Overview of small Web applications: Yout, Inspirograph, BallDroppings and other

In this review, we traditionally provide useful services and interesting sites that can be useful to you in your work, entertain or even something to surprise. From the fresh issue, you'll learn how to download audio from YouTube, get acquainted with the most precise virtual copy spirograph and learn how to extract the beautiful music with the help of the falling balls.

How to download music from YouTube

Sometimes in the catalog of YouTube there are quite unique collection of music, which is unique not there. If you want to save the music to listen to offline, you have to find a way to first download the video to your hard drive, and then get out of it the audio track. Therefore, store the service itself in bookmarks YoutThat fly to extract tracks with the specified YouTube page and stores it in MP3 format.

How to solve problems and build schedules

Many of our readers are well familiar service Wolfram | Alpha, which is a kind of universal Reshebnik mathematics, physics, astronomy, chemistry, biology, medicine, history, geography, politics and other areas of human knowledge.

How to build hypotrochoid

Spirograph - it's a great children's toy, which gives a visual representation of how beautiful the world can be mathematical functions and graphs. Despite its apparent simplicity, it is four times been named the best educational toys of the world. If you've never tried Spirograph in fact, you can join this exciting venture with the help of the site Inspirograph. It is a virtual copy of the spirograph, quite accurately mimics the smallest details of its use.

How to create a melody using the falling balls

When you first visit the service BallDroppings only one question in mind: "What is this all about?". Then it turns out that the black box to draw a mouse obstacles, collision with which the balls emit pleasant sounds. And then you notice the bottom of the gravity of the control panel, and the real fun begins. A great example of how you can create out of nothing spectacular toy.

How to start to write on a daily basis

If you want to learn how to write, you should as often as possible to do so. Preferably every day. Daily Page It is a convenient online application for the implementation of this method. Each morning to your email address will receive a letter with a new theme, which you need to write a short essay. All recorded files will be saved in Daily Page in a private or public view.

Previous editions of this column, you'll find here.