The tutorial offers an indepth view of frequency and time standards. The topics covered in the tutorial include 1. Significance of Time/Frequency Standards, 2. Important Types of Time/Frequency Standards such as Cesium standard, and 3. Comparison of Time/Frequency Standards. Complete tutorial may be viewed at the website.
Tokyo scientists developed Ultra Sound Display. This device creates effect of touching object, which you see on the computer screen. This is possible by using a small pad, controlled by a computer. Static distortions created in the air make us feeling like we are touching an existing object.
Excellent website for IGCSE, GCSE and A level Business Studies, Economics and Accounting revision. It contains hundreds of interactive games which make learning exciting and interesting. Revision notes are brief and to the point. Mindmaps makes it easy to absorb the content. "One stop" website for teachers and students.