Optical discs are no longer used as widely as they were quite recently. In fact, technology is gradually disappearing, repeating the fate of floppy disks, compact cassettes, etc. True, the new development of scientists and engineers from China and Australia will be able to bring optical discs back from oblivion if they become in demand.
A joint team of engineers and scientists from Shanghai Polytechnic University and Melbourne Institute of Technology was able to create a new recording technology that can increase the disk capacity to 700 terabytes. This is much more than any other storage medium, including hard drives and SSDs.
The purpose of this article is to introduce and possibly awake your interest in such thing as a mnemonic. Mnemonic is any learning technique that aids memory. It has the set of methods and tricks that will help you memorize a lot of information in the proper sequence. For example, 100 random words (numbers) can be memorized consecutively with an interval in 6 seconds. Some people manage to remember a few thousand digits after pi. In addition it helps to learn a foreign language. You probably ask: "Why do we need this mnemonic?” I say: you can use it as a hobby to amaze your friends, as well you could improve your memory skills, participate in various competitions and much more, it offers endless possibilities. Therefore, I would like to introduce some most popular techniques (devices) that are used around the world.