CATEGORIES

TODAY IN HISTORY

    EDISON'S PHONOGRAPH
    November 21, 1877 - New York City, U.S.A.

    Thomas Edison announced his invention of his "talking machine" - the tin-foil cylinder recorder that preceeded the phonograph. He appears to have envisioned it as a business dictation machine. In Sep 1877, he wrote that its purpose was "to record automatically the speech of a very rapid speaker upon paper; from which he reproduces the same Speech immediately or years afterwards preserving the characteristics of the speakers voice so that persons familiar with it would at once recognize it." The indented tin foil, however, would survive only a few playings. By the first public showing of a phonograph, which took place in New York City in early Feb 1878, its practical applications had not yet been realized.

    WIRELESS TELEPHONE AT WHITE HOUSE
    November 21, 1919 - White House, U.S.A.

    President Wilson used a radio telephone set up on the south portico of the White House to direct the maneuvers of a dozen army airplanes flying over the Potomac river several miles away. His telephoned directions went direct to the flight commander in the air. The instrument was similar to those used by American aviators in France in the latter part of World War I. Col. C. C. Culver actively developed the equipment. He began the project in Aug 1910. No new invention was needed, only adaptation and adjustment of existing techniques. By Aug 1916, he was able to send a radio telegraph signal from a plane. Enlisting expert help from the telephone companies, by Oct 1917, voice messages could be send between a plane and the ground. The system was put into service for military wartime use.

MEMBER LOGIN

RANDOM QUOTES

  • All of us have a God in us
    by Earth Day, Kenya

    "...All of us have a God in us, and that God is the spirit that unites all life, everything that is on this planet. It must be this voice that is telling me to do something, and I am sure it'as the same voice that is speaking to everybody on this planet at least everybody who seems to be concerned about the fate of the world, the fate of this planet. Wangari Maathai-Noble Peace prize winner, Deputy Minister of Environment, founder Green Belt movement in Kenya...."
  • Until a man duplicates a blade of grass
    by Earth Day, Thomas Alva Edison Inventor

    "...Until a man duplicates a blade of grass, Nature can laugh at his so-called scientific knowledge. Remedies from chemicals will never stand in favorable comparison with the products of Nature, the living cell of a plant, the final result of the rays of the sun, the mother of all life...."

RANDOM FACTS

  • Harvard Medical School
    about Eyesight Myth and Fact

    Myth: Staring at a computer screen all day is harmful to the eyes. Fact: Spending the day staring at a screen can tire or strain your eyes, but it will not hurt them. Make sure lighting doesn't create a glare on your screen. When spending long periods at your keyboard, take a break now and then to rest your eyes to reduce fatigue. Also, don't forget to blink. Your eyes need to stay lubricated to feel comfortable. More vehicles
    about Stolen On New Year's

    More vehicles are stolen on New Year's Day than any other holiday throughout the year. (So does that mean thieves are having their last fling before changing their ways or are they trying for a big score to start the New Year?)

Evaluating A Roof Repair :

Choose Your Color :

ARTICLE INFORMATION :

Evaluating A Roofing Replacement:

ARTICLE CONTENT :

Having the opportunity to estimate the amount that it may cost to replace a roof is often a fragile calculation. For a roofing contractor, they often keep in mind various factors directly to ensure about whether or not a straightforward repair needs to be done, or total replacement.

Usually, a roof should last more than two decades. The longevity of the roof is usually dependent on how well it was actually maintained over the years. Climatic conditions can also be a factor.

For example, water can get underneath shingles after which become ice. This may cause leaks, plus a considerable amount of damage. When the sun is especially intense, it can cause shingles to blister.

If your roof does find yourself needing to be replaced, step one will be to have a contractor measure your entire home. They'll measure the time no matter what the roofing system by its height up to the peak. They'll determine the length of time the whole system's ridges are, and decide how much of the cover needs to be replaced.

The entire roofing structure is calculated in squares which equals 100 ft² or 10 feet times 10 feet. For instance, a 1400 ft roof would contain 14 roofing squares. While these square help contractors to figure out their pricing estimate, other reasons, like costs of tearing off the present roof, should also be calculated.

Determining the number of squares on any roof aids the homeowner after they try to figure out what their most suitable choice is in relation to replacements. However, its not all roof is strong enough to accommodate all kinds of roofing material. The weight of an asphalt shingle is considerably less when compared to a concrete tile, and to discover the roofing system may not be devised to handle the extra weight.

The total price in estimating the price of a roof replacement is usually highly depending on the amount that the roofing contractors charge per square. That is why you will need to receive at least 3 - 4 bids from reputable contractors in the community. Further, they'll have the opportunity to try your roof, discover your material preferences, and come up with a reasonable estimate of the volume of a brand new roof shall be cost.

Understand that its not all factors of a roofing replacement can be found up front. For instance, there could be a damage besides the substrate, or a pest problem. However, based upon just how much a contractor charges per square in addition to materials chosen, the homeowner can certainly estimate how much it may cost to swap out the roof.

For new info be sure to take a look at our website by going to this awesome link - cracked foundation repair. You may also visit minneapolis basement waterproofing.

ARTICLE STATISTICS :

  • 4926Article ID :
  • Vennie MihlfeldOwner :
  • Free Articles / LifetimeArticle Type
  • January 23, 2017Date Added :
  • NeverExpires :
  • 0Average User Rating :
  • 0Total User Votes :
  • 0Reviews :

RATE ARTICLE :

Please rate this link article.
You must be logged in to be able to rate an article.

USER COMMENTS :

No user reviews have yet been made or approved for this article.

You must be logged in to be able to leave a comment.