CATEGORIES

TODAY IN HISTORY

    DRY-CELL PATENT
    November 15, 1887 - U.S.A.

    German scientist, Dr. Carl Gassner, was issued a U.S. patent (No. 373,064), the first in the U.S. for a "dry" cell. Gassner had already patented his invention in Germany (No. 37,758) on 8 Apr 1886, and also in Austria, Belgium, England, France and Hungary in the same year. The sealed zinc shell which contained all the chemicals was also the negative electrode. Later, he improved the shelf life of the battery by adding zinc chloride to the electrolyte to reduce corrosion of the zinc shell. Gassner's battery was much like the carbon-zinc, general-purpose batteries sold today. By 1896, the National Carbide Company (later Union Carbide and Eveready) produced the first consumer dry cell battery. Two years later, the company made the first D cell.

    ALKALINE DRY-CELL PATENT
    November 15, 1960 - U.S.A.

    A U.S. patent was issued for an alkaline dry-cell to P.A. Marsal, Karl Kordesch and Lewis F. Urry who assigned it to the Union Carbide Corporation, the manufacturer of Eveready batteries (No. 2,960,558). Compared to the existing carbon-zinc dry-cells, it offered an appreciable increase in life-span and efficiency during heavy continuous drains. Its construction used an alkaline electrolyte, manganese dioxide as depolarizer, a zinc powder-gel anode, and certain additives such including mercury and electrolyte-creep inhibitors. The patent gave practical details for commercial production. The patent claimed that whereas four cells in series of the carbon-zinc type gave 4.5 volts to power a 1.25-amp bulb for 45-min to 1-hr, the new alkaline design gave good brilliance after 6 to 7 hours.

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...."
  • No Man is Above the Law
    by Theodore Roosevelt

    "..."No man is above the law and no man is below it; nor do we ask any man's permission when we require him to obey it. Obedience to the law is demanded as a right; not asked as a favor."..."

RANDOM FACTS

  • Drug Abuse
    about Facts about Drugs

    Facts about drugs can protect against drug abuse. Legal drugs, such as alcohol and tobacco, kill more people than illegal drugs. Tobacco (smoking cigarettes) kills more people than any other drug. Illegal drugs including heroin, cannabis, ecstasy and amphetamines can have unknown or dangerous ingredients. Mixing drugs, especially with alcohol, can be fatal. 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.

Advanced Video Editing Software :

Choose Your Color :

ARTICLE INFORMATION :

The article concentrates on software - especially video editing programs - that can be used to make and edit dynamic and still images by professionals and amateurs.

ARTICLE CONTENT :

Before, making movies was mainly associated with cinematography, but today due to the development of computer technology an ordinary person can edit video files in the comfort of their home and share with Web users or burn onto a DVD. A video editor is all you need to use.
A video editor is a software program enabling the user to create audio and video films. This kind of computer software programs can be used to add visual effects to dynamic or still images. Video editing software can be used both by professionals and amateurs to create documentaries, films, broadcast ads, magazine shoots, modeling and more. Even firms can make and edit video files for video presentations.

Video editing software can be used as an audio-visual aid to display information at educational establishments. When selecting a video editing program, you should pay attention to a few factors. Some video editing tools enable the user to create and edit video files. A good video editing tool is the one that is cost effective and simple and easy to use. The price and the usability factors are closely connected. In other words, a person should first consider the price of a video editing program and then the usability factor. It should be user-friendly and provide the user with customizable options.

A person should be able to easily make videos and add audio or visual effects to images or shots. You can choose images and make desirable effects. A user can also perform chroma key deploying these editing tools. Chroma key editing is when you deploy a green or blue screen behind an object while making, and you digitally supplant the background with a chosen image. Some start-of-the-art editing programs contain a video cloning option. You can clone an object using start-of-the-art video editing programs.

One can even use graphics behind an object, such as the ones deployed in television news anchoring. Other software programs convert videos from and to required video formats. In other words, an advanced video editing software tool provides professional, dynamic, state-of-the-art and customizable features.

ARTICLE STATISTICS :

  • 3525Article ID :
  • suabmission54Owner :
  • Free Articles / LifetimeArticle Type
  • June 2, 2010Date 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.