tag:blogger.com,1999:blog-13686041416210142492024-03-13T22:30:23.932-07:00DRIVEN SPINNING TOPROTOP - The SPINNING DRIVEN TOP can be moved wherever wished, continuing to rotate around its own axis. The invention belongs to a Romanian physics professor, Prof. Dr. Ioan Grosu. He received the silver medal for this invention at the Geneva Saloon of Inventions 2007. He offers generously his invention for educational purposes and at the same time is looking for sponsors from the toy industry.D R I V E N S P I N N I N G T O Phttp://www.blogger.com/profile/12979876248493699512noreply@blogger.comBlogger2125tag:blogger.com,1999:blog-1368604141621014249.post-52346393171758737152008-04-01T05:10:00.000-07:002008-04-01T10:51:29.745-07:00Prof. Dr. IOAN GROSU and ROTOP<a href="http://bp1.blogger.com/_lgl5isZ2NbA/R_Imv0lu1HI/AAAAAAAAAA4/M1mAwp7RjJE/s1600-h/Ioan+Grosu.JPG"><img id="BLOGGER_PHOTO_ID_5184248724069471346" style="DISPLAY: block; MARGIN: 0px auto 10px; CURSOR: hand; TEXT-ALIGN: center" alt="" src="http://bp1.blogger.com/_lgl5isZ2NbA/R_Imv0lu1HI/AAAAAAAAAA4/M1mAwp7RjJE/s400/Ioan+Grosu.JPG" border="0" /></a><br /><div></div><br /><div align="justify"><strong>DRIVEN SPINNING TOP - A ROMANIAN INVENTION</strong> </div><div align="justify"><br />BACKGROUND OF THE INVENTION<br />It is well known that people like the classical toys: spinning toys, gyroscopes and permanent magnets. </div><div align="justify"><br />Spinning tops are old toys. They are built from wood, metals, or plastic in different shapes, color and dimentions. Recently some of them produce a sound or/and light. Not much has been changed since beginning. Once it is put into rotation we just look at its movement. No posibility to change the movement, to interact with it. </div><div align="justify"></div><div align="justify">Gyroscopes are well known toys and devices. They fascinate how the direction is kept constant. </div><div align="justify"></div><div align="justify">Permanent magnets are used to obtain different configurations using balls, nails, ferromagnetic powder, magnetic fluids. Once the configuration is achieved nothing can happen more, no more fun.</div><div align="justify"></div><div align="justify">The idea of combining the rotation movement of a gyroscope and permanent magnets has been advanced by Prof. Dr. Ioan Grosu in Romania (Patent No. 91857 from 28 Feb.1987). A classical gyroscope is modified by using two permanent magnets on the rotation axis, coaxial with it. So the gyroscope has an angular momentum and a magnetic movement. A uniform external magnetic field generated by a coil determinates a rotation that is the Larmor precession. This device is didactic and show how the Larmor precession is obtained. Such a gyroscope stimulates the spin of the electron with angular momentum and magnetic momentum.</div>D R I V E N S P I N N I N G T O Phttp://www.blogger.com/profile/12979876248493699512noreply@blogger.com0tag:blogger.com,1999:blog-1368604141621014249.post-62922480184892874652008-04-01T01:43:00.000-07:002008-04-01T10:50:29.148-07:00DRIVEN SPINNING TOP<a href="http://bp3.blogger.com/_lgl5isZ2NbA/R_Ik_Ulu1GI/AAAAAAAAAAw/_B_sU1ZT0A8/s1600-h/ROTOP.jpg"><img id="BLOGGER_PHOTO_ID_5184246791334188130" style="DISPLAY: block; MARGIN: 0px auto 10px; CURSOR: hand; TEXT-ALIGN: center" alt="" src="http://bp3.blogger.com/_lgl5isZ2NbA/R_Ik_Ulu1GI/AAAAAAAAAAw/_B_sU1ZT0A8/s400/ROTOP.jpg" border="0" /></a><br /><div>A <strong>DRIVEN SPINNING TOP</strong> fascinates by its propriety to maintain its direction around own axis. This is because the conservation of its kinetic moment when the spinning top is not influenced by any exterior force. If one applies a force and moves the spinning top its movement can change uncontrollable.</div>D R I V E N S P I N N I N G T O Phttp://www.blogger.com/profile/12979876248493699512noreply@blogger.com0