An Overview of Glass
Glass is a very odd substance, is it a solid or a liquid? There are
many reasons why it can be considered either of the two, but still
most people are unsure of its state. Glass may be a state of matter
that is neither solid nor liquid.
A liquid has viscosity, which is a measure of its resistance to flow.
So water may move very quickly because it has a high viscosity, but
oil has a high viscosity so it moves slower. If something were to have
a very high viscosity then it may seem like a solid but it would be an
amorphous solid. An amorphous solid is a liquid that looks like a
solid but doesn't have crystals so it just sits there for a long time
and slowly moves.
A solid has viscoplasticity, which is the resistance to flow under
plastic deformation. If you were to punch plastic with your hand it
would deform then go back to shape, but if you were to hit it with a
steel pipe there would be a dent in the plastic and it wouldn't go
back to its original form. So the viscoplasticity is like how much of
a force you have to put on it until there is a deformation. Some
materials don't flow but creep these materials are known as plasticity
materials. The only way they can be deformed is to be held under
stress (pressure) for a constant amount of time.
Since as far as we can tell both those things hold true for glass so
those aren't good ways to establish a for sure state of matter for
glass. Another way to decide where glass is a liquid or solid is to
say there is a minimum amount of shear stress required to permanently
deform it then it's a solid. There are materials which have some
limited flow known as viscoelasticity. The material will deform
elastically under stress. If the stress is held for a long time the
deformation becomes permanent even if the stress was small.
Kristallnacht “The morning after Kristallnacht, I remember we looked out the windows and we could see just strands of glass where the windows of the synagogue had been destroyed. The entire inside of the synagogue had been burnt out” ("Cincinnati Eyewitness Testimonies"). The Night of Broken Glass was the trigger for the start of the Holocaust as well as the cause of pain and suffering for thousands of people. The Germans were angry because of the assassination of their official at the hands
Kristallnacht- Night of Broken Glass “Be kind whenever possible. It is always possible.” said by the enlightened Dalai Lama. The Jews, innocent and sympathetic, were treated like trash during Kristallnacht. The Night of Broken Glass was one of the most terrifying and brutal nights of German history, in addition Kristallnacht was an excuse for the Nazi party to eradicate the Jews and other minor ethnic groups. The Secret Police and the Waffen SS could determine if people were Jewish or not if they
CHAPTER: 2 OVERVIEW OF SOLAR COLLECTOR 2.1 OVERVIEW OF SOLAR COLLECTOR : Solar collectors are special type of heat exchangers that transform solar radiation energy into thermal energy. The key component of all solar system is the solar collector. This is a device which absorbs the solar radiation from sun converts into heat and transfers this heat to a fluid ( air, water, oil ) passes through the collector. The solar energy collected is carried from the circulating fluid either directly to
big bands” (The Clarinet-Overview 2). In the marching band there are several clarinets being played. The marching band can be “played by up to hundred players” (The Clarinet-Overview 2). The classical symphony orchestra has about “two to three clarinetist playing the B flat or A clarinet” (The Clarinet-Overview 2). When needed they might also include an “E flat clarinet player” (The Clarinet-Overview 2). With harmonic orchestras, there are “30 players” (The Clarinet-Overview 2) of clarinets playing
Good Evening Ms. Caldwell and Mr. H: The following is an overview of the Turner event I attended on Monday evening (August 22, 2016). With nearly 90 attendees, the "DCA South Hangar Line Subcontractor Meet and Greet" started with a brief presentation (approximately 10 minutes) and general overview of the three (3) major construction projects that are scheduled to span the course of seven (7) years. The overview, which was presented by Mr. Ben Short, CMR Program Executive, more specifically detailed
Kristallnacht- The Night of Broken Glass On November 9th,1938, there was a major change in the lives of many Jews that lived in Germany. This night will forever be known as the Kristallnacht. In German, “Kristall” translates to crystal and “Nacht” translates to night. In English, it translates to “ The Night of Broken Glass.” The Kristallnacht was one of the worst times in history due to reasons behind why Hitler chose to stage the event, the extensive property damage and violence that occurred
Another highly acclaimed literary work of his is The Catcher in The Rye, which was published in 1951. (Charles McGrath) “A Perfect Day for Bananafish” revolves around the main character, Seymour Glass and his wife as they vacation in Florida just after World War II in 1948. It is soon revealed that Seymour Glass is suspected to have mental illness after his return from the war, leaving his wife, Muriel, and all the people around him in danger. A materialistic wife with little regard for Seymour’s mental
Present Day”. Nysut.org. NYSUT: A Union of Professionals. 3 March 2009. Web. 24 October 2012. Sorenson, Aja. “The Image and Reality of Women who Worked During World War II”. Www.nps.gov. National Park Service. Web. 1 November 2012. “Statistical Overview of Women in the Workplace”. www.catalyst.org. Catalyst. 19 June 2012. Web. 1 November 2012. United States Census Bureau. “Women in the Workforce”. Census.gov. United States Census Bureau. Web. 24 October 2012. “Women and Work After World War
Throughout the play, Williams highlights the importance of family dynamics and interaction in regards to shaping an individual, tacitly emphasizing how the characters in The Glass Menagerie are imprisoned by their environment and situation. Williams shows that Amanda’s nostalgic remembrance of her youth, Tom’s need to escape the Wingfield apartment, and Laura’s “inferiority complex” create a schism between reality and the characters’ perceptions of reality. As the characters in the play struggle
TThis essay will discuss the metaphors associated with the characters in The Glass Menagerie and how each of these metaphors represents a fragment of the American Dream. She is like a piece of her glass collection, too fragile to be brought into the real world without being devastated. Because of her sensibility, she has avoided dealing with people for so long that when she finally tries to socialise with Jim, she fails to see that she is being manipulated. Amanda is a faded Southern belle who
suffered from diphtheria which almost ended his life. Williams attended Soldan High School, a setting he referred to in The Glass Menagerie. Later, he attended University City High School. He then attended the University of Missouri. (Tennessee) In the late 1930s the young playwright struggled to have his work accepted. During the winter of 1944–45, his "memory play" The Glass Menagerie was successfully produced in Chicago garnering good reviews. It moved to New York where it became an instant and
Introduction Every new technological breakthrough our society takes on forces a change in the social norm. The groundbreaking Google Glass augmented reality (AR) technology could tremendously advance our society for the better; however, ethical concerns cause people to fear the new technology instead of embrace it. AR “refers to a wide spectrum of technologies that project computer generated materials, such as text, images, and video, onto users’ perceptions of the real world” (Yuen, Gallayanee,
As the human species develops, medicine follows suit. Researchers look down medicinal avenues which promise a better life-- a longer life. However, red and blue paint cannot engender purple paint without proper mixing. Thus, health sciences cannot expand without thorough experimentation. The Nazis exemplified this concept of “thorough experimentation” with their cruel and inhumane medical experiments. The trials varied in nature and reason. Some of the “experiments had legitimate scientific purposes
The protocol and conceptual overview of these procedures can be found under the header, “Properties of Skeletal Muscle” in NPB 101L Physiology Lab Manual Second Edition (Bautista & Korber, 2009, 9-17). The test subject for this lab was the Northern Leopard frog whose spinal cord and brain were severed. In order to carry out the experiments, the materials needed were one medium length surgical scissor, two hemostats and glass dissecting probes, a nine and four inch string, a cup of Ringers saline
culture. Furthermore, The structure of Islamic architecture that is used in mosques, tombs, palaces and fountains is unavoidable in sight. The relationship between early Islamic architecture and modern foundation of construction provides a penetrating overview of encompass of Islamic culture in Iran, Tunisia, India, and Turkey. However, Turkey was such a desirable region and preserved of the astonishing site of the structural design of the Ottoman Empire. Originally, the incredible mosques in Turkey have