Phonograph

Between 1916 and 1949 a few other companies offered colored shellac discs, including a blue-shellacked series from Columbia during the 1930s and chocolate colored pressings from a budget label “Perfect Records” prior to the 1930s. In 1949 when RCA Victor launched their 45-RPM format they began color-coding their records based on genre calcification. They classifications are as follows: Black Vinyl – Pop Pressings (Prefix 47) Green Vinyl – Country Music (Prefix 48) Red Vinyl - “Red Seal”…

Voyager 1 Introduction Space exploration is complex. Scientists study the space in steps. Each step presents new discoveries, which make the scientists to rethink and restructure their exploration program. It is because of this that space exploration is full of historical programs, which have been in use to explore the universe up to a certain level. Each space exploration program is identified with specific equipment it used in its era. Development of these equipments uses the best available…

Beginning is a new or inexperienced time in which something starts. It is when there is a change in what is common for something new to start. Sometimes, new beginnings can be difficult because leaving what was common and normal brings the hardships of learning what is new. New beginnings are the start of something that change the way things are, bringing some difficulty, but ending with a better result than what was there before. The 1920s is a decade in which there were new beginnings…

Vinyl Record Materials Materials to used to make records have evolved and changed several times over the years. The earliest disc records from 1889-1894 were made of various materials including wax and. Rubber. Shortly after, a shellac based compound had been experiment with leading to it becoming standard. Each manufactures exact formula varied, but they typically coated records with a shellac (wax) resin Shellac The materials typically used to make for a shellacked disc where cardboard and…

According to “The Formation of Modern American Mass Culture”, ““Radio, phonograph, and silver screen all molded and mirrored” the culture around those areas and others.” The new inventions made every day life so much easier for people all around America whether it was to catch a game they were missing, hear the latest news, or…

The Industrial Revolution: A Time Period of Positive Change for American Society of the 18th-19th Century: The British Industrial Revolution is marked as a powerful time period which impacted American lifestyles to a very large extent. Its outcome resulted in technological innovations, growth in machinery, urbanization, and transportation for the society of the (1800s-early 1900s). It is almost impossible to imagine what the world would be like without the impact and effects of the Industrial…

Fitzgerald summed this idea up well in The Great Gatsby by saying, “Americans, while occasionally willing to be serfs, have always been obstinate about being peasantry” (57). Even if one didn’t have the means to have the best of everything, it was still expected of them. Myrtle was enraged when she found out her husband didn’t wear his own suit to his wedding. “He borrowed somebody’s best suit to get married in…and the man came after it one day when he was out…I gave it to him and then I lay…

blade (1895). b. Edison & Westinghouse. ~ Thomas Edison started as young telegraph operator & first invented machine for recording votes (1869) then he got resources & the world’s first modern research lab in Menlo Park , NJ (1876). He invented phonograph, incandescent lamp, dynamo for generating electric power, mimeograph machine, motion picture camera. - Introduce concept of mechanics & engineers working on a project as a team rather than as lone inventors. ~ George Westinghouse…

1.2. Cones Speaker cones vary in size and shape as well as the material they are made of. They range from original Rice and Kellog design-paper cone, through Kevlar and carbon fibre, metal (aluminium) and a variety of composites, each manufacturer employing different materials suited to providing the best efficiency and linearity. First of all they wanted to achieve manufacturing consistency since wood is not a homogenous substance and tends to vary from one form of timber to another, even…

To create and sustain long-term profitability within this industry, heavy-truck maker Paccar chose to focus on one customer group where competitive forces are weakest: individual drivers who own their trucks and contract directly with suppliers. These operators have limited clout as buyers and are less price sensitive because of their emotional ties to and economic dependence on their own trucks. For these customers, Paccar has developed such features as luxurious sleeper cabins, plush…