THE WORLD' FIRST VCR

We all know vedio casset recorder commonly known as VCR.The world's first practical videotape recorder was released in 1956. It was as large as a dining room table and cost a cool $50G. The Ampex VRX-1000 featured an incredibly modern-sounding model number, too.
    The VRX-1000 set off a storm when it was demonstrated on April 14, 1956 at the National Association of Radio and Television Broadcasters Convention, sending RCA and all the other VTR developers back to the drawing boards. The VRX-1000 was renamed the Mark IV and sold briskly at $50,000. Ampex dominated the broadcast VTR business for a number of years to come. The fourth person from the left in the above design team group photo is Ray Dolby, later of Dolby Laboratories fame.
    Ampex discovered that the secret to recording video on tape was to use a rotating head. This enabled them to fit 90 minutes onto a single reel, making the VTR practical for TV broadcast use. The tape ran past the head at 15 inches per second, so those reels must have been huge! They obviously hit on the right approach: Modern VHS and dv recorders still use a rotating head mechanism.

MARY HAD A LITTLE LAMB

"Mary Had a Little Lamb" is an English language nursery rhyme of nineteenth-century American origin. As a girl, Mary Sawyer (later Mrs. Mary Tyler) kept a pet lamb, which she took to school one day at the suggestion of her brother. A commotion naturally ensued. Mary recalled: "Visiting school that morning was a young man by the name of John Roulstone, a nephew of the Reverend Lemuel Capen, who was then settled in Sterling. It was the custom then for students to prepare for college with ministers, and for this purpose Mr. Roulstone was studying with his uncle. The young man was very much pleased with the incident of the lamb; and the next day he rode across the fields on horseback to the little old schoolhouse and handed me a slip of paper which had written upon it the three original stanzas of the poem..."
          There are two competing theories on the origin of this poem. One holds that Roulstone wrote the first four lines and that the final twelve lines, more moralistic and much less childlike than the first, were composed by Sarah Josepha Hale; the other is that Hale was responsible for the entire poem.
Mary Sawyer's house, located in Sterling, Massachusetts, was destroyed by arson on August 12, 2007.[4] A statue representing Mary's Little Lamb stands in the town center. The Redstone School, which was built in 1798, was purchased by Henry Ford and relocated to a churchyard on the property of Longfellow's Wayside Inn in Sudbury, Massachusetts.

JEANS

We all uses jeans. Jeans are trousers made from denim or other materials such as corduroy.Dry goods merchant Levi Strauss was selling blue jeans under the "Levi's" brand to the mining communities of California in the 1850s. One of Strauss' customers was Jacob Davis, a tailor who frequently purchased bolts of cloth from the Levi Strauss & Co. wholesale house. After one of Davis' customers kept buying cloth to reinforce torn pants, he had an idea to use copper rivets to reinforce the points of strain, such as on the pocket corners and at the top of the button fly. Davis did not have the required money to purchase a patent, so he wrote to Strauss suggesting that they both go into business together. After Strauss accepted Davis's offer, the two men received U.S. Patent 139,121, for an "Improvement in Fastening Pocket-Openings," on May 20, 1873. Jeans are very useful and convenient , especially when we participate in outdoor activities because they are hard to wear out.In 1885, jeans could be bought in the US for $1.50 (approximately $36 in 2010). Today in America, a pair of durable jeans can be purchased in the United States for about 40 dollars. Americans spent more than $14 billion on jeans in 2004 and $15 billion in 2005.