One more debut Google is about tools letting users find new ways to analyze the company's huge amount of public information.

One of the tools is able to point out the frequency of some phrase covering the period of 500 years.

The service is named the Books Ngram Viewer. It lets people look for definite phrases in the digitized books collection of the company. Beside the links to original material, the results will supply with a timeline demonstrating at what time the phrase was in use more frequently.

The tool is able to make search in the big database which includes 500 billion words contained in 5.2 million books, which were digitized by Google. The digitized books on English, French, German, Russian, Spanish, Chinese, published from 1500 to 2008 enter enormous collection.

Introducing the service, Google wants to bring into academic sphere the innovative form of quantitative analysis employing vast material. This way you can survey the trends in history, the way new ideas appeared and developed in the course of history. The researches even named this phenomenon using the word “culturomics”.

You can see when the certain phrase was actively used and what events changed the situation.

There is also new tool which divide the results you get in the search according to the difficulty level. This advanced feature is able to split the results into basic level, intermediate or advanced level. The attributes which determine the reading levels were not mentioned but the readability will be checked. The sentences will be analyzed on the number of words, words in their turn on the number of syllables and this way the complicated texts will be separated in the search from the simple ones. This distinction can be of interest to all those who are interested in more academic results, for instance. A professor of University who makes research work would want advanced level, while school teacher wants to find basic information for easy explanation of study material.