Rare earth element Essays

Rare earth metals are a group of 17 that are found together on the periodic table. The whole rare earth metals are made only of metals. the group consists of yttrium and the 15 lanthanide elements. The first element in row 6 is lanthanum which is where the lanthanide group got its name. The word "rare” can make you think that the world is lacking these elements but the elements are in fact relatively abundant in the Earth's crust but in limited, insufficient amounts. The rare earth elements group

The element cesium is an element like no other. It has many characteristics that separate it from many of the other elements that most people know. Cesium also has important uses for our society and we can benefit from it a lot. Cesiums story starts way back in 1860 Heidelberg Germany, with two German chemists by the names of Robert Bunsun and Gustav Robert Kirchoff. A year before they discovered the element cesium, they developed a spectroscope. This tool allowed them to see the atomic spectra

“Did you know the Bible talks about a great cube-shaped spaceship coming down to Earth?” Is this talking about UFOs? (Graves 12) To begin, this paper is on UFOs, the appearances of extraterrestrial spacecraft, and the criteria to be one. Why extraterrestrial rockets are perceived to be undeniably real, legitimate, things. Why Flying saucers are perceived to be not tangible, or legitimate things. Finally, why the media glamorizes UFOs. UFO’s will forever be a controversy because of media glamorization

literary classic because it has universal themes, it is forever lasting, and it teaches about the past. In order for literature to be considered "classic" it must contain several elements. One of those important elements is that it needs to be universal. To Kill a Mockingbird contains these universal elements such as: hardship, struggle, doubt, death, friendship, courage and hope. In “What Makes a Classic Novel a Classic?”, the author, Italo Calvino says that universal themes "can be representative

dyes, rather than chemicals, what is used now. All in all, the setting was a good setting because it illustrated the power the guardians had over the people, the simplicity of the community, and how everything was the same and anything different was rare, and it was also in a good

Furthermore, compostition which is the arrangement and placement of the objects in art in order to create a meaning for the art piece. The way most of Morandi’s still life art pieces are either drawn from the perspective of looking from above or from the front. But the Natura Morta 1953 is drawn from the front and a little of the above perspective, which also enables us to see the shade on the objects from the top and tell which of the objects has a lid and which one doesn’t. Like the sup/bowl and

Arguing his terms and ideas as unclear and vague will prove this theory weak in the sense that Spinoza isn’t entirely confident on what substance and the other elements are. By being general, Spinoza leaves room for ‘error’ and this can be considered cowardice. Empiricist John Locke targets this reliance of innate ideas as one that rationalist, like Spinoza when using to explain substance. In his work, An Essay

People have always tried to avoid death, but they cannot. In Edgar Allen Poe’s “The Masque of the Red Death” the characters are trying to avoid the Red Death, but they fail. Every hour an ebony clock chimes indicating that life is passing and death is close. People begin to die every minute once the Red Death enters. This story of death works out, because Edgar Allen Poe gives good use to author’s craft. Edgar Allen Poe uses imagery, symbolism, and setting to create an effective story. In the

Intellectual Unity Unity is creating by repetition. By unity we are creating the elements which will cooperate. Elements should look like they are carefully picked to work together, not just spread on the page. Unity enable viewers to see the whole, not just some parts. You first decide what will your design be, and than choose elements that are propriate for your design. That is the best way to acchieve unity. When your elements agree you achieved unity. Design principles such as contrast, repetition,

What is the central idea of this passage?The central idea of the excerpt “ Harriet Tubman: Conductor On The Underground Railroad” is that from a young age, Harriet was forced into slavery. Which, later on, empowered her to do great things in her life. Identify a second central idea and respond using RA. Another central idea of the excerpt “ Harriet Tubman: Conductor On the Underground Railroad” is that although Harriet grew up in a terrible place, she still made the most of it with her father

On Saturday, November 11, I attended a performance of Cabaret at Dutchess Community College. This musical is set in Berlin, 1931 Germany pre World War I as the Nazis are rising to power. It takes place in a nightclub, the Kit Kat Klub and revolves around an American writer named Cliff Bradshaw and his relationship with an English cabaret performer, Sally Bowles. The cast features six major characters: Sally Bowles, the headlining British singer at the Kit Kat Klub, the Emcee, or the Master of Ceremonies

Always take caution in dangerous times because not everything is what it seems. The person you trust most might be the enemy. In “The Lamb to the Slaughter” by Roald Dahl, Mary Maloney becomes fazed when her husband tells her he is going to leave her and their unborn child behind. And so, Mary decides to murder him with a frozen leg of lamb. However, now Mary must deal with the repercussions and cover up the murder. But, the cops are quickly deceived by Mary’s victim act. When analyzing Mary, we

Shockingly, Zaroff had a "trophy" room full of heads. Richard Connell wrote, "The Most Dangerous Game." Throughout the story Connell develops multiple themes about hunters and hunted. This story shows how there can be hunters and hunted or there cannot be any. Rainsford, who is one of the main characters, gets in a shipwreck around a mysterious island. "The Most Dangerous Game" focuses on both themes of there are hunters and the hunted, or there are no hunters and the hunted. Rainsford makes the

Always take caution in dangerous times because not everything is what it seems. The person you trust most might be the enemy. In “The Lamb to the Slaughter” by Roald Dahl, Mary Maloney becomes fazed when her husband tells her he is going to leave her and their unborn child behind. And so, Mary decides to murder him with a frozen leg of lamb. However, now Mary must deal with the repercussions and cover up the murder. But, the cops are quickly deceived by Mary’s victim act. When analyzing Mary, we

Twelfth Night is a story of loss, tragedy, and love that is masquerading as a romantic comedy of sorts a perfect example of Shakespeare’s true talents of expressing deep metaphor in very interesting ways. This is a play about the ocean deep, salty, unpredictable, rough and difficult to navigate but after enough time and understanding, you can see the beauty in the deep blue water. The salty water seems very basic and easy to understand but upon closer inspection, you can see the true depth and complexity

There are a lot more scenes showing a vanishing point. Another example is the spaceship’s entrance. Although it is a bit difficult so see, the light from the wall makes the edges of the tunnel slightly visible (Figure 36). These edges create a vanishing point in the center of the frame. The object of interest – the glowing wall – is focused. This central perspective is also used when Louise and Ian are in the decontamination chamber (Figure 40). The guiding lines are generated by the ceiling (that

Ytterbium is a rare earth metal, one of the elements found in Row 6 of the periodic table. It has an atomic number of 70, an atomic mass of 173.04, and a chemical symbol of Yb. Ytterbium is a typical metal that is both ductile and malleable. It has a melting point of 1,515°F (824°C), a boiling point of 2,600°F (1,427°C), and a density of 7.01 grams per cubic centimeter. Ytterbium is a relatively reactive element that is usually stored in sealed containers to prevent its reacting with oxygen of the

Protactinium (also known by its atomic symbol, Pa) is the 91st element on the periodic table. As you can tell by the atomic number, protactinium has 91 protons and 91 electrons. It also has 140 neutrons, and its mass is 213.03587 amu (atomic mass units). Also, Protactinium has a melting point of 2,854 degrees Fahrenheit, but its boiling point is so far unknown. Protactinium was discovered in 1917 by radiochemist Frederick Soddy with help from his partner, John Arnold Cranston, when they figured out

discovered that erbia consisted of two components (Emsley). Marignac named one ytterbia and the other kept the name erbia. He believed that ytterbia was a compound of a new element, which he named ytterbium. Other chemists experimented with ytterbium

INTRODUCTION Gadolinium is a shiny silvery white, malleable, ductile, metallic, rare earth element which is located in group 3, f-block, period 6 and classified in the series of lanthanides in the elements of periodic table and has 27 isotopes whose half-lives are known with mass numbers from 137 to 164. This element is considered a rare earth element because there is such a small amount of it, and it is not found often in its simplest form. It was discovered in 1880 by Jean Charles de Marignac where