronal Plumes on Guadaloupe (Koutchmy, Martens, and Shibata, 1998). Reviews of spicules were given by Suematsu (1998)and, fromtheoretical considerations, bySterling (1998a). Those presenting new ob- servations included Salakhutdinov and Papushev (1998),...

Find Another Essay On Introduction of spicules

phase diagram Essay

4456 words - 18 pages Introduction: Chemical equilibrium is a crucial topic in Chemistry. To represent and model equilibrium, the thermodynamic concept of Free energy is usually used. For a multi-component system the Gibbs free energy is a function of Pressure, Temperature and quantity (mass, moles) of each component. If one of these parameters is changed, a state change to a more energetically favorable state will occur. This state has the lowest free energy

Revolutionary Work of Art Essay

1890 words - 8 pages creates a new foundation in the film industry. Explicitly, since the introduction of film, which has opened a whole new way of perceiving reality, politicizing of art has virtually incepted the idea that films are now solely for entertainment for people that simply wants to be distracted. This type of distraction has an underlined meaning that has made it possible for the masses to perform new tasks of appreciation of arts (1069). The new concepts of

Enlightenment Thought in New Zealand Schools

1594 words - 6 pages , p. xviii) this meant that there was not equality for all individuals, as not everyone had the opportunity to attend school. While now day every child in New Zealand must attend school from the age of six, the same question of equality remains when comparing local versus central control. In the twentieth and the twenty-first centuries equality between schools is now the issue. With the introduction of the Tomorrow’s Schools report, the idea was

Psychological Egoism Theory

2240 words - 9 pages The theory of psychological egoism is indeed plausible. The meaning of plausible in the context of this paper refers to the validity or the conceivability of the theory in question, to explain the nature and motivation of human behavior (Hinman, 2007). Human actions are motivated by the satisfaction obtained after completing a task that they are involved in. For example, Mother Teresa was satisfied by her benevolent actions and

How Celtic Folkore has Influenced My Family

1587 words - 6 pages Conor Cruise O'Brien. The Story of Ireland. New York: Viking, 1972. Print. Sims, Martha C., and Martine Stephens. Living Folklore: An Introduction to the Study of People and Their Traditions. Logan: Utah State UP, 2005. 99. Print. "The Origins and Influence of The Celtic Cross.” 29 Sept. 2009. Web. 08 Nov. 2011. . Thuente, Mary Helen. W. B. Yeats and Irish Folklore. Totowa, NJ: Gill and Macmillan, 1981. Print.

Julia Margaret Cameron

1406 words - 6 pages At a time when women were looked upon as being homemakers, wives, mothers and such the late 1850's presented a change in pace for one woman in specific. Photography was discovered in 1826 and soon after the phenomenon of photography was being experimented with and in turn brought new and different ways of photo taking not only as documenting real time, but also conceptualizing a scene in which an image would be taken. Julia Margaret Cameron will

Evaluation of School Improvement

1403 words - 6 pages climate of the organization. Dr. Hunter indicated the learning environment should be positive, inviting, friendly, clean, and safe. Visitors should feel welcomed as they enter the school building. Dr. Hunter noted positive learning environment celebrates the diversity of the school population. The positive learning environment reflects the culture, belief, and values of the community, which is woven into the fabric of the school curriculum

Case Study: The Benefits of Animal Testing

1757 words - 7 pages Nine year old Amy has already had a rough start in life. She was born with an abnormal heart that hinders her everyday activities. Amy is unable to keep up with kids her own age because she often tires out easily. As a consequence, she has very little friends and is often alone. Amy is forced to take different medications everyday just to survive. Amy’s life consists of medicine, doctors, and constant hospital visits. However, Amy is due for a

Myth and Magic: Realism in "One Hundred Years of Solitude"

1531 words - 6 pages “He enjoyed his grandmother's unique way of telling stories. No matter how fantastic or improbable her statements, she always delivered them as if they were the irrefutable truth” (Wikipedia, 2011). Experiences are particular instances of one personally encountering or undergoing something and in these moments of time life changes for the best or the worst and memories are formed. These recollections such as riding your first bicycle, going to

Adiponectin: a Novel Indicator of Malnutrition and Inflammation in Hemodialysis Patients

2384 words - 10 pages serum adiponectin level as an indicator of nutritional–inflammation status in hemodialysis patients. Further studies are needed to clarify the role of adiponectin in pathogenesis of malnutrition and inflammation in hemodialysis patients. Keywords Adipocytes, Cytokines, Dialysis, Diet, Nutrition Assessment, Uremia Introduction Malnutrition-inflammation complex syndrome (MICS) is a common finding in

The Congo Free State: A Legacy of Apathy, Exploitation and Brutality

2298 words - 9 pages brutally exploited the inhabitants of the Congo, while at the same time robbed Congo of wealth, as the rubber was “sold” to the Europeans at prices far below what the rubber was actually worth. Only when others, specifically the British and the Americans, revealed the horrible conditions of the Congo, did the Belgian government reluctantly take over control of Congo, but the damage was done. Scholars, such as Martin Meredith, state that Leopold

Similar Essays

The Classification And Evolution Of Sponges And Starfish

841 words - 4 pages over 900 different types of fossils, and currently have over 5,000 different sponge Species classified in Phylum Porifera. (Introduction to Porifera, of their simple and unique design, they lack true tissues, but are rather an association of cells and are therefore referred to as Parazoans. They do produce a skeletal structure through the use of spicules and spongem. Mostly all of Phylum

The Potency Of Enthomopathogenic Nematode Isolated From Longicorn Borer In Controlling Squamura Celebensis (Lepidoptera: Cossidae) On Cocoa

1355 words - 5 pages can be used as an S. celebensis management strategy INTRODUCTION Squamura celebensis Roepke (Lepidoptera: Cossidae) is the most important pest among the stem borer on cocoa in Sulawesi, Indonesia. This insect destroy cushion and bark, and the damage may reduce significantly the productivity of cocoa if the population of borer in one tree is very high and great number of trees are infested (Khoo et al., 1991). The eggs laid on or in tree

Organic Petrology And Maturation Of The Bakken Formation

2838 words - 12 pages paper. I. The Bakken Formation, an Introduction The Bakken Formation is a clastic unit measuring to be around 45 meters thick that stretches across the Williston Basin that was deposited during the Late Devonian to the Early Mississippian. The Bakken Formation consists of three primary members that onlap (in some places lower member is absent due to non-deposition or over step of the middle member); the upper, middle, and lower members

When The Bubble Burst Essay

1539 words - 6 pages By the time I arrived state side from my second tour in the Middle East the housing bubble had already burst. I noticed a drastic change in the way that many of my friends and family were living. Several of my friends that worked in real estate had sold their boats and seconds houses. My own stock portfolio had lost a third of its value. My sister and her husband had defaulted on their home mortgage leaving them scrambling for a place to live. I