Timeline of materials technology BC • 29‚000–25‚000 BC – First pottery appears • 3rd millennium BC – Copper metallurgy is invented and copper is used for ornamentation • 2nd millennium BC – Bronze is used for weapons and armour • 16th century BC – The Hittites develop crude iron metallurgy • 13th century BC – Invention of steel when iron and charcoal are combined properly • 10th century BC – Glass production begins in ancient Near East • 1st millennium BC – Pewter beginning to be used in
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1856: Mathew Brady created what’s known as the first modern advertisement which was placed an ad in the New York Herald paper offering to produce "photographs‚ ambrotypes and daguerreotypes." 1880: George Eastman‚ age 24‚ sets up Eastman Dry Plate Company in Rochester‚ New York. First half-tone photograph appears in a daily newspaper‚ the New York Graphic. 1888: First Kodak camera‚ containing a 20-foot roll of paper‚ enough for 100 2.5-inch diameter circular pictures. 1889: Improved Kodak camera
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1866 Mendel’s paper is published: units of inheritance in pairs; dominance and recessiveness; equal segregation; independent assortment. These ideas are not recognized for 34 years. 1869 DNA (first called "nuclein") is identified by Friedrich Miescher as an acidic substance found in cell nuclei. The significance of DNA is not appreciated for over 70 years. 1900 Mendel’s experiments from 1866 are "rediscovered" and confirmed by three separate researchers (one Dutch‚ one German‚ one Austrian). A
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Elizabeth Kolbert wrote The Sixth Extinction as an attempt to explain and give examples of what seems to be a 6th extinction event currently happening in the modern world. We have discussed and learned about five other extinction events throughout this semester‚ and Kolbert pushes this 6th extinction event as a new rapid extinction predominantly caused by humans. One of the underlying causes of this 6th extinction event discussed in the book is the mass killing of both animals and humans. Another
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Intro. To African American Lit. 202-05 Professor McCollin October 19‚ 2012 Theme Essay The introduction to African American literature course can be broken up into time periods and styles of writing. Four very popular styles of writings include the folklore and traditions‚ slave narrative‚ rural‚ and urban living genres that bring about different depictions of African American life. In this paper‚ these four genres will be analyze with themes and dramatizations to further emphasize the point
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Extinction is the end of an organism or group of taxa. Extinctions occur when a species becomes unfit for survival in its natural habitat usually to be replaced by another‚ better-suited species. An organism becomes ill-suited for survival because its environment is changed or because its relationship to other organisms is altered as stated from Credo Reference. The moment of extinction is generally considered to be the death of the last individual of that particular species. Mass extinctions‚ however
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associated with the works of members of the Indian Diaspora‚ such as V. S. Naipaul‚ Kiran Desai‚ Jhumpa Lahiri and Salman Rushdie‚ who are of Indian descent. It is frequently referred to as Indo-Anglian literature. As a category‚ this production comes under the broader realm of postcolonial literature-the production from previously colonised countries such as India. With the arrival of the British in India and the spread of English language through education‚ was born and since its birth had been
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March 4th 1933 FDR Inauguration March 6th Bank Holiday March 9th Emergency Session of Congress. Passage of Emergency Banking Act. March 10th Economy Act sent to Congress March 12th First Fireside Chat March 13th Banks begin to reopen March 16th Farm Bill sent to congress to remedy lack of purchasing power of farmers. This includes the measures against over-production which by October result in 6 million pigs being slaughtered and the meat thrown out as waste‚ and cotton crops plowed under.
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The Blake Transmitter (1833) Francis Blake used a carbon and platinum resistance element. Electromagnetic Telegraph Carl F.Gauss and Ernst H. Weber (1834) The telegraph was the first step to making electrical signals travel from one device to another. Speaking telegraph (1844) Innocenzo Vincenzo Bartolomeo Luigi Carlo Manzetti Transmitting the vibrations of the human voice by electrical means over a telegraph wire. He has lately made improvements in his method of transmission‚ by which
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The Victorian "spirit"‚ and 4 representative poems (50 pts.) The Victorian spirit is the change from the idleness of the admiration of natural things to the movement and excitement of innovation and change itself. It has turned from the love makes the world go ’round ideal of the Romantics to a tell it like it is attitude. While the Victorian spirit moves to new explorations and energies from what was traditional - submission by women‚ dominance of men‚ and the focus on reaching an Ideal World through
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