Fused quartz

In the Black Hills National Forest of South Dakota, Mount Rushmore, a large granite peak was dedicated in 1925 to be sculpted into a monument. That monument today is one of the most visited monuments in the United States. Mount Rushmore is a staple of the United States. On it, it has the faces of four of the most important Presidents of the United States. According to the Sculptor Gutzon Borglum “The purpose of the memorial is to communicate the founding, expansion, preservation, and unification…

Initially, the most striking feature of Eroded Rock, Point Lobos, a gelatin silver print by Edward Weston, is its relationship between positive and negative space. The photo’s subject is an eroded rock, whose rough, raised plateaus create a light positive space and emerge from smooth, blackened sections of the eroded rock which create the image’s negative space. These sections of eroded rock envelop the plateaus in languid serpentine lines, almost as though the plateaus are land masses cast…

During the Scottish Enlightenment, a period of increased intellectual activity in the 18th and early 19th century, individuals tended to explore multiple disciplines of study (Young, 2016). One prominent Scottish Enlightenment figure was James Hutton, living from 1726 to 1797. During his lifetime he was a lawyer, geologist, chemist, physician, farmer, and naturalist. Hutton, along with other prominent Enlightenment figures, Joseph Black and Adam Smith, founded the Oyster Club. This intellectual…

3.4. Ternary systems MgO-SF-QF (MgO-SiO2-Quartz fillers) 3.4.1. Effect of crushed quartz filler on water reduction The idea of adding crushed quartz filler to M-S-H binder is inherited from replacement of Portland cement with quartz filler to improve the rheology of cement paste [25] due to the less water absorption and smooth texture of finely ground quartz particles. Fig. 9 described water reduction effect as adding crushed quartz filler (QF) to MgO-SiO2 binary system to maintain a fixed flow…

growth, and Canada’s international trades the economy also saw drastic improvement. All of these aspects combined to make a wonderful time. This decade saw a boom in technology, providing us with many modern day essentials, including the Band-Aid, quartz…

tragic day and how much it tested our resolve. This is why this watch is a symbol of the enduring spirit that is America and what better way to show that and honor those who died but by wearing one of these men 's watches. Made of stainless steel, has quartz movement, a bracelet band with silver and gold tone. The bezel rotates and is white around a royal blue face that stands out with its American flag proudly displayed. It also has three sub dials with the minutes, seconds and hours. On the…

Introduction/Background -What is the nature of the product or technology? The nature of 3d printing is nearly any area you can think of applying it to. -What is its development history? Rapid prototyping came about in the late 1980s and early 1990s. ‘Rapid prototyping ‘paved the road for all the 3d printing companies out today. (Rapid prototyping created prototypes for a manufacturer to create a prototype of a product with plastics before executing their plans and mass producing them from…

exposed to ultra-violet light to create the product layer by layer. After the whole process is finished, the finished product is rinsed in solvent and cleaned. This method is the oldest technique in the 3D printing history. The second method is called Fused Deposition Modeling (FDM).[6] It also starts by creating a 3D model with information of each layer on a computer. This data is transferred to the printer that controls “a nozzle that extrudes heated thermoplastic” to build each layer of on…

Both 3D printers follow the Fused Deposition Modeling (FDM) process. The Printrbot 1404 is capable of printing both Acrylonitrile Butadiene Styrene (ABS) and Polylactic Acid (PLA) plastics on a heated printed bed. The Printrbot extruder is able to move on the x, y, and z axis, while…

3D Printing and the Additive Manufacturing Process Additive manufacturing (AM) is a process where an object is created by adding layer-upon-layer of material. This basic process requires the use of a computer, CAD software, the material(s) and the appropriate machine to fabricate the end result. AM has been used in many applications. At first, it was used in Rapid Prototyping (RP). Today, AM is used to create end-products used in many different applications, from aerospace, automotive and…