Wednesday, December 29, 2010

Digital Camera





Sony released the Sony Mavica in August, 1981 as the first commercial electronic digital camera (digicamhistory.com, 2010).

Enhances- the digital camera allows you to view images instantly on the camera. You can also connect the camera to other devices such as a LCD project and television to view the images without having to print the images.

Obsoletes- The digital camera has replaced the need for film such as 35 mm, and 120 or 220 film in analog electronic camera along with various types of Polaroid (instant print) film (learning photography.net 2010).

Reverses- The digital camera may be replaced in the future by eye glasses and/or contact lenses, or implanted as part of our bodies.

Retrieves- We use the digital camera to preserve memories as well as visual records of history.

References:
http://www.digicamhistory.com/1980_1983.html
http://learning-photography.net/film_negatives/different-type-of-film

Thursday, December 16, 2010


From World Book to Wikipedia
Do you remember the 22 volume book set of World Book or Encyclopedia Britannica? Most students today have never looked in paper book encyclopedia because of a current technology that emerged in 2001. Wikipedia, a free online encyclopedia that anyone can add to or edit is shaping how many of our students are learning news facts and information. It has become one of the most popular online resources- statistics put Wikipedia as the eighth most-visited Internet site in the United States (Educes, 2010.)

The biggest problem or challenge that has been associated with Wikipedia is the reliability and quality of content due to the openly editable information. This was a much bigger issue when Wikipedia was first launched, but is more reliable today, depending on the subject. In a recent study by CNET News, Wikipedia was found to be just as accurate as and more up to date with current events than Encyclopedia Britannica (CNET News, 20100.

The societal need that Wikipedia meets is the ability for anyone to share their depth of knowledge and interest on any particular subject matter and for everyone to learn from each other. The greatest benefits are the up to date and always changing of information that makes it a great source for students to start with when doing research. I allow my students to use Wikipedia as one source of reference, but they must always find a second source that confirms that information.

The only thing that would make this technology better would be to develop a more sophisticated check of all information that is posted for accuracy with all viewpoints presented, leaving biases aside; however, the volunteer editors do an incredible job of monitoring the ever changing content.

References:
http://www.educause.edu?ELI/7ThingsYouShouldKnowAboutWikip/161666
http://news.cnet.com/Study-Wikipedia-as-accurate-as Britannica/2100-1038_3-5997332.html

Graphic:
http://himaarmenia.files.wordpress.com/2009/08wikipedia-logo.jpg