New Developments on the WhistleSoft website:

• You can now buy our tutorials on-line, from this web site, at a significant discount, paying through PayPal ["it's fast, free and secure!"] (6 Sep 04).
  
  
• Added short reviews from Medical and Science Media for all five tutorials, Vectors, Forces, Motion, Dipoles, and Quadrupoles (6 Sep 04).
  
  
• Added extended LTSN reviews of Forces and Motion (2 Sep 04).
  
  
• Added a downloadable PowerPoint presentation (zipped) describing the magnetron section of the Motion in Electromagnetic Fields tutorial (19 Jan 03).
  
  
• Added on-line demos comparing Flash, Director, and Authorware versions of the Vector Addition Laboratory, along with a paper describing how they were made (see downloads section) (6 Feb 02).
  
  
• Added Flash 5 version of the section of Vectors that deals with vector addition. (17 Nov 01). Requires the appropriate Flash or Shockwave plug-in. The earlier Flash laboratory on this page (posted 23 Sept 01) was done in Flash 4 and had a much klutzier user interface.